Welcome to the North American Subaru Impreza Owners Club Tuesday March 19, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 11-15-2005, 02:02 PM   #1
xcntrk75
Scooby Specialist
 
Member#: 60224
Join Date: Apr 2004
Chapter/Region: MAIC
Location: NOVA
Wink Another: help analyze my logs thread (UTEC)

So I’ve just finished dialing in a new setup and could use some opinions with my UTEC log results. It’s taken several weeks to get the tune, standalone boost control, and waste-gate settings all dialed in, and I’m finally virtually knock free with a stable configuration of both Pump and Alcohol injection MAP’s:

USDM EJ20
Ported VF22
Modded Injectors/Walbro pump
UTEC 5.0
AVC-R
SMC Alky Kit
All other supporting mods

Alky Injection log, 3rd gear pull to redline:
Code:
     	     	   	   	Load	Knock	    	      	      	 Mod	  Mod 	     	 Mod	    
  RPM	 MAP 	MAF	TPS	Site	Count	 AFR	 Ign#1	 Inj#1	 Ign	  Fuel	Boost	 MAF	  WB
     	 psia	 V 	 % 	    	     	    	 deg  	 duty 	 deg	   %  	(CL) 	   V	 AFR
2463	-12.8	1.4	0	0	0	24.5	11.8	3.5	ECU. 	-1.5	ECU.  	1.2	
2449	-12.8	1.4	0	0	0	24.2	11.9	23.8	ECU. 	-1.5	ECU.  	1.4	
2443	-12.4	1.9	3	0	0	24.2	22.8	38.7	ECU. 	-1.5	ECU.  	1.9	
2452	-10.8	2.5	13	0	0	14.1	39.5	8.7	ECU. 	-1.5	ECU.  	2.2	
2534	-8.3	2.6	28	0	0	  rich	35.3	9.8	ECU. 	-1.5	ECU.  	2.3	
2575	-5.3	2.7	84	10	0	14	35.2	10	30.6	-8.3	310	2.3	
2651	-2.4	2.7	98	10	0	14.4	34.9	10.8	30.4	-8.7	325	2.2	
2710	-0.4	2.8	98	10	0	13.7	34.2	11.6	29	-9.2	325	2.3	
2780	0.6	2.8	98	10	0	13	33.8	12.6	27.9	-9.4	325	2.3	
2817	1.3	2.8	97	20	0	12	33.2	12.9	26.5	-10.2	325	2.4	
2876	2.1	2.9	97	20	0	  rich	33	13.4	25.3	-10.8	325	2.4	
2962	2.9	3.1	98	20	0	12.1	32.8	14.4	23.3	-11.2	325	2.5	
3035	3.7	3.1	98	30	0	  rich	32.6	15.7	21.6	-12.3	325	2.5	
3086	4.7	3.2	98	30	0	  rich	32.5	16.4	20.3	-12.7	325	2.6	
3205	5.7	3.3	98	40	0	  rich	32.3	17.5	18.5	-13.5	325	2.6	
3245	6.8	3.4	97	50	0	  rich	32.2	21	16.9	-12.4	325	2.7	
3370	8	3.5	97	50	0	  rich	31.9	22.2	16.4	-13.2	325	2.7	
3447	9.4	3.5	97	60	0	  rich	31.6	23.4	15.5	-14.6	325	2.9	
3534	11	3.7	97	70	0	  rich	31.2	27.3	15	-15.2	325	2.9	
3646	12.7	3.9	97	80	0	  rich	30.4	30.2	15	-15.8	325	3	
3741	14.9	4	96	90	0	  rich	28.8	36.1	15.2	-14.7	325	2.9	
3822	17	4.1	97	100	0	  rich	28.5	37.1	15.7	-15	325	3	
3926	18.4	4	96	100	0	  rich	28.4	36.6	17	-14.6	325	3.2	
4100	19.4	3.9	96	100	0	  rich	27	38.5	17	-13.6	325	3.2	
4257	20	4.1	96	100	0	  rich	23.3	40.9	17	-13.3	325	3.1	
4374	20	4.1	94	100	0	  rich	21.8	43	17	-13.3	325	3.3	
