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Old 04-26-2008, 03:32 PM   #1
rxer311
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Join Date: Feb 2006
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'07 STI
Satin White Pearl

Default '07 STi "stage 2" at the track

To start out I have an '07 sti with a catted 3" turboback exh, 255l/hr fuel pump, perrin EBCS, and SPT intake. Tuned by Chad Block at CBRD Speedfactory. It put down 263hp and 284ft/lb at the wheels on the Mustang Dyno.

Anyway, I went to the track today just to see what it would do in the 1/4 mile. I don't usually drive this way but I thought it would be fun. I don't have a scanner for my time slip but this is what I did on my best run:

60' - 1.9
1/4 mile - 13.226
speed - 106.7mph

Any advice on how to improve my 60' times? I kept bogging in first gear and I kept missing shifts all day! I need some kartboy shifter bushings and some driving lessons!

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Old 04-26-2008, 03:34 PM   #2
k04sti
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If you are bogging 1st gear then you are letting out the clutch too fast. Let the clutch slower and once you feel like it's engaging then you let it out faster.
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Old 04-26-2008, 04:07 PM   #3
ggta
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Yeah, you definitely need some improvement on the launching.
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Old 04-26-2008, 04:24 PM   #4
Wes_FSTGDB
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Trapping at 106mph should be at least a 12.6 or 12.7 for sure.

-Wes
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Old 04-26-2008, 04:28 PM   #5
tux121
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Rev back and forth between 4k-5k and let off the clutch little by little until you feel it grab. After that go OPEN THROTTLE and then let off the clutch. Of course I don't do that anymore I have Launch Control
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Old 04-26-2008, 04:56 PM   #6
rxer311
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^^^LOL. I am not much of a drag racer though. I just wanted to see what it would do in a straight line. I was a bit disappointed with the time but it was my first time out with it so all in all not too bad!
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Old 04-26-2008, 05:07 PM   #7
downsti
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Quote:
Originally Posted by k04sti View Post
If you are bogging 1st gear then you are letting out the clutch too fast. Let the clutch slower and once you feel like it's engaging then you let it out faster.
your launch is really not the problem here.. your trapping 106mph. but 60 foot can also mess around with ur trap speed

its your shifting. learn to shift faster. and learn to take advantage of a good shift points
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Old 04-26-2008, 05:09 PM   #8
rxer311
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^^^Thanks, I'll play around with that next time I go to the track. I am also ordering a kartboy short shifter and bushings next week now!
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Old 04-26-2008, 05:11 PM   #9
tux121
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Quote:
Originally Posted by downsti View Post
your launch is really not the problem here.. your trapping 106mph. but 60 foot can also mess around with ur trap speed

its your shifting. learn to shift faster. and learn to take advantage of a good shift points
I think it's the launch. I did 14.0sec 1/4mile with a trap speed of 98mph 60ft=2.0 and then did 13.7sec 1/4mile with a trap speed of 97mph 60ft=1.899. Although I never figured out why that is.
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Old 04-26-2008, 05:30 PM   #10
downsti
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like i said its not really the launch thats the problem here.

1.9 is not bad at all

i have cut 1.7 vs 1.9 and my 1.9 60 foot has trapp faster than my 1.7 thats me shifting the same way.

trap speed can give you a general idea what you can run on the 1/4 mile E.T. but you cant rely on it on shietty 60 foot

see thats the thing people focus too much on the 60 foot. when really the big problem here is shifting. our sti are short gearing cars. you have shift 4 times finish 1/4mile ( on 07 depends on how much power your making ) i believe shifting is the most important part of drag racing on a manual car. then 60 foot

i focus way way more into shifting that launching. i had to make sure i could take advantage of my shift points by a very fast shift. because if you have a nice ideal shift points from your power band, and your shifting slow, its basicly useless.
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Old 04-27-2008, 11:53 AM   #11
smokey07
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shifting is quite a bit more important for trap speed. the first time i drove my buddy's 18g bugeye i went 13.9 @ 110 with a 2.3 60', basically idled it off the line. granted, if i had launched it hard, the trap may not have been 110 but i didnt get a second chance to try and destroy his axles ...
he put 300.8whp down at mach v; hks tbe (2.5 in. dp),walbro,hallman mbc, and a perrin 3" inlet.
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Old 04-27-2008, 01:26 PM   #12
rexman2002
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13.2xx for a stage 2 Sti?? You can do better than that. At least high 12's.
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Old 04-27-2008, 01:33 PM   #13
rxer311
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^^^I know I should do better than that...I am just trying to figure out how.
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Old 04-27-2008, 02:24 PM   #14
jordanretro1223
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Quote:
Originally Posted by rxer311 View Post
^^^I know I should do better than that...I am just trying to figure out how.
My guess is your shifting and not so much the 60 ft although a better 60 ft would probably help though.

My STI is my first manual car and I'll be honest, I suck at shifting fast and I've never attempted a launch, so I bet if I go to the track my times will be very SLOW.
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Old 04-27-2008, 04:51 PM   #15
CynicX
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Car looks good, kind of like that little vent thing black vs white though...

Keep practicing, theres definitