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Old 06-24-2005, 12:31 PM   #1
gusto
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Default Alot of Slips...tell me about my car.

Here is all my slips from a drag day held out here in NH

this is the first time i ever did this, and am not a great drag racer by any means.

basically take a look and tell me what you can deduct from this. the MPH peaked and valley'd id assume to heat soak/track temps as day went on. iced and let cool for 30 min between consecutive runs.

no criticisms needed. just plain direct information is all i need.

im just confused at the trap speeds being all over the place.

thanks

here is pertinent mod list:
-Borla Hush CBE
-Samco Sport Ancillary Hoses
-K&N Drop in Air Filter
-APS Cast Up-Pipe
-Stromung Ceramic Coated DP
-Gutted Stock Midpipe
-ECUTek by KTR
-AMSOIL 10w30 Synthetic Oil
-Kartboy Shifter Bushings
-MRT Whiteline Rear Diff. Bushing Kit
-AMSOIL 75w90 Synthetic Gear Oil
-ROTA Tarmac II 17" Gunmetallic
-Falken ZE512 225/45/17
-McGard Spline Drive Black Lugnuts
-Tanabe GF210 Springs
-KYB AGX 4-way Adjustable Gas Shocks
-MRT Whiteline Front Strut Tower Brace
-MRT Whiteline Rear Strut Tower Brace
-MRT Whiteline Steering Rack Bushings
-MRT Front & Rear Alloy Endlinks
-AXXIS Ultimate Brake Pads
-Stoptech Stainless Steel Brake Lines
-Stoptech Slotted Rotors Front & Rear
-Perrin Rear Adjustable Sway Bar
-Perrin Rear Hardened Sway Bar Mounts
-STI Hood Scoop

Dyno Dynamics 207 WHP/212TQ

Code:
R/T	1.152	1.115	1.051	.979	1.060	1.126	1.020	1.125	1.162	1.115	.984	.852	.973	1.163	n/a	1.133
60'	2.234	2.324	2.630	2.133	2.442	2.370	2.066	2.302	1.98	2.280	1.983	2.272	2.376	2.269	n/a	2.347
300'	6.183	6.328	7.171	6.059	6.512	6.446	5.992	6.381	5.898	6.252	5.848	6.251	6.353	6.236	n/a	6.352
1/8	9.428	9.550	10.470	9.293	9.784	9.662	9.170	9.639	9.078	9.428	9.008	9.424	9.526	9.444	n/a	9.566
MPH	75.77	76.54	74.03	76.30	74.98	76.57	77.74	75.65	77.29	77.51	77.49	77.57	77.06	76.96	n/a	77.02
1000'	12.149	12.255	13.230	11.993	12.527	12.373	11.856	12.378	11.773	12.116	11.7	12.116	12.202	12.150	n/a	12.261
1/4	14.451	14.562	15.537	14.326	14.868	14.672	14.144	14.697	14.066	14.39	13.98	14.399	14.467	14.461	n/a	14.550
MPH	96.98	97.52	97.37	97.44	96.05	94.87	95.96	93.97	93.29	95.56	96.20	95.73	99.14	98.19	n/a	95.58
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Old 06-24-2005, 12:37 PM   #2
xcntrk75
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I deduct that your launching needs improvement. As you can see from your data, your two best 1/4 times were also the two best 60fts. If you can practice your launches you’ll end up with a better 60ft and increase your 1/4 times. For a Stage-II car, if you can get into the 1.7x 60fts it will net you closer to a mid 13 run…

Also it looks like your “speed shifting” may need improvement too as your trap times vary from 94 – 99mph. This is probably due to fluctuations in the time it’s taking you to fly through the gears…

Good Luck
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Old 06-24-2005, 12:45 PM   #3
tm999xxx
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slip that clutch out a lot quicker...goal for a 1.7 60
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Old 06-24-2005, 12:52 PM   #4
Phatron
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Quote:
Originally Posted by Gusto_MA
no criticisms needed. just plain direct information is all i need.

here is pertinent mod list:
-K&N Drop in Air Filter
-APS Cast Up-Pipe
-Stromung Ceramic Coated DP
-Gutted Stock Midpipe
-Borla Hush CBE
-ECUTek by KTR
-ROTA Tarmac II 17" Gunmetallic
-Falken ZE512 225/45/17