4462	20.6	4.2	95	100	0	  rich	21.2	44.7	17.2	-14.6	325	3.2	
4591	21	4.2	95	100	0	  rich	20.8	47.3	17.8	-13.9	325	3.3	
4748	21.2	4.2	95	100	0	  rich	22.1	47	18.6	-15.6	325	3.3	
4796	21.2	4.3	95	100	0	  rich	21.8	48.2	19.3	-14.9	325	3.3	
4952	21	4.3	95	100	0	  rich	24.7	50.6	19.8	-15.6	325	3.3	
5104	21	4.4	96	100	0	  rich	27.1	49.8	20.3	-15.8	325	3.4	
5257	21	4.4	95	100	0	  rich	29.5	51.7	20.8	-15.9	325	3.4	
5307	20.8	4.4	95	100	0	  rich	29.5	53.3	21	-15.9	325	3.4	
5491	21	4.4	96	100	0	  rich	29.4	52.5	21	-15.8	325	3.4	
5602	20.4	4.4	95	100	0	  rich	29.4	57.3	21	-15.6	325	3.4	
5717	20.2	4.5	95	100	0	  rich	29.4	58.8	21	-15.1	325	3.5	
5797	20.2	4.5	96	100	0	  rich	30.5	56.8	21	-14.9	325	3.5	
5963	20	4.4	95	100	0	  rich	31.2	60	21	-14.7	325	3.5	
6161	20	4.5	95	100	0	  rich	31.5	60.2	21.3	-14.6	325	3.5	
6172	19.8	4.5	95	100	0	  rich	32.2	60.5	21.5	-14.7	325	3.5	
6207	19.8	4.5	95	100	0	  rich	35.5	61.2	21.9	-14.9	325	3.5	
6349	19.2	4.5	96	100	0	  rich	37	61.3	22	-14.9	325	3.5	
6561	18.8	4.5	96	100	0	  rich	38.3	63.3	22	-15.1	325	3.5	
6626	19	4.5	96	100	0	  rich	38.7	61.2	22	-15.2	325	3.6	
6626	19	4.5	95	100	0	  rich	38.9	60.5	22	-15.2	325	3.5	
6747	19.4	4.6	96	100	0	  rich	39.3	61.5	22	-15.2	325	3.5	
6548	18.8	4.5	7	100	0	  rich	10.8	14.2	ECU. 	-15.2	LCM.  	2.8	
6230	12.1	1.8	0	30	0	15.4	11.1	5.8	ECU. 	-15.2	LCM.  	1.4	
5807	4.5	2	0	10	0	  lean	11	6.4	ECU. 	-16.4	LCM.  	1.6	
5420	-3	2.1	0	10	0	  lean	11.2	6.1	ECU. 	-17	LCM.  	1.5	
4997	-10.2	2	0	10	0	24.5	10.8	6	ECU. 	-17	ECU.  	1.6	
4675	-11	2.1	0	0	0	24.5	11.1	34.2	ECU. 	-1	ECU.  	1.9
Pump gas log, 3rd gear pull to redline:
Code:
     	     	   	   	Load	Knock	    	      	      	 Mod	  Mod 	     	 Mod	    
  RPM	 MAP 	MAF	TPS	Site	Count	 AFR	 Ign#1	 Inj#1	 Ign	  Fuel	Boost	 MAF	  WB
     	 psia	 V 	 % 	    	     	    	 deg  	 duty 	 deg	   %  	(CL) 	   V	 AFR
2387	-12	1.6	0	0	0	24.5	25.6	4.9	ECU. 	-0.8	ECU.  	1.5	
2406	-11.6	1.7	1	0	0	17.5	25.6	3	ECU. 	-0.8	ECU.  	1.6	
2510	-11	2.2	8	0	0	13.1	35.9	8.2	ECU. 	-0.8	ECU.  	2.1	
2506	-9.1	2.6	23	0	0	14.1	24	19.2	ECU. 	-0.3	ECU.  	2.4	
2510	-6.3	2.6	78	10	0	14.3	35.9	10	31	-8.7	295	2.2	
2564	-3.6	2.7	97	10	0	14.7	35.9	9.9	30.9	-9	325	2.2	
2587	-1	2.7	97	10	0	15	35.6	10.6	30	-9.3	325	2.2	
2630	0.4	2.8	98	10	0	14.3	34.8	11.8	29	-9.5	325	2.3	
2668	0.8	2.9	98	10	0	14.2	34.1	12.2	28.2	-10	325	2.3	
2759	1.7	2.9	97	20	0	13.8	33.7	12.4	26.5	-11.4	325	2.3	
2815	2.1	2.8	97	20	0	14.3	33.2	13.2	25	-11.3	325	2.4	
2903	3.1	3	98	20	0	13.9	33	14.6	23.6	-11.1	325	2.5	
