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Old 10-10-2006, 02:48 PM   #1
SloRice
Scooby Specialist
 
Member#: 44351
Join Date: Sep 2003
Chapter/Region: MWSOC
Location: Cincinnati, OH
Vehicle:
2004 Mitsubishi Evo
701whp 9.91@146

Default Perrin Header vs. Stock Header Test - GT35R Kit

Hey guys,
Iíve had a Perrin header on my car for a little while now and I know I definitely felt some improvement from them, but was never sure how much. So I went ahead and tested the Perrin header and the stock header this past Friday at Buschur Racing on their Mustang Dyno. I downloaded the information from the dyno, so I have WHP, WTQ, AFR and boost pressure. I was also data logging the UTEC with my laptop. I also have my own LM-1 integrated into the UTEC so all of that information is available.

Lately, Iíve seen a couple header tests with the stock turbo, but havenít seen anything with an aftermarket turbo. The stock turbo tests showed great gains with the Perrin Header and I was curious to see what it would be like with the bigger turbo. So I figured I had a great platform to work with. Mods are:

CP Pistons
ARP Head Studs
Perrin GT35R .82ar turbo kit
Perrin or Stock Header
Buschur Racing Catback
TurboXS Intercooler Core
Reverse Intake Manifold/custom intercooler pipes
Perrin Modded Injectors/Walbro/Perrin Fuel Rails
ECUTek and UTEC with speed density firmware
DTEC EBC

I did 4 pulls with each header on. I road tuned the car, so I got to a point where I didnít want to increase timing without being able to see power gains. So I figured, Iím on the dyno, letís see what happens. First two pulls with each header was my road tuned map. The second two pulls, I added in two degrees of timing to see if there were any HP changes. Nothing significant as shown in the following two charts. As for the fall off in some of the dyno pulls at about 6500RPM, the car started breaking up. But on the street itís fine. I think I was just loading the car a little too much on the dyno. But I do know I need new plugs anyways. Not like it matters, I got good data in the rest of the run.





Now on to the comparisons. First up are the runs with my original street tuned map. As you can see, the Perrin header allows the car to come up on boost quite a bit quicker. What does this meanÖ.there is a HUGE area under the curve difference up to about 4600RPM when the boost finally comes on with the stock header. As for power differences, there wasnít a whole lot of difference peak power-wise, but the entire curve was brought up with the Perrin headers. There is about a 10whp and 10wtq difference between the two, but it is through the entire RPM band when the turbo was at full boost.





Here is the data log from the UTEC for the stock header run above:

Code:
 2377, -1.0,2.8, 28, 00,   00,  12.7,  13.3,+29.5,  18.8,ECU. , 92  ,ECU.  ,3.0
 2391, +1.5,3.0, 55, 10,   00,  12.8,  13.6,+18.7,  11.8,+17.7, 93  ,375.00,3.1
 2406, +2.3,3.0,100, 20,   00,  14.8,  14.3,+18.0,  12.4,+15.9, 93  ,375.00,3.1
 2491, +2.3,3.0,101, 20,   00,  14.8,  14.0,+17.6,  13.2,+15.3, 93  ,375.00,3.1
 2487, +2.8,3.0,101, 20,   00,  14.1,  14.3,+16.7,  13.4,+14.5, 93  ,375.00,3.1
 2554, +3.2,3.1,101, 20,   00,  14.1,  14.0,+16.7,  13.8,+14.5, 93  ,375.00,3.1
 2604, +3.6,3.0,101, 20,   00,  14.1,  14.0,+16.6,  14.4,+14.2, 93  ,375.00,3.1
 2626, +3.6,3.1,101, 20,   00,  13.6,  13.6,+16.5,  14.8,+13.8, 93  ,375.00,3.2
 2645, +3.6,3.2,101, 20,   00,  13.5,  13.3,+16.2,  15.3,+14.2, 93  ,375.00,3.3
 2701, +4.0,3.2,101, 20,   00,  12.9,  13.3,+15.7,  15.8,+13.8, 93  ,375.00,3.3
 2777, +4.0,3.2,101, 20,   00,  12.7,  13.3,+15.1,  16.2,+13.8, 93  ,375.00,3.3
 2846, +4.4,3.2,101, 20,   00,  12.5,  13.3,+15.3,  16.8,+13.4, 93  ,375.00,3.4
 2906, +4.4,3.3,101, 20,   00,  12.5,  13.0,+15.7,  17.0,+13.4, 93  ,375.00,3.4
 2906, +4.9,3.2,101, 30,   00,  12.3,  13.0,+16.4,  17.5,+13.4, 93  ,375.00,3.4
 2955, +4.4,3.3,101, 30,   00,  12.4,  13.0,+17.1,  17.8,+13.0, 93  ,375.00,3.4
 3027, +4.9,3.3,101, 30,   00,  12.0,  12.7,+19.8,  18.2,+13.0, 93  ,375.00,3.3
 3121, +5.3,3.4,101, 30,   00,  11.9,  12.7,+19.7,  18.3,+13.0, 93  ,375.00,3.3
 3129, +5.3,3.3,101, 30,   00,  11.8,  12.7,+20.8,  19.2,+13.0, 93  ,375.00,3.3
 3186, +5.3,3.3,101, 30,   00,  11.6,  12.7,+20.7,  19.7,+13.0, 93  ,375.00,3.4
 3205, +5.7,3.4,101, 30,   00,  11.8,  12.7,+20.9,  20.7,+13.0, 93  ,375.00,3.4
 3313, +5.7,3.5,101, 30,   00,  11.7,  12.4,+20.8,  21.0,+13.1, 93  ,375.00,3.5
 3367, +6.1,3.4,101, 30,   00,  11.7,  12.4,+21.0,  21.9,+13.4, 93  ,375.00,3.5
 3439, +6.1,3.5,101, 30,   00,  11.6,  12.4,+20.5,  22.3,+13.6, 93  ,375.00,3.6
 3479, +6.5,3.5,101, 30,   00,  11.7,  12.4,+20.5,  23.2,+14.0, 93  ,375.00,3.5
 3516, +7.0,3.6,101, 30,   00,  11.6,  12.4,+19.7,  24.7,+14.0, 93  ,375.00,3.6
 3580, +7.4,3.8,101, 30,   00,  11.8,  12.4,+18.7,  25.2,+14.0, 93  ,375.00,3.6
 3695, +8.2,3.8,101, 30,   00,  11.8,  12.4,+14.8,  27.0,+14.0, 94  ,375.00,3.8
 3757, +9.1,3.8,101, 40,   00,  11.6,  12.2,+14.2,  30.0,+14.1, 95  ,375.00,3.9
 3835, +9.9,4.0,101, 40,   00,  11.5,  12.0,+12.9,  33.6,+14.5, 96  ,375.00,4.0
 3912,+10.7,4.0,101, 40,   00,  10.8,  rich,+13.5,  35.9,+15.6, 97  ,375.00,4.0
 4006,+11.6,4.0,101, 40,   00,  10.5,  rich,+12.8,  39.0,+16.0, 98  ,375.00,4.1
 4079,+12.4,4.1,100, 50,   00,  10.4,  rich,+12.5,  41.0,+16.0, 97  ,375.00,4.2
 4198,+13.7,4.2,100, 50,   00,  10.3,  rich,+12.6,  44.0,+15.8, 97  ,375.00,4.2
 4235,+15.4,4.4,100, 50,   00,  10.5,  rich,+12.6,  48.7,+15.6, 97  ,375.00,4.5
 4409,+17.9,4.6,100, 60,   00,  10.6,  rich,+12.7,  54.0,+15.5, 96  ,375.00,4.5
 4591,+20.0,4.6,100, 70,   00,  10.8,  rich,+13.4,  59.1,+15.7, 95  ,375.00,4.6
 4714,+21.2,4.7,100, 70,   00,  10.8,  rich,+14.1,  64.1,+16.4, 95  ,375.00,4.6
 4859,+21.2,4.8,100, 70,   00,  10.8,  rich,+14.4,  64.9,+17.4, 95  ,375.00,4.6
 5020,+21.2,4.9,100, 70,   00,  10.8,  rich,+13.8,  66.1,+19.1, 95  ,375.00,4.6
 5175,+21.2,5.0,100, 70,   00,  10.8,  rich,+13.4,  69.7,+19.1, 95  ,375.00,4.6
 5324,+21.2,4.9,100, 70,   00,  11.0,  rich,+13.8,  71.2,+19.4, 96  ,375.00,4.6
 5555,+21.2,5.0,100, 70,   00,  11.0,  rich,+14.3,  75.3,+20.2, 96  ,375.00,4.6
 5630,+21.7,5.0,100, 70,   00,  11.0,  rich,+14.7,  76.7,+20.5, 96  ,375.00,4.6
 5817,+21.7,5.0,100, 70,   00,  10.9,  rich,+15.5,  75.4,+20.7, 96  ,375.00,4.6
 5941,+21.2,5.0,100, 70,   00,  11.1,  rich,+16.1,  78.4,+20.9, 96  ,375.00,4.6
 6138,+21.2,5.0,100, 70,   00,  10.9,  rich,+18.2,  81.2,+21.7, 95  ,375.00,4.6
 6184,+21.2,5.0,100, 70,   00,  10.9,  rich,+19.5,  81.3,+22.7, 94  ,375.00,4.6
 6410,+21.2,5.0,100, 70,   00,  11.1,  rich,+23.0,  81.3,+23.3, 93  ,375.00,4.6
 6510,+20.8,5.0,100, 70,   00,  10.9,  rich,+23.9,  82.1,+24.0, 91  ,375.00,4.6
 6600,+20.8,5.0,100, 70,   00,  11.0,  rich,+24.4,  83.6,+24.6, 91  ,375.00,4.6
 6485,+21.2,5.0,100, 70,   00,  11.1,  rich,+24.8,  84.5,+24.8, 91  ,375.00,4.6
 6802,+20.8,5.0,100, 70,   01,  10.9,  rich,+25.2,  86.0,+25.3, 91  ,375.00,4.6
 7017,+21.2,5.0,100, 70,   00,  10.8,  rich,+25.6,  89.8,+25.3, 92  ,375.00,4.6
 6218,+12.0,4.1,  0, 50,   01,  49.9,  13.0,+30.9,  54.7,ECU. , 94  ,LCM.  ,3.1
 5564, +1.5,2.2,  0, 10,   00,  10.4,  15.5,+23.3,  30.3,ECU. , 94  ,ECU.  ,2.2
Here is the data log from the UTEC for the Perrin header run from above:

Code:
 2454, -3.5,2.6, 26, 00,   00,  14.0,  14.3,+31.5,  10.0,ECU. , 91  ,ECU.  ,2.9
 2422, +0.2,3.0, 64, 10,   00,  15.0,  14.3, +7.9,  11.1,ECU. , 92  ,375.00,3.1
 2568, +1.5,3.1,101, 20,   00,  16.1,  14.5,+16.5,  12.5,+15.7, 93  ,375.00,3.1
 2564, +2.3,3.1,102, 20,   00,  15.8,  14.5,+15.5,  13.3,+15.3, 93  ,375.00,3.2
 2632, +2.8,3.1,102, 20,   00,  15.8,  14.5,+15.0,  14.1,+14.9, 93  ,375.00,3.2
 2681, +3.2,3.1,102, 20,   00,  14.5,  14.3,+14.4,  14.8,+14.5, 93  ,375.00,3.3
 2736, +3.6,3.1,102, 20,   00,  14.6,  14.3,+14.3,  15.4,+14.2, 93  ,375.00,3.3
 2754, +3.6,3.2,102, 20,   00,  14.0,  14.0,+13.9,  15.7,+14.2, 93  ,375.00,3.4
 2868, +4.0,3.2,102, 20,   00,  13.7,  14.0,+13.9,  16.7,+13.8, 93  ,375.00,3.4
 2881, +4.4,3.3,102, 20,   00,  13.6,  13.6,+13.9,  17.1,+13.4, 93  ,375.00,3.4
 2986, +4.9,3.4,102, 30,   00,  13.4,  14.0,+13.7,  18.0,+13.0, 93  ,375.00,3.4
 3022, +5.3,3.4,102, 30,   00,  13.3,  13.6,+15.3,  18.8,+13.0, 93  ,375.00,3.4
 3019, +5.7,3.4,102, 30,   00,  13.0,  13.3,+16.7,  20.1,+13.0, 93  ,375.00,3.4
 3095, +5.7,3.5,102, 30,   00,  12.9,  13.0,+16.4,  20.7,+13.0, 93  ,375.00,3.5
 3223, +6.5,3.5,102, 30,   00,  12.4,  13.0,+16.5,  21.3,+13.0, 93  ,375.00,3.6
 3277, +7.0,3.6,102, 30,   00,  12.3,  12.7,+16.1,  22.7,+13.1, 93  ,375.00,3.6
 3370, +7.4,3.6,102, 30,   00,  12.3,  12.7,+16.1,  23.6,+13.4, 93  ,375.00,3.7
 3429, +7.8,3.7,102, 30,   00,  12.4,  12.7,+14.7,  24.9,+13.8, 93  ,375.00,3.8
 3494, +8.6,3.8,102, 40,   00,  12.4,  13.0,+13.9,  26.7,+14.0, 93  ,375.00,3.8
 3599, +9.5,3.8,102, 40,   00,  12.3,  12.7,+12.8,  29.7,+14.0, 94  ,375.00,3.9
 3703,+10.7,4.0,102, 40,   00,  11.9,  12.4,+12.2,  34.7,+14.0, 96  ,375.00,4.0
 3818,+12.4,4.2,102, 50,   00,  11.3,  12.2,+11.7,  38.7,+14.5, 97  ,375.00,4.1
 3916,+14.1,4.3,102, 50,   00,  11.1,  12.0,+11.6,  42.3,+15.4, 97  ,375.00,4.3
 3977,+16.2,4.3,102, 60,   00,  10.8,  rich,+11.3,  47.6,+15.3, 96  ,375.00,4.5
 4192,+19.1,4.6,102, 70,   00,  11.0,  rich,+11.1,  53.4,+15.6, 96  ,375.00,4.6
 4345,+20.8,4.7,102, 70,   00,  11.0,  rich,+12.0,  60.2,+15.5, 95  ,375.00,4.6
 4480,+21.7,4.8,102, 70,   00,  11.0,  rich,+13.1,  61.3,+15.5, 95  ,375.00,4.6
 4610,+21.2,4.8,102, 70,   00,  11.0,  rich,+13.8,  62.8,+15.8, 95  ,375.00,4.6
 4816,+20.8,4.9,102, 70,   00,  11.0,  rich,+14.5,  63.9,+16.5, 95  ,375.00,4.6
 4930,+20.8,4.9,102, 70,   00,  11.0,  rich,+14.0,  67.0,+18.5, 95  ,375.00,4.6
 5112,+20.8,4.9,102, 70,   00,  11.0,  rich,+13.7,  68.4,+19.0, 95  ,375.00,4.6
 5282,+20.8,4.9,102, 70,   00,  11.0,  rich,+13.5,  70.3,+19.1, 95  ,375.00,4.6
 5420,+21.2,5.0,102, 70,   00,  11.1,  rich,+14.1,  74.2,+20.0, 96  ,375.00,4.6
 5482,+21.2,5.0,102, 70,   00,  11.2,  rich,+14.5,  76.7,+20.3, 96  ,375.00,4.6
 5707,+21.7,5.0,102, 70,   00,  11.1,  rich,+15.1,  78.3,+20.7, 96  ,375.00,4.6
 5868,+21.7,5.0,101, 70,   00,  11.3,  rich,+16.1,  79.8,+21.3, 95  ,375.00,4.6
 6016,+21.2,5.0,102, 70,   00,  11.2,  rich,+18.2,  80.9,+21.6, 95  ,375.00,4.6
 6373,+21.2,5.0,102, 70,   00,  11.1,  rich,+19.5,  81.1,+22.6, 94  ,375.00,4.6
 6301,+21.2,5.0,102, 70,   00,  11.3,  rich,+23.3,  84.2,+23.1, 94  ,375.00,4.6
 6497,+21.2,5.0,102, 70,   00,  11.2,  rich,+23.9,  83.3,+23.7, 92  ,375.00,4.6
 6561,+21.2,5.0,102, 70,   00,  11.3,  rich,+24.6,  85.2,+24.6, 91  ,375.00,4.6
 6915,+21.7,5.0,102, 70,   00,  11.2,  rich,+34.6,  89.5,+24.3, 91  ,375.00,4.6
 6613,+21.7,5.0,102, 70,   01,  11.1,  rich,+35.6,  86.7,+19.9, 91  ,375.00,4.6
 6973,+21.7,5.0,102, 70,   00,  11.0,  rich,+25.1,  90.7,+26.1, 91  ,375.00,4.6
 7262,+21.2,5.0,102, 70,   00,  11.0,  rich,+26.1,  94.6,+25.5, 91  ,375.00,4.6
 6385,+12.8,4.4,  0, 50,   00,  79.4,  16.0,+29.2,  58.2,ECU. , 93  ,LCM.  ,3.0
 5707, +1.9,2.4,  0, 20,   00,  10.4,  15.2,+23.2,  31.6,ECU. , 94  ,ECU.  ,2.2

