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Old 09-06-2002, 10:22 PM   #1
silverscooby
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Question Need some input on my 1/4mi times

Ok, I'll start with my mods:

Vishnu Stage Zero (pulley,plugs,unichip,up-pipe)
Samco Intercooler hoses (unichip was re-mapped for these)
BPM GT 3" turbo-back with 1 highflow cat (unichip not re-mapped for this)
I also ran on my 17" Konig Verdicts shod with Kumho 712's at 40psi.

I was running at 16psi on 93 octane pump gas. It was about 75 degrees at the track and I had a two hour drive to the strip. I let the car cool for about 20 minutes once I got to the track. Ok, here's my best run:

60ft 1.912
1/8th 8.812 @77.77
1/4th 13.799 @97.962

Seems really slow to me, I was hoping to be well under 13.5. Any suggestions? Could it be heat soak on the intercooler? I know the rims have to be killing me too. One of my buddies was there with his WRX (Cobb Club Spec kit plus up-pipe) and we ran identical times all night. He was on stock rims with Kumho 712's as well. He has gone 13.3 @100 before on his setup, what's holding me back?

Thanks alot guys!
Jim
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Old 09-06-2002, 10:26 PM   #2
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Get remapped for the exhaust. You're running to lean with the regular Stage Zero mapping.

shiv
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Old 09-06-2002, 10:32 PM   #3
silverscooby
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Shiv, this is Jim Reed. I'll actually be sending you the unichip to re-map for the exhaust along with the VF22, injectors, and fuel pump next week. Actually, Dale Teague will, he'll be doing the install.

Do you think that was the reason for the low times?

Thanks again,
Jim
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Old 09-07-2002, 11:01 AM   #4
SGOSWRX
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First I would let your car cool down for at least an hour after driving to the track. Make sure the IC is cool to the touch. Put a bag of ice on it.
Second.
Your 60' time is to slow for the times you want to run. Back when I had my stage 2 seetup, I ran 13.7 one day with a similar 60' time as yours. The next run I blasted a 1.78 60' time and a 13.39 1/4 mile .If you get your 60' down around 1.80 you will shave several tenths off your total time. It really does make a big difference.
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Old 09-07-2002, 12:15 PM   #5
jmott
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get a better launch.

with a 1.8 60ft, youll be running around 13.5, which is totally reasonable for your mods.

cooling down for an hour after driving to the track is overkill.

the engine is usually in a pretty happy state after being on the highway on the way to the track.

but you may want to wait 45mins between runs if you go more than once.

a bag of ice on the intercooler will speed that wait up.
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Old 09-07-2002, 05:44 PM   #6
silverscooby
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Thanks for the input guys. I was really worried when all I could muster was a 13.77. I'll soon be going with the aformentioned mods plus the vf22, injectors, and fuel pump. In two weeks I plan to run that setup with a mix of 93 octane and 110 (about 97 octane) at 16psi. Feasible to hit mid twelves with that setup and a 1.8 60ft?

Thanks again!
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Old 09-07-2002, 06:12 PM   #7
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Your larger stickier tires may also be slowing you down. I believe all of the fastest quarter mile times on i-club are on stock tires and rims, maybe it's just because all of the guys who have put so much work into engine mods haven't had time or money for tires Seriously though, you may want to put the smaller rims and slicker tires back on, after all if it's just a highway ride to the track there's nothing worng with saving your good tires for track days and twisties.

Edit: I forgot to mention that the larger rims may make you slower because of their higher rotational mass. The sticker than RE92 tires (what tires aren't) may also hurt your launch, as you'll tend to bog rather than jump.
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Old 09-08-2002, 02:45 PM   #8
SGOSWRX
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Quote:
Originally posted by jmott
get a better launch.

with a 1.8 60ft, youll be running around 13.5, which is totally reasonable for your mods.

cooling down for an hour after driving to the track is overkill.

the engine is usually in a pretty happy state after being on the highway on the way to the track.

but you may want to wait 45mins between runs if you go more than once.

a bag of ice on the intercooler will speed that wait up.
Take it from experience ( 100+ time slips in the last 6 months )1 hour cool down is not over kill for a WRX unless its 60 degrees outside.
I quickly learned that my WRX ran much faster times after a long cool down.
The longer your car sits and cools the faster it will run. Thats a fact that I prove every weekend. I'm not just talking about the IC. I'm talking about the engine too.
The cooler the better.
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Old 09-16-2002, 11:09 AM   #9
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Quote:
Originally posted by SGOSWRX