2952	3.9	3.1	97	30	0	12.4	32.8	16	21.9	-11	325	2.5	
3008	4.7	3.1	97	30	0	12.1	32.6	17.5	20.1	-11.1	325	2.6	
3124	5.7	3.3	97	40	0	  rich	32.4	18.1	18.9	-12.6	325	2.7	
3208	6.8	3.3	97	40	0	12.2	32	20	17.4	-13.4	325	2.7	
3271	8	3.5	97	50	0	  rich	31.6	22.6	16.4	-12.5	325	2.7	
3380	9	3.6	97	60	0	  rich	30.9	24.1	15.7	-13.2	325	2.9	
3486	10.6	3.6	97	70	0	  rich	30.9	26.6	14.9	-13.9	325	2.8	
3611	12.1	3.8	97	80	0	  rich	30.9	29.3	14	-14.2	325	3	
3711	13.5	3.9	97	80	0	  rich	30.5	31.3	14	-14.3	325	2.9	
3844	14.9	3.9	96	90	0	  rich	29.5	31.7	14.3	-14.3	325	2.8	
3944	16.1	3.8	95	90	0	  rich	29.6	36.5	14.6	-14.4	325	3	
4074	17	3.8	96	100	0	  rich	29.4	34.5	15	-14.2	325	3	
4135	17.4	3.8	96	90	0	  rich	29.2	35.1	15.2	-14	325	3.2	
4262	17.8	4	97	100	0	  rich	27.3	38.9	15	-13.2	325	3.2	
4420	17.8	4	96	100	0	  rich	25.5	41	15	-13.2	325	3.2	
4559	18	4.1	96	100	0	  rich	25.7	43.8	15.1	-13.3	325	3.2	
4623	18.4	4.1	95	100	0	  rich	25.1	42.4	16.3	-14.2	325	3.2	
4701	18.6	4.2	95	100	0	  rich	25.4	46.4	16.8	-14.7	325	3.2	
4866	18.6	4.1	95	100	0	  rich	26.7	44.8	17.6	-15	325	3.2	
5167	18.4	4.2	95	90	0	  rich	28.2	47.8	18	-15.9	325	3.2	
5104	18.2	4.3	96	100	0	  rich	28.6	47.5	18	-16	325	3.3	
5200	18	4.3	96	100	0	  rich	30.5	48.3	18	-16.1	325	3.3	
5341	18.2	4.4	96	100	0	  rich	30.8	49.5	18	-16.1	325	3.3	
5367	18.8	4.3	96	100	0	  rich	31.3	50.4	18	-16.1	325	3.4	
5546	19	4.4	95	100	0	  rich	31.1	52.9	18.4	-15.8	325	3.4	
5611	19.2	4.4	97	100	0	  rich	31.8	55.3	18.9	-15.8	325	3.4	
5757	19.2	4.4	95	100	0	  rich	31.7	55.2	19	-15.6	325	3.4	
5868	18.2	4.5	96	90	0	  rich	32.6	56.8	19	-15.4	325	3.4	
6038	18.2	4.5	95	100	0	  rich	33.1	58.2	19	-15.4	325	3.5	
6127	17.6	4.5	96	100	0	  rich	33.3	57.7	19	-15.3	325	3.5	
6337	17	4.5	96	90	0	  rich	34.8	57.3	19	-15.8	325	3.5	
6337	17.2	4.5	96	90	0	  rich	38.7	58.4	19.6	-15.6	325	3.5	
6472	16.8	4.5	96	90	0	  rich	38.7	56.1	19.5	-15.8	325	3.5	
6510	16.6	4.5	96	90	0	  rich	39.4	56.9	19.8	-15.9	325	3.5	
6626	17.2	4.5	96	90	0	  rich	39.4	59	20	-15.9	325	3.4	
6706	16.8	4.6	96	90	0	  rich	39.6	58.1	20	-15.9	325	3.5	
6706	16.8	4.5	82	90	0	  rich	40.2	57.3	20	-15.9	305	2.8	
6301	11.3	2.1	0	30	0	22.7	10.7	5.2	ECU. 	-15.7	LCM.  	1.3	
5858	4.3	2	0	10	0	  lean	11.1	6.4	ECU. 	-16.8	LCM.  	1.6	
5428	-2.4	2.1	0	10	0	24.5	11.1	6.2	ECU. 	-17	LCM.  	1.6	
5073	-9.8	2.1	0	10	0	24.5	11.3	5.9	ECU. 	-17.2	ECU.  	1.6
I'm only running 2psi more boost between pump and Alky and will likely turn the Alky up another 1.5psi. Anybody see anything which stands out as a possible issue?