Dyno Dynamics 207 WHP/212TQ

Code:
R/T	1.152	1.115	1.051	.979	1.060	1.126	1.020	1.125	1.162	1.115	.984	.852	.973	1.163	n/a	1.133
60'	2.234	2.324	2.630	2.133	2.442	2.370	2.066	2.302	1.98	2.280	1.983	2.272	2.376	2.269	n/a	2.347
300'	6.183	6.328	7.171	6.059	6.512	6.446	5.992	6.381	5.898	6.252	5.848	6.251	6.353	6.236	n/a	6.352
1/8	9.428	9.550	10.470	9.293	9.784	9.662	9.170	9.639	9.078	9.428	9.008	9.424	9.526	9.444	n/a	9.566
MPH	75.77	76.54	74.03	76.30	74.98	76.57	77.74	75.65	77.29	77.51	77.49	77.57	77.06	76.96	n/a	77.02
1000'	12.149	12.255	13.230	11.993	12.527	12.373	11.856	12.378	11.773	12.116	11.7	12.116	12.202	12.150	n/a	12.261
1/4	14.451	14.562	15.537	14.326	14.868	14.672	14.144	14.697	14.066	14.39	13.98	14.399	14.467	14.461	n/a	14.550
MPH	96.98	97.52	97.37	97.44	96.05	94.87	95.96	93.97	93.29	95.56	96.20	95.73	99.14	98.19	n/a	95.58
So you basically have an up pipe and tbe with Ecutek tune.
Look at your 60' times. All over 2.0 except for 2 runs, which were your best times of 13.98 and 14.06. This is one of the most critical parts of doing the 1/4 in a wrx. You have to get the launch and the 1-2 shift down to see the full potential of your setup. If you got your 60' down to 1.7-1.8 you could run 13.3-13.4. For every 0.1 you take off your 60' you should gain 0.2 in your overall ET (of course thats when you have clean runs and dont screw up a shift further down the track).
Putting the stock 16" on for track days may help a little. Taking the STi scoop off while you run may help too and fold in your mirrors. That scoop is a monster and adds a lot of drag
I havent been able to get my 60' under a 1.95 since i put on my 17".
Your power is there to run low 13's. Just practice. You can search through the forums for launch techniques and shift points and read up, but when it comes down to it its all about practice.
Read this other thread too. This guy has a up pipe, tbe, vf34 and cobb street tuner and he did a 12.8 and had a 108 mph trap on another run. So if you wanna get into the 12's you could pick up a vf34 used for pretty cheap, then practice like a mofo.
http://forums.nasioc.com/forums/showthread.php?t=791666
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Old 06-24-2005, 12:54 PM   #5
dug-e-fresh
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I am thinking he needs alot more rpm on the launch as well, not just slipping the clutch.

Why was the mph all over the place? Without knowing your shifting skills, I say knock. The ECU was pulling timing on some of the runs.

Either you were running crap gas, or the tune is abit on the aggressive side.

However, if you are not very consistant when and how fast you shift during the run, that too can seriously affect your trap speed.

def
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Old 06-24-2005, 01:30 PM   #6
gusto
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Default

i didnt think id care, but its eating me from the inside that i have the car for better times, and am not getting them. practice is key definately.

im going to the track next WED instead of waiting till next year like i thought.

some of the runs you can see were horrible and were missed shifts or really bad bogged launches.

im running 14.5 psi btw.

swapping out the gutted midpipe for a true 3" would give me more up top, no? would that squeak out the extra 1-2 mph i need? of course at the mercy of losing a couple ft/lb.

i do have to launch somewhat conservatively as ive got a stock clutch w/ 77k on it.

i dont plan to make a real habit of drag, but its nice to know.

thanks for replies
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Old 06-24-2005, 01:32 PM   #7
Phatron
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Upon further inspection, I think DEF may be onto something.

I'm assuming those slips are in order through the day. With that said, your 1/8 mph became much more consistent as the day went on, yet your overall trap was still "jumping" by as much as 6 mph.
I would say either you were knocking in 3rd and/or 4th or you were having some problems with the 3-4 shift.
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Old 06-24-2005, 01:33 PM   #8
gusto
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Default

crap, forgot to add in...

the 3rd/4th was probably 150ft from the line. thatsa guesstimate but it was SUPER close.

i tried to just run it out in 3rd once and hit the limiter...

now should i shift earlier down the track so i dont hit the 3/4 switch at such a late point?
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Old 06-24-2005, 01:52 PM   #9
Evil STI
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Don't ever hit fuel cut in these cars when running the 1/4. It will instantly retard timing and decrease boost until it 'feels' that it is safe to run aggressive again, which won't happen right away.
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Old 06-24-2005, 01:57 PM   #10
gusto
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Quote:
Originally Posted by Evil STI
Don't ever hit fuel cut in these cars when running the 1/4. It will instantly retard timing and decrease boost until it 'feels' that it is safe to run aggressive again, which won't happen right away.
which could explain the sudden drop in MPH across those middle runs....
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Old 06-24-2005, 02:04 PM   #11
mbiker97
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Just practice your launching and shifting. My friend was running a 13.2x with similar mods.
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Old 06-24-2005, 02:07 PM   #12
jblaine
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Why are you running 14.5psi peak with a turbo and exhaust that can handle 16.5 from 3500-5000RPM or so?

