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Old 09-24-2007, 08:42 PM   #1
forced4door
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Default 1/4mi time Question

So I recently had my 02 wrx tuned, it made 302hp and 272tq. Last night I ran it for the first time
14.2@101 2.42 60ft
13.7@101 2.04 60ft (missed 3rd)
13.5@100 2.18 60ft
Deadbolt 18g 7cm, UR EWG, 750cc deatchwerks, Modded ERZ downpipe, 3" exhaust, walbro pump, boost solenoid, Samco intake pipe, Cobb filter, Ebay tmic.
Stock clutch, stock trans and 20psi boost.

I was kinda disappointed about the times I know the 60fts need much improvement but the trap speeds seem very low from what Ive seen from other posts. Are they where they should be or are they really low. Its was around 65F at the track. Any input??
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Old 09-24-2007, 08:53 PM   #2
colin edge
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Those traps are about right, but those 60ft's definitely need to drop. I was told once that .1 in the 60ft is roughly .2 in the 1/4 mile.
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Old 09-24-2007, 08:53 PM   #3
TyranosaurusWRX
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I would say it's a little low, especially at 65deg. I ran a 12.85@106.5 on the 18g w/ a 1.7~ 60ft on the stock 2.0/tranny. Temps were in the mid 70's. Difference is I had IWG, but a 8cm hot side so in the end not too different. I believe I was running 20-21 psi.
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Old 09-24-2007, 08:55 PM   #4
PaulRex
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well, as you can see your e.t. got lower and lower the better you got at driving your car. Its in my opinion that your trap will go up when you really get the hang of driving at the strip, and also your TMIC was maybe heatsoaked. 65 is a good temp though i dunno.

Generally speaking though, thats a low trapfor 300+hp. If that trap was achieved on a perfect pass I would say the engine makes about 220whp. But its either your car is down on power, your not driving your best yet, and your tmic was heatsoaked. maybe a combo of all of those things. Its not as easy to drive in a straightline as people think heh.. especially with our 4wd turbo cars.

But look at that last time.. 13.5with a 2.2 60'. Your trap is going to go up with a better pass, your engine has to be making decent power to pull out a 13.5 with a 2.2 60'. If you can cut a 1.7 60' and shift quickly, judging by these numbers you'll run at least a 13.0, and the trap will go higher. how much higher ??

Paul
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Old 09-24-2007, 09:05 PM   #5
forced4door
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I wonder whats up then there was an hours time between each pass the IC was cool to the touch so I dont believe it was heat soaked. Ive been to the track many times just not with this car. I just have to get used to the awd launch. I'm curious to see if its still runnin at 302hp 272tq.
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Old 09-24-2007, 09:07 PM   #6
TAPOUT
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When I first went to ems and TBE, I had 302 HP and 306 tq. I ran 12.7@106 with 1.71 60 ft. Launch better and the time will plummet. I am sure you have more in it. The key is the launch and the 1-2 shift. Get those right, and the rest is easy.
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Old 09-24-2007, 09:07 PM   #7
TyranosaurusWRX
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I might add that I was sporting a V1 TXS tmic. Even flogging a 20g/2.35ltr I still don't heat soak it. Do you have engine management or was it tuned via Enginuity? I wonder if you had any knock events with the chilly air...that would slow you down a bit. Otherwise, not sure.....
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Old 09-24-2007, 09:29 PM   #8
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Cobb Accessport V1
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Old 09-24-2007, 10:34 PM   #9
rexman2002
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Those traps can be achieved with ots stage 2 map...
work on the driving part I guess...
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Old 09-24-2007, 10:44 PM   #10
forced4door
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Quote:
Originally Posted by rexman2002 View Post
Those traps can be achieved with ots stage 2 map...
work on the driving part I guess...
Yea I know, its not my driving thats for sure and 60ft times shouldn't effect traps that much. I might have to schedule a tune or do a compression test?
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Old 09-24-2007, 11:53 PM   #11
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Traps are off for 300 whp... should be 105 up?


But notice how your traps are consistant, but your ETs are not. So your power is consistant, but your driving is getting better (Launch and shifting).
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Old 09-25-2007, 12:01 AM   #12
bjonesy
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i ran this past weekend at 13.9 at 99. Ive only got a stage 2 tune, up pipe, downpipe, a cut out and a dirty air filter. Work on the driving, you dont HAVE to leave right when the tree turns green. Take your time, line up the RPM's. Once you can do it at your own pace, try doing it at the trees pace
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Old 09-25-2007, 08:38 AM   #13
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Quote:
Originally Posted by forced4door View Post
Yea I know, its not my driving thats for sure and 60ft times shouldn't effect traps that much. I might have to schedule a tune or do a compression test?
i disagree. like i said a 13.5 with a 2.2 60' would not be achieved by a normal stg.2 wrx making 220-240whp IMO.. ive raced at the track the most at that power level and i just dont see it happening. therefore its ok to assume your engine is making more power than that. i think with a better 60' and good driving your trap will go up. you cant assume there is a problem with runs like this.. there is no way you didn't bog that engine with an 18G on there and a 2.0+60'. unless it doest feel good on the street u wouldnt assume the worst case scenario.
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Old 09-26-2007, 08:20 AM   #14
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The reason you are trapping low is you are launching, and the car is falling on its face. You are probably bogging the car, and the 1-2 shift is nowhere near fast enough. When the car bogs, it drops out of boost, and it takes time to get the turbo spooled back up. When I first started to go to the track with my car being bone stock, I was hesitant at the line. I was trapping 100-101 with 1.9 60fts the first time out and my times were 13.6-14.0. The second time out I was more comfortable and had learned how to get off the line. I was trapping 103-104 and pulling 1.7X 60fts and my times were 13.3-13.5.
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Old 09-26-2007, 10:09 AM   #15
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my 18g bugeye trapped 110 with baaaaaad compressor surge for some reason just before i hit the traps. it ran like a sob until a few seconds into 4th, then it would surge like crazy. of course, i could only do 13.0 because i didnt want to murder the drivetrain.. mine had exactly 300whp.. i like your setup, i was happy with mine until a c5 Z got me by 2 cars.. he wont stand a chance this time
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Old 09-26-2007, 12:17 PM   #16
Phatron
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Quote:
Originally Posted by colin edge View Post
Those traps are about right, but those 60ft's definitely need to drop. I was told once that .1 in the 60ft is roughly .2 in the 1/4 mile.
Quote:
Originally Posted by forced4door View Post
14.2@101 2.42 60ft

13.5@100 2.18 60ft
That was my experience with the WRX too. You can see it worked for these two runs.

The best 60' you will probably get in your wrx is a 1.8X. Very frew people run 1.7 60's in the wrx.
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