PS: My TPS never reaches 100% and has been calibrated with the UTEC.
* Registered users of the site do not see these ads.
xcntrk75 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 11-15-2005, 02:22 PM   #2
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

one possible issue with turning up the wick... what's your MAP scaling look like?

from the logs it seems you transition into 100% column @ 17psi or so. you might want to make that right on the line of the max boost you want to run so that it functions more like an overboost column.

i've looked at so many lines of log with wideband info. it's a bit scary to look at them without it! it sure would be nice to have some idea of your afrs.
ride5000 is offline   Reply With Quote
Old 11-15-2005, 02:38 PM   #3
xcntrk75
Scooby Specialist
 
Member#: 60224
Join Date: Apr 2004
Chapter/Region: MAIC
Location: NOVA
Default

Yes I agree… Fortunately it was tuned with W/B including the Alky MAP. With the juice on it seems to be running a very safe margin with EGT’s below 1400 and absolutely no knock under full pulls. The pump map on the other hand is pushing it pretty hard at 19psi (1450-1500 EGT) and suffers from the occasional knock. Fortunately I have step down maps consisting of -1 timing and +1 fuel per step, for when I’m experiencing some heavy knock I can cut the pump tune back a little.
xcntrk75 is offline   Reply With Quote
Old 11-15-2005, 08:30 PM   #4
CMJ
Scooby Specialist
 
Member#: 39235
Join Date: Jul 2003
Location: L.A., CA
Default

Looking at you maf voltage from both runs you can see that after 5700rpm the extra boost is not realy helping. For the alky map you should try more boost in the midrange dropping to 17psi from 5700 -7000 and run more timing up top.

This should be done after you get a wideband.
CMJ is offline   Reply With Quote
Old 11-15-2005, 11:52 PM   #5
TypeC
Scooby Guru
 
Member#: 9794
Join Date: Aug 2001
Chapter/Region: TXIC
Location: Texas
Vehicle:
02 2.5LWRX-Retired
335i w/twins

Default

Wow, you're removing a LOT of fuel. What did you scale the injectors to? What ECU are you running. With negative correction the whole way (and that large) I'd think you underscaled them.

The reason mention it is I'm running the same fuel setup as you with V39 and WRX ECU and run a max of -3.X to achieve 11.0:1, but you're at -15 in places!