Next up are the comparison runs when I added two degrees of timing into the map for both headers. From the looks of the graphs and logs, the added timing slightly decreased the spool up on the stock header, but slightly increased the spool up on the Perrin header. So that did take away from the area under the curve advantage that the Perrin header had from the last test. Did it do much for power in the rest of the RPM band? Not really. The Perrin header still showed about a 10whp/10wtq increase over the stock header through the RPM band when the turbo was at full boost.



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SloRice is offline   Reply With Quote
Old 10-10-2006, 02:48 PM   #2
SloRice
Scooby Specialist
 
Member#: 44351
Join Date: Sep 2003
Chapter/Region: MWSOC
Location: Cincinnati, OH
Vehicle:
2004 Mitsubishi Evo
701whp 9.91@146

Default

Here is the data log from the UTEC for the run above with the stock header:

Code:
 2413, -3.1,2.5, 18, 00,   00,  14.2,  14.0,+31.8,   8.1,ECU. , 91  ,ECU.  ,2.6
 2456, -0.2,2.9, 49, 00,   00,  14.3,  lean,+21.0,  11.6,ECU. , 92  ,375.00,3.1
 2517, +1.9,2.9,100, 20,   00,  15.2,  14.3,+18.6,  12.6,+15.7, 93  ,375.00,3.1
 2482, +2.3,3.0,101, 20,   00,  15.3,  14.5,+17.9,  12.7,+15.7, 93  ,375.00,3.1
 2544, +2.8,3.0,101, 20,   00,  15.3,  14.3,+17.0,  13.6,+14.9, 93  ,375.00,3.1
 2590, +3.2,3.0,101, 20,   00,  14.4,  14.3,+16.9,  14.0,+14.5, 93  ,375.00,3.2
 2637, +3.2,3.0,101, 20,   00,  14.4,  14.0,+16.7,  14.3,+14.5, 93  ,375.00,3.2
 2696, +3.6,3.1,101, 20,   00,  13.7,  13.6,+16.7,  14.9,+14.2, 93  ,375.00,3.3
 2759, +3.6,3.1,101, 20,   00,  13.6,  13.6,+16.0,  15.3,+13.8, 93  ,375.00,3.3
 2789, +4.0,3.2,101, 20,   00,  13.2,  13.6,+15.1,  15.9,+13.8, 93  ,375.00,3.3
 2812, +4.0,3.2,101, 20,   00,  13.0,  13.3,+15.5,  16.4,+13.4, 93  ,375.00,3.3
 2901, +4.4,3.2,101, 20,   00,  12.8,  13.3,+15.8,  16.9,+13.4, 93  ,375.00,3.4
 2911, +4.4,3.3,101, 30,   00,  12.9,  13.3,+15.9,  17.1,+13.0, 93  ,375.00,3.4
 2984, +4.9,3.4,101, 30,   00,  12.8,  13.3,+18.2,  17.7,+13.0, 93  ,375.00,3.3
 3049, +4.9,3.3,101, 30,   00,  12.3,  13.0,+19.5,  18.4,+13.0, 93  ,375.00,3.3
 3141, +5.3,3.4,102, 30,   00,  12.4,  13.0,+20.2,  19.1,+13.0, 93  ,375.00,3.3
 3165, +5.3,3.3,101, 30,   00,  12.2,  12.7,+21.1,  19.1,+13.0, 93  ,375.00,3.4
 3214, +5.7,3.4,101, 30,   00,  12.2,  13.0,+21.1,  20.3,+13.0, 93  ,375.00,3.4
 3274, +5.7,3.4,101, 30,   00,  12.1,  13.0,+20.3,  20.7,+13.1, 93  ,375.00,3.5
 3340, +6.1,3.4,101, 30,   00,  12.0,  12.7,+20.3,  21.4,+13.4, 93  ,375.00,3.5
 3367, +6.5,3.5,101, 30,   00,  11.9,  12.7,+19.7,  22.3,+13.5, 93  ,375.00,3.6