FWIW, I dyno'd last year at 200whp on the same dyno at KTR and my trap speed was repeatedly 97-98 at NED in NH. Vishnu Stage 1 off-the-shelf reflash (16psi peak, all timing fantastic), TBE with cat, up-pipe, Samco IC hoses.
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Old 06-24-2005, 02:13 PM   #13
jblaine
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You have a single "on its way to approaching even decent" 60' time in there.

As has been said many times, and I am FARRR from a launchmaster... 4800-5000RPM, release your clutch to where it almost engages... then simultaneously lift off the clutch like stepping in dog **** (roughly .5sec time) and stomp gas.

Practice at stoplights in school zones regularly.
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Old 06-24-2005, 02:15 PM   #14
DrKicker
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Quote:
Originally Posted by Gusto_MA
which could explain the sudden drop in MPH across those middle runs....
Especially since it started after his 14.144 @ 95.96 which is probably the run where he bounced the rev limiter in 3rd. I've bounced the rev limiter in 3rd three times and the mph was 95.9x through the trap each time.

Basically, like everyone else has said, practice the launch and the consistency of when and how you are shifting.
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Old 06-25-2005, 07:37 PM   #15
gusto
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weekend bump. any more info?
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Old 06-25-2005, 10:03 PM   #16
McBain_TP
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Quote:
Originally Posted by Gusto_MA
i didnt think id care, but its eating me from the inside that i have the car for better times, and am not getting them. practice is key definately.
That's how it begins... Are you going Wednesday the 29th? The only advice I could give would be generic launching tips.
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Old 06-26-2005, 07:03 AM   #17
V6TurboTA
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Quote:
Originally Posted by jblaine
You have a single "on its way to approaching even decent" 60' time in there.

As has been said many times, and I am FARRR from a launchmaster... 4800-5000RPM, release your clutch to where it almost engages... then simultaneously lift off the clutch like stepping in dog **** (roughly .5sec time) and stomp gas.

Practice at stoplights in school zones regularly.
nice

~v6
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Old 06-26-2005, 11:07 PM   #18
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I have some thoughts.

Rev it higher at the start maybe 5000 rpms or so and try to get some wheelspin. That works the best for me.

Also, don't try to wind it out too much before shifting. The power is probably dropping way off after 6500 rpms.

For a better RT don't wait for the green, go on the last yellow (this won't change your ET though).

Lastly, you really shouldn't drag race, it's not good for the car.
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Old 06-26-2005, 11:23 PM   #19
sonicowrx03
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My comments are straight to the point. Your reaction time is very bad and your 60' is even worst.
Rule of thumb is basicly start releasing the clutch pedal as you see the last amber light on the three light.
Secondly you eed to rev up your engine over 3500rpm in order to have a decent launch. A 1.8 is very obtainable on the stockers 205/55/16"

Last but not least, despite your huge list of mods, your times correspond to a light moded WRX, I mean you done have much done to your car, once you control your reaction time and your launches I expect high 13's for your car.

best of luck!
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Old 06-27-2005, 12:00 AM   #20
MJU1983
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I can tell you sleep at the line and cant launch very well?
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Old 06-27-2005, 12:45 AM   #21
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out of curiosity who tuned your car and what dyno were you on?...like it has been said your 60' times is what is killing you...also your reaction times are slow...
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Old 06-27-2005, 07:38 AM   #22
pezman04wrx
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I agree with what's been said already ...
The 60' times are killing you ... (My first three runs of the day were right with you, 2.2's ... I changed the r's to about 4500-5k, and got some slight wheel spin ... It consistently hit 1.9's, but low 1.9's were the best I could get with exception of two runs)
Your 1/8 mile speed and trap are down a couple mph, but very consistent ... (Get the 60' down a bit better, do what you're already doing here and it'll get better)
Your 1/4 time and mph are all over the map ... (Not sure here, Tuning can't be fixed without throwing money at it ... Shifting can be better regardless though ... When I was making my later passes, the best passes came at shifting 1-2 (7200) 2-3 (7000) 3-4 (6900) ... The last ten passes or so were all 13.4-13.5 100.26-101.50 with one better run ... When I made my first few (10 ) passes I was doing what I had heard was the best for the wrx, hitting 7200-7300 each gear ... The runs were consistent, but 99mph ...

Disclaimer: I've still got alot to learn as well ... From what I've heard I should have been running 102's all day ... Maybe next time I'll bring ice ...
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