You're pushing some good air
TypeC is offline   Reply With Quote
Old 11-15-2005, 11:59 PM   #6
drees
Scooby Specialist
 
Member#: 25905
Join Date: Oct 2002
Chapter/Region: SCIC
Location: San Diego, CA
Vehicle:
2003 Silver Wagon
Tuned with Enginuity

Default

Quote:
Originally Posted by TypeC
Wow, you're removing a LOT of fuel.
The beauty of water/alky injection.
drees is offline   Reply With Quote
Old 11-16-2005, 12:51 AM   #7
cdvma
Scooby Specialist
 
Member#: 21980
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Central MA
Vehicle:
2002 PSM WRX (Sold)
2017 BMW X5

Default

What were your AFRs tuned too?
cdvma is offline   Reply With Quote
Old 11-16-2005, 02:02 PM   #8
TypeC
Scooby Guru
 
Member#: 9794
Join Date: Aug 2001
Chapter/Region: TXIC
Location: Texas
Vehicle:
02 2.5LWRX-Retired
335i w/twins

Default

Quote:
Originally Posted by drees
The beauty of water/alky injection.
But he doesn't have an WB. We have a very similar fuel setup and if I removed that much I'd be deep in the 12.x:1 range, which is pretty lean for pump, especially lean for having no WB. That's why I mentioned it.
TypeC is offline   Reply With Quote
Old 11-16-2005, 02:06 PM   #9
xcntrk75
Scooby Specialist
 
Member#: 60224
Join Date: Apr 2004
Chapter/Region: MAIC
Location: NOVA
Default

Quote:
Originally Posted by TypeC
Wow, you're removing a LOT of fuel. What did you scale the injectors to? What ECU are you running. With negative correction the whole way (and that large) I'd think you underscaled them.

The reason mention it is I'm running the same fuel setup as you with V39 and WRX ECU and run a max of -3.X to achieve 11.0:1, but you're at -15 in places!

You're pushing some good air
I’m running a Perrin BIG-MAF with intake tube and shorty filter. It was immediately noticed when tuned the MAF/Intake is moving some serious air. To compensate, the tuners (TXS) scaled my 820cc injectors down to 550. It does move some serious air though, 4.6v is some instances…
xcntrk75 is offline   Reply With Quote
Old 11-16-2005, 09:46 PM   #10
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

are you saying you're pulling 4.6 mafv with a bigmaf and a ported vf22?

ride5000 is offline   Reply With Quote
Old 11-17-2005, 12:51 PM   #11
CMJ
Scooby Specialist
 
Member#: 39235
Join Date: Jul 2003
Location: L.A., CA
Default

Is it a vf22 or has it been converted to an 1820? I've seen gt30's pulling that much voltage with the big maf @23 psi.
CMJ is offline   Reply With Quote
Old 11-17-2005, 04:12 PM   #12
x99percent
Scooby Specialist
 
Member#: 27108
Join Date: Oct 2002
Chapter/Region: MWSOC
Location: Detroit-ish, MI
Vehicle:
2004 STi
2004 A4

Default

Quote:
Originally Posted by TypeC
Wow, you're removing a LOT of fuel. What did you scale the injectors to? What ECU are you running. With negative correction the whole way (and that large) I'd think you underscaled them.
I think you're right, based on this:
Quote:
Originally Posted by xcntrk75
I’m running a Perrin BIG-MAF with intake tube and shorty filter. It was immediately noticed when tuned the MAF/Intake is moving some serious air. To compensate, the tuners (TXS) scaled my 820cc injectors down to 550.
With the scaling set that low, you'd have to remove a LOT of fuel in the map, as opposed to letting the injector scaling take care of most of the work for you.
x99percent is offline   Reply With Quote
Old 11-17-2005, 08:09 PM   #13
cdvma
Scooby Specialist
 
Member#: 21980
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Central MA
Vehicle:
2002 PSM WRX (Sold)
2017 BMW X5

Default

FWIW it doesn't matter if you scale them low and remove more from the map or vice-versa. I don't have my modded stockers scaled at all.
cdvma is offline   Reply With Quote
Old 11-17-2005, 08:18 PM   #14
cdvma
Scooby Specialist
 
Member#: 21980
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Central MA
Vehicle:
2002 PSM WRX (Sold)
2017 BMW X5

Default

Quote:
Originally Posted by ride5000
are you saying you're pulling 4.6 mafv with a bigmaf and a ported vf22?