 3450, +6.5,3.6,101, 30,   00,  11.9,  12.7,+20.3,  23.4,+13.8, 93  ,375.00,3.6
 3538, +7.4,3.6,101, 30,   00,  11.9,  12.4,+19.6,  23.9,+14.0, 93  ,375.00,3.7
 3611, +7.8,3.7,101, 30,   00,  12.1,  12.7,+18.6,  26.0,+14.0, 93  ,375.00,3.8
 3783, +8.6,3.9,101, 40,   00,  12.2,  12.7,+13.5,  27.7,+14.0, 94  ,375.00,3.9
 3822, +9.5,3.9,101, 40,   00,  12.1,  12.7,+13.0,  30.9,+14.2, 95  ,375.00,4.0
 3840,+10.3,4.0,101, 40,   00,  11.6,  12.0,+13.3,  33.9,+14.7, 96  ,375.00,4.0
 3885,+11.6,4.0,100, 50,   00,  11.0,  rich,+12.5,  37.7,+15.6, 98  ,375.00,4.0
 4055,+12.8,4.1,100, 50,   00,  10.7,  rich,+12.0,  40.6,+15.8, 97  ,375.00,4.1
 4151,+14.5,4.1,100, 50,   00,  10.5,  rich,+12.4,  45.0,+15.6, 97  ,375.00,4.3
 4268,+16.6,4.4,100, 60,   00,  10.5,  rich,+12.6,  48.9,+15.5, 96  ,375.00,4.5
 4403,+19.1,4.6,100, 60,   00,  10.7,  rich,+12.4,  55.5,+15.5, 95  ,375.00,4.6
 4597,+20.8,4.7,100, 70,   00,  10.9,  rich,+13.2,  58.9,+15.8, 95  ,375.00,4.6
 4761,+20.8,4.7,100, 70,   00,  10.9,  rich,+14.0,  61.7,+16.2, 95  ,375.00,4.6
 4823,+20.8,4.7,100, 70,   00,  10.9,  rich,+14.4,  64.0,+17.4, 95  ,375.00,4.6
 4990,+21.2,4.9,100, 70,   00,  10.9,  rich,+13.9,  64.7,+19.0, 95  ,375.00,4.6
 5200,+20.8,5.0,100, 70,   00,  10.9,  rich,+13.6,  67.9,+19.0, 95  ,375.00,4.6
 5324,+21.2,4.9,100, 70,   00,  11.0,  rich,+13.6,  69.8,+19.3, 95  ,375.00,4.6
 5527,+21.2,4.9,100, 70,   00,  10.9,  rich,+14.5,  73.5,+20.1, 96  ,375.00,4.6
 5500,+21.2,5.0,100, 70,   00,  11.0,  rich,+14.5,  75.1,+20.4, 96  ,375.00,4.6
 5827,+21.7,5.0,100, 70,   00,  11.1,  rich,+15.1,  77.5,+20.8, 96  ,375.00,4.6
 5952,+21.2,5.0,100, 70,   00,  11.1,  rich,+15.9,  77.0,+20.8, 96  ,375.00,4.6
 6195,+21.2,5.0,100, 70,   00,  11.0,  rich,+16.6,  81.7,+22.7, 95  ,375.00,4.6
 6150,+21.2,5.0,100, 70,   00,  11.0,  rich,+18.4,  79.8,+22.6, 94  ,375.00,4.6
 6349,+20.8,5.0,100, 70,   00,  11.2,  rich,+21.4,  81.4,+22.8, 93  ,375.00,4.6
 6472,+20.8,5.0,100, 70,   00,  11.1,  rich,+22.1,  81.1,+23.6, 92  ,375.00,4.6
 6548,+21.2,5.0,100, 70,   00,  11.2,  rich,+22.8,  83.2,+24.7, 92  ,375.00,4.6
 6761,+21.2,5.0,100, 70,   00,  11.1,  rich,+23.0,  87.5,+25.8, 91  ,375.00,4.6
 7122,+21.7,5.0,100, 70,   01,  11.0,  rich,+23.7,  86.1,+25.7, 91  ,375.00,4.6
 7017,+21.2,5.0,100, 70,   01,  11.0,  rich,+24.0,  87.3,+26.0, 92  ,375.00,4.6
 6373,+23.3,5.0, 70, 80,   00,  11.0,  rich,+23.4,  85.8,ECU. , 91  ,LCM.  ,4.6
 6472, +7.4,3.1,  0, 30,   00,  10.4,  14.9,+22.9,  45.9,ECU. , 91  ,ECU.  ,2.4
Here is the data log from the UTEC for the run above with the Perrin header:

Code:
 2431, -0.6,3.0, 40, 00,   00,  14.0,  14.3,+20.0,  11.9,ECU. , 92  ,375.00,3.1
 2429, +1.1,3.0, 84, 20,   00,  16.0,  14.5,+16.7,  12.1,+16.9, 93  ,375.00,3.1
 2485, +2.3,3.1,100, 20,   00,  16.4,  14.5,+16.6,  12.8,+15.3, 93  ,375.00,3.2
 2517, +2.3,3.1,101, 20,   00,  16.1,  14.5,+15.6,  13.2,+15.3, 93  ,375.00,3.2
 2606, +3.2,3.1,101, 20,   00,  15.2,  14.3,+15.5,  14.0,+14.9, 93  ,375.00,3.2
 2630, +3.2,3.1,101, 20,   00,  14.8,  14.3,+14.6,  14.1,+14.5, 93  ,375.00,3.3
 2727, +3.2,3.1,101, 20,   00,  14.3,  14.3,+14.5,  15.3,+14.2, 93  ,375.00,3.3
 2718, +3.6,3.2,101, 20,   00,  13.9,  14.0,+13.5,  15.6,+14.2, 93  ,375.00,3.3
 2812, +4.0,3.2,101, 20,   00,  13.6,  14.0,+13.5,  16.4,+13.8, 93  ,375.00,3.4
 2881, +4.4,3.3,101, 20,   00,  13.4,  14.0,+13.5,  16.9,+13.4, 93  ,375.00,3.4
 2903, +4.4,3.3,101, 30,   00,  13.4,  14.0,+13.5,  17.2,+13.4, 93  ,375.00,3.5
 2981, +4.9,3.4,100, 30,   00,  13.3,  13.3,+13.9,  18.1,+13.0, 93  ,375.00,3.3
 3030, +5.3,3.4,100, 30,   00,  13.1,  13.3,+16.5,  18.8,+13.0, 93  ,375.00,3.4
 3072, +5.3,3.5,101, 30,   00,  12.8,  13.3,+17.4,  19.3,+13.0, 93  ,375.00,3.4
 3135, +5.7,3.5,101, 30,   00,  12.6,  13.0,+17.4,  20.3,+13.0, 93  ,375.00,3.5
 3233, +6.1,3.5,101, 30,   00,  12.5,  13.0,+16.7,  21.0,+13.0, 93  ,375.00,3.5
 3316, +6.1,3.6,100, 30,   00,  12.5,  13.0,+16.6,  21.6,+13.1, 93  ,375.00,3.6
 3340, +7.0,3.6,100, 30,   00,  12.4,  13.0,+16.2,  23.4,+13.5, 93  ,375.00,3.6
 3432, +7.4,3.7,100, 30,   00,  12.3,  13.0,+16.4,  24.3,+13.7, 93  ,375.00,3.7
 3501, +7.8,3.8,100, 30,   00,  12.5,  13.0,+14.1,  25.4,+14.0, 93  ,375.00,3.8
 3576, +8.6,3.8,100, 40,   00,  12.7,  13.3,+13.5,  27.7,+14.0, 94  ,375.00,3.8
 3691, +9.9,4.0,100, 40,   00,  12.5,  13.0,+12.7,  31.1,+14.0, 95  ,375.00,4.0
 3809,+11.2,4.0,100, 40,   00,  11.6,  12.4,+12.0,  36.4,+14.6, 96  ,375.00,4.0
 3912,+12.4,4.2,100, 50,   00,  11.2,  12.0,+11.7,  39.4,+15.0, 97  ,375.00,4.1
 3992,+14.1,4.2,100, 50,   00,  11.0,  rich,+11.8,  44.2,+15.2, 97  ,375.00,4.3
 4125,+16.6,4.5,100, 60,   00,  10.9,  rich,+11.7,  49.1,+15.3, 96  ,375.00,4.5
 4273,+19.6,4.6,100, 70,   00,  11.1,  rich,+11.6,  54.5,+15.5, 96  ,375.00,4.6
 4420,+21.2,4.8,100, 70,   00,  11.2,  rich,+12.2,  59.8,+15.5, 95  ,375.00,4.6
 4553,+21.2,4.8,100, 70,   00,  11.0,  rich,+13.3,  62.7,+15.7, 95  ,375.00,4.6
 4728,+21.2,4.8,100, 70,   00,  11.1,  rich,+14.2,  64.0,+16.3, 95  ,375.00,4.6
 4852,+21.2,4.8,100, 70,   00,  11.1,  rich,+14.3,  64.7,+17.8, 95  ,375.00,4.6
 5005,+21.2,4.9,100, 70,   00,  11.1,  rich,+13.9,  68.4,+19.0, 95  ,375.00,4.6
 5274,+20.8,4.9,100, 70,   00,  11.1,  rich,+13.5,  70.2,+19.0, 95  ,375.00,4.6
 5428,+20.8,5.0,100, 70,   00,  11.1,  rich,+14.0,  71.5,+19.7, 96  ,375.00,4.6
 5420,+21.2,5.0,100, 70,   00,  11.1,  rich,+14.3,  75.7,+20.2, 96  ,375.00,4.6
 5688,+21.2,5.0,100, 70,   00,  11.1,  rich,+14.8,  77.0,+20.4, 96  ,375.00,4.6
 5807,+21.2,5.0,100, 70,   00,  11.1,  rich,+15.6,  79.1,+20.8, 96  ,375.00,4.6
 5910,+21.2,5.0,100, 70,   00,  11.2,  rich,+16.7,  80.3,+21.7, 96  ,375.00,4.6
 6289,+21.7,5.0,100, 70,   00,  11.4,  rich,+19.1,  81.0,+22.2, 95  ,375.00,4.6
 6373,+21.7,5.0,100, 70,   00,  11.3,  rich,+20.6,  82.3,+23.1, 94  ,375.00,4.6
 6497,+21.2,5.0,100, 70,   00,  11.3,  rich,+23.5,  83.3,+23.7, 92  ,375.00,4.6
 6626,+21.2,5.0,101, 70,   00,  11.4,  rich,+24.1,  84.1,+24.2, 91  ,375.00,4.6
 6587,+21.2,5.0,101, 70,   00,  11.4,  rich,+24.5,  84.3,+24.6, 91  ,375.00,4.6
 6915,+21.7,5.0,101, 70,   01,  11.3,  rich,+25.0,  86.7,+25.1, 96  ,375.00,4.6
 7062,+21.2,5.0,100, 70,   01,  11.1,  rich,+25.6,  87.4,+26.0, 91  ,375.00,4.6
 6915,+21.2,5.0,100, 70,   00,  11.1,  rich,+25.9,  90.4,+25.6, 91  ,375.00,4.6
 6640,+19.1,4.9,  0, 70,   00,  16.0,  12.4,+24.8,  73.8,ECU. , 93  ,LCM.  ,3.8
 5910, +4.0,2.3,  0, 20,   00,  10.4,  16.8,+23.5,  36.1,ECU. , 92  ,LCM.  ,2.1
Now on to the butt dyno. The Perrin header made a huge difference in my opinion. I had been running around on the Perrin header for about a month and I was just amazed at the drivability and how responsive the Perrin header made the car. I honestly felt like I had my old 30R on the car with how quickly it came into boost, but the top end was crazy compared to the 30R. We ran the runs on the dyno, then put the stock header on the car and I immediately felt the loss in power and spool up. From the sound of it, it almost sounded like the car was choking on the stock header just because it didn’t have the air flow in the mid-range to spool up the turbo.