Take it from experience ( 100+ time slips in the last 6 months )1 hour cool down is not over kill for a WRX unless its 60 degrees outside.
I quickly learned that my WRX ran much faster times after a long cool down.
The longer your car sits and cools the faster it will run. Thats a fact that I prove every weekend. I'm not just talking about the IC. I'm talking about the engine too.
The cooler the better.
The only things you want cool are the intake manifold and the intercooler. The rest of the engine works just fine when it's hot. You actually want your turbo and rotating assembly hot. Just pop the hood while you're waiting for your next turn and that will be enough. Icing the intercooler doesn't really do much because by the time the light flashes green, it will be hot again. I tried icing my intercooler the first couple times at the track and it didn't do jack for me.
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Old 09-17-2002, 07:26 AM   #10
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I see you are from Chapel Hill. What track do you run at?

VV
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Old 09-17-2002, 10:43 AM   #11
silverscooby
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I'll be running at Kinston this Thursday, quite awhile from Boone. Are there any 1/4 mile tracks near you?

On a side note, anyone know what kind of WHP I'll be putting down with this setup:

VF22
Up-pipe
BPM GT with one highflow cat
Vishnu Tuned Unichip
Samco Intercooler Hoses
STI injectors
Walbro Fuel Pump
stock intercooler
stock airbox
17 psi on 97 octane


Thanks,
Jim
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Old 09-17-2002, 10:53 AM   #12
VetteVert
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I'd guess mid-high 200's with just 17psi... (guess should be emphasized).

I run at Bristol Dragway, Bristol Tn. About 1.5 hours from Boone, and the closest track I know of.

VV

Quote:
Originally posted by silverscooby
I'll be running at Kinston this Thursday, quite awhile from Boone. Are there any 1/4 mile tracks near you?

On a side note, anyone know what kind of WHP I'll be putting down with this setup:

VF22
Up-pipe
BPM GT with one highflow cat
Vishnu Tuned Unichip
Samco Intercooler Hoses
STI injectors
Walbro Fuel Pump
stock intercooler
stock airbox
17 psi on 97 octane


Thanks,
Jim
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Old 09-18-2002, 08:22 PM   #13
fastsubie
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Quote:
(unichip not re-mapped for this)

Jim,

I'm with Shiv on that one. Something dosn't seem right. At the shootout on Saturday I did a little better than your times here . All I have for HP mods are an uppie, Cat-back and a Joe-P set to 15psi..

Times below..

60ft 1.864
1/8th 8.8.656 @ 79.59
1/4th 13.565 @100.42

The next two passes were 13.538 and 13.537 but I didn't break 100mph again that day. The only reason I can think of is for the first pass I had iced the IC for 20min. The next 2 were hot passes. I think with a little tunning you should be in the low 13's. Also I was on the stocker tires..


Good Luck

-Fess
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Old 09-20-2002, 02:52 PM   #14
silverscooby
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A little update on the situation...

Since that initial run I had a vf22, STI injectors, and a walbro fuel pump installed. I also had the unichip re-mapped with all my modifications. Stock IC and stock airbox, btw

I made a few passes last night set at 15psi on pump gas. I'm still running on my heavy ass rims and kumho tires, but I'm getting stock rims/tires early next week. Here is my best pass:

60ft: 1.814
1/8th: 8.374 @83.2
1/4th: 13.104 @104.580

I need to work on my 1st to 2nd shift, I know I'm leaving some time on the table with that. I figure if I run race gas, boost to 16.5 and run stock tires I should be in the 12's.

Later,
Jim
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Old 09-20-2002, 04:06 PM   #15
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13.1 @ 15psi...cool

thanks for posting that.
I'll be running the same setup at Battle next weekend.

I'll put some race gas in and turn the boost up about 2psi (to 18) and see what times I can run, hopefully with that I can hit my 12.

I'll let you know how much whp I put down when I get dynod on my utec in a couple weeks (if your interested).

Rob
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Old 09-20-2002, 06:09 PM   #16
silverscooby
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Hell yeah, I'd be very interested! Do you have a TXS Unichip right now? I have a Vishnu Unichip and they keep the stock fuel cut at 17 psi. For me to run 18psi I'd have to get a FCD or something.
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