You know what I was curious about this too. I pull 4.4V with a VF22 on an APS 70mm intake which I'm assuming isn't far off from a BigMAF (I can't find a diameter for this). Thats a far cry from 4.6 and I don't recall seing 4.5 or if I did it was probably for a tiny blip. I was also looking for similar numbers yesterday and can't find any. I also run one less PSI where he sees 4.6 (at almost redline) so that probably accounts for it.

Edit! actually here is my RPM/MRP/MAF values from a run today. IAT was 12 to 13, 4th gear pull on flat ground. AFRs in the mid 10s which is also why I'm curious as to what his AFRs are.

Code:
4535	-4.1	3.6
4535	-4.1	4
4604	1.9	4.2
4623	10.2	4.1
4701	15.9	4.1
4741	19.6	4.1
4782	21.2	4.1
4796	21.4	4.1
4930	21.2	4.2
5274	21.2	4.2
5005	21.8	4.2
5035	21.4	4.2
5104	22.1	4.2
5136	22.9	4.2
5151	21.8	4.3
5257	21.8	4.3
5299	21.2	4.3
5324	20.8	4.3
5411	20.2	4.3
5411	20.2	4.3
5464	20	4.3
5509	20.4	4.3
5518	19.4	4.3
5688	19.6	4.3
5678	20	4.3
5640	19.6	4.3
5717	19.8	4.3
5787	20.6	4.3
6172	19.8	4.3
5899	19	4.4
5995	19.4	4.4
6038	19	4.4
6093	19.2	4.4
6093	19.2	4.4
6105	19.8	4.4
6116	19.6	4.3
6161	19.2	4.4
6161	19.8	4.3
6301	19.4	4.4
6277	19	4.3
6253	20.2	4.4
6349	20.2	4.3
6410	20.8	4.4
6435	20.4	4.4
6497	19.6	4.4
6523	18.6	4.4
6574	18.6	4.4
6535	19.4	4.3
6693	19.2	4.4
6653	19.4	4.3
6693	19.4	4.3
6844	19	4.4

Last edited by cdvma; 11-17-2005 at 08:32 PM.
cdvma is offline   Reply With Quote
Old 11-17-2005, 09:00 PM   #15
xcntrk75
Scooby Specialist
 
Member#: 60224
Join Date: Apr 2004
Chapter/Region: MAIC
Location: NOVA
Default

Quote:
Originally Posted by cdvma
...AFRs in the mid 10s which is also why I'm curious as to what his AFRs are...
I’m curious what my AFR’s are too

Seriously though, TXS did the tune and I didn’t get a chance to witness the AFR’s under full pull on the dyno, for pump or Alky...

The first thing noticed at the beginning of the tune was that the MAF was pulling voltage at idle which resulted in more fuel and rich conditions. It was assumed this was due to the higher flow from my filter, intake, and tube setup. I believe that rather then significantly cutting the fuel map up, the guys simply reduced the scaling on the injectors from 820 (pressure tested) to 550, then worked the fuel map from there.

It was a difficult tune to begin with as I had a damn IC hose which kept popping off the pressure side of the turbo. This didn’t affect the pump map(s) much as it seemed to hold up to about 19psi, but under the alky it was leaking and popping off every couple of pulls.

I replaced the hose the next day and had to completely retune my AVC-R as a result. It appears the IC host was bleeding throughout the entire tune anyway as the beast came alive after the new hose and reconfigured AVC-R.

Put down 286ft-lb/309whp on the juice at 20psi with the boost leak. I’m guessing I got another 20whp (330'ish) after fixing the boost leak and reconfiguring the AVC-R at 22psi.