I have been getting a lot of PM’s lately from people asking me how I felt about going from the 30R to the 35R and whether I regretted it or not. I can honestly say with the Perrin headers on the car, I don’t regret it one bit. I mean seriously….I’m making 20psi by 4200RPM!!! With the short gears and how quickly it comes back on boost with the Perrin headers after a shift, it doesn’t even feel like a big turbo car. Definitely worth the money if you want a big HP car but don’t want the lag associated with it.
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Old 10-10-2006, 02:59 PM   #3
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Wow, great comparison. Thanks for taking the time to do all that work.

I'm amazed how much faster the spool is with the header. 500 RPM! Yikes!
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Old 10-10-2006, 03:05 PM   #4
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Do you think if you tuned out that rich spike w/ the stock headers that you might recover some of that lost spoolup? Either way, great results.
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Old 10-10-2006, 03:31 PM   #5
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Nice results, thanks for posting. Guess I'll be eating raman noodles for a while so I can pick up this header.

How were your EGT's affected?
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Old 10-10-2006, 03:50 PM   #6
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Dear Tim,

I <3 U.

Love,
-Tony



You just quantified what my butt-dyno was telling me. My car certainly felt quite a bit peppier around town with the header.
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Old 10-10-2006, 03:55 PM   #7
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^^this information will cost you two friction disks, please pay up asap.
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Old 10-10-2006, 04:02 PM   #8
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Quote:
Originally Posted by remowgn View Post
Do you think if you tuned out that rich spike w/ the stock headers that you might recover some of that lost spoolup? Either way, great results.
I really doubt half an AFR point would bring back 500RPM of spool.

Quote:
Originally Posted by jays05 View Post
Nice results, thanks for posting. Guess I'll be eating raman noodles for a while so I can pick up this header.