Thanks all for the comments

Man I need to get a W/B
xcntrk75 is offline   Reply With Quote
Old 11-17-2005, 10:10 PM   #16
cdvma
Scooby Specialist
 
Member#: 21980
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Central MA
Vehicle:
2002 PSM WRX (Sold)
2017 BMW X5

Default

Cool. I put down 275whp on XXs dyna pack in the dead heat of summer but I'm not catless...are you? I know its not a huge VF22 number but I was happy with it. I never wanted it bleeding edge. What mix of alky are you running?
cdvma is offline   Reply With Quote
Old 11-17-2005, 10:48 PM   #17
xcntrk75
Scooby Specialist
 
Member#: 60224
Join Date: Apr 2004
Chapter/Region: MAIC
Location: NOVA
Default

^^^^ 50% distilled water and 50% denatured alcohol (ethanol). I run a custom built catless exhaust. Custom cuz it’s a motor swap setup installed in this:



xcntrk75 is offline   Reply With Quote
Old 11-17-2005, 11:05 PM   #18
crystalhelix
Scooby Guru
 
Member#: 35313
Join Date: Apr 2003
Chapter/Region: MAIC
Location: SpryRacing.com AgileAuto.com
Vehicle:
Spry Forester
Silver Spark

Default

sweet!
crystalhelix is offline   Reply With Quote
Old 11-18-2005, 08:40 AM   #19
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

so are you getting 4.6mafv with a bigmaf and vf22?

if that was while it was leaking boost, then sure... but that's an awful lot of air otherwise.
ride5000 is offline   Reply With Quote
Old 11-18-2005, 09:48 AM   #20
xcntrk75
Scooby Specialist
 
Member#: 60224
Join Date: Apr 2004
Chapter/Region: MAIC
Location: NOVA
Default

Quote:
Originally Posted by ride5000
so are you getting 4.6mafv with a bigmaf and vf22?
if that was while it was leaking boost, then sure... but that's an awful lot of air otherwise.
Yeah I agree, something doesn’t jive…

After investigating a little further, it appears the intake I’m using is the regular Perrin short-ram, not the Big-Maf version. Sorry for the misinformation…

I bought the intake setup used and replaced the foam element with a paper K&N after loosing my first MAF from it. This intake setup is combined with a Perrin intake tube (regular, not 3” big-tube version). During the last tune it was “assumed” the intake was in-fact the Big-Maf due to the MAF voltage issue at idle. After looking at it up close, it’s clearly a strait MAF tube not the beveled tube like the Big-Maf.

These logs were taken post boost fix. Really the 4.6 is only a blip in each sets of logs, the constant maf value is a solid 4.5… From the quick conversion calc, that equals 4.5=339hp
xcntrk75 is offline   Reply With Quote
Old 11-18-2005, 09:54 AM   #21
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

that makes a LOT more sense.

nonetheless, 4.5/4.6 is not too shabby with a VFxx.
ride5000 is offline   Reply With Quote
Old 11-18-2005, 12:50 PM   #22
x99percent
Scooby Specialist
 
Member#: 27108
Join Date: Oct 2002
Chapter/Region: MWSOC
Location: Detroit-ish, MI
Vehicle:
2004 STi
2004 A4

Default

Quote:
Originally Posted by cdvma
FWIW it doesn't matter if you scale them low and remove more from the map or vice-versa. I don't have my modded stockers scaled at all.
It can work just fine either way, but I'd *prefer* to have numbers closer to zero in the fuel map as opposed to +/- 15%. I would think that better scaling would make the inital tune easier.
x99percent is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can someone help me analyze my log wrx88 Commercial ECU Reflashes 4 12-25-2006 11:14 PM
Please Analyze my Logs Need BB Engine Management & Tuning 4 08-05-2005 02:34 PM
analyze my log flwrx Engine Management & Tuning 43 07-13-2005 02:16 AM
Analyze my log Sperm Off-Topic 8 07-12-2005 03:32 PM
Analyze my logs (VF22) bhkim126 Engine Management & Tuning 6 11-27-2003 02:10 PM

All times are GMT -4. The time now is 12:42 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.