How were your EGT's affected?
I'm really not sure. I don't have an EGT probe in the Perrin headers. But I have one in the stock headers and it peaked out at 800*C. Yes, I know it's a little rich, but it runs safe for a road tune and I know I'm not going to pop it!
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Old 10-10-2006, 04:25 PM   #9
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Good job!
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Old 10-10-2006, 04:33 PM   #10
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Nice information to have.
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Old 10-10-2006, 05:01 PM   #11
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Do you still have the bxr rumble with the headers?
Or is that something that you give up for performance?
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Old 10-10-2006, 05:16 PM   #12
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Shocking really... Is this header an equal length unit? I tested GT spec against stock on my car and had the exact oposite effect.. The GT spec header lost at least 500 rpm of midrange power. It was a noticable loss. Maybe I need to try this one. This is with the GT35R with Ported shroud right?

When are you going to ditch that T31 Housing?

Clark
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Old 10-10-2006, 05:16 PM   #13
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Quote:
Originally Posted by ol'skoolwrx View Post
Do you still have the bxr rumble with the headers?
Or is that something that you give up for performance?
This one time I was chilling at the shop when a fart canned honda pulled up right behind me, I turned around and was horrified to find out it was an STI. I have never heard THIS header but the one on that STI was an equal length header. I could never do that to my car just for a few HP.
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Old 10-10-2006, 05:20 PM   #14
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Thanks for taking the time to do this, nice read.
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Old 10-10-2006, 05:24 PM   #15
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Quote:
Originally Posted by ol'skoolwrx View Post
Do you still have the bxr rumble with the headers?
Or is that something that you give up for performance?
No boxer rumble anymore. It's an equal length header.

Quote:
Originally Posted by AZScoobie View Post
Shocking really... Is this header an equal length unit? I tested GT spec against stock on my car and had the exact oposite effect.. The GT spec header lost at least 500 rpm of midrange power. It was a noticable loss. Maybe I need to try this one. This is with the GT35R with Ported shroud right?

When are you going to ditch that T31 Housing?

Clark
Yes, this is a ported shroud GT35R.

Probably won't ditch the T31 till I get bored with 500whp. But then I'm ditching the entire turbo.

Quote:
Originally Posted by AgileJunkie View Post
This one time I was chilling at the shop when a fart canned honda pulled up right behind me, I turned around and was horrified to find out it was an STI. I have never heard THIS header but the one on that STI was an equal length header. I could never do that to my car just for a few HP.
I unfortunately feel your pain with this header. It does sound like a Honda. But I kinda got used to it and damn does it sound pissed off with 30psi going through it!!
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Old 10-10-2006, 05:56 PM   #16
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Tim. I am only seeing 375 ish whp I am going to have to grab a Perrin header and try it on my car. These results are fantastic.

Clark
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Old 10-10-2006, 08:30 PM   #17
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seriously thanx for taking the time and effort to put all this together!

was the header wrapped an/or coated??
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Old 10-10-2006, 08:34 PM   #18
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And to think that you did this for fun and the damn manufacturer of this header can't do it. Nice results!
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Old 10-10-2006, 08:41 PM   #19
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I really didn't notice much of a difference in sound when I put my equal length headers on. I was actually disappointed that it didn't change the sound more. I'm one of the rare few that hates the subaru rumble. I got the Synic headers and saw similar results to yours in my logs although on a different scale since I have a 2.0 Sti motor and smaller turbo.
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Old 10-10-2006, 09:04 PM   #20
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wow very nice gains in the mid range....is the perrin unit wrapped coated etc?

i wonder how it would compare to a ported stock mani?
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Old 10-10-2006, 09:27 PM   #21
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I wish my damn Perrin headers would of fit.
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Old 10-10-2006, 10:06 PM   #22
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Thanks for doing the big turbo Header comparo. They dont show as much gains as the Stage 2 results did with the header, but its still a great gain and it is well documented.

We tested out Perrin headers in the stage 2 comparo with the headers uncoated and unwrapped. I certainly coated *and* wrapped my headers, and it took care of the first run going to warming up the header. I didnt read above that you had wrapped or coated the headers. Am I wrong in assuming that is true?

Yeha, it sounds like a Honda (or any inline 4)... but don't you agree that it is significantly *quieter*? I sure think the header quiets down the car alot.... which is a MAJOR benny for me.
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Old 10-10-2006, 10:11 PM   #23
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Thanks for the contribution! It's not that often that there is any kind of data over a stage 2 (just like you stated).
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Old 10-10-2006, 11:31 PM   #24
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my experience with the perrin el header vs stock exhaust manifold yeilded diff results. After hours of tuning, my perrin headers (uncoated/non-wrapped) spooled 500rpms slower, and only made 6whp more at 6500rpms. Immediately replaced the perrin el headers with stock and gained 500rpms of spool across the entire rpm band. I also have a gt35r, and was upset they did not make much more power over stock, especially for the price.

I will admit the throttle response was much better with perrin headers, and the sound wasnt bad. I didnt think the el headers sounded like a honda, retained a little boxer rumble. I ended up going back to stock, doubt I'll give any other header a chance in the future.
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Old 10-10-2006, 11:38 PM   #25
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do you have your average values?...they are standard with the printouts on mustangs...I really am interested in the gains for the area under the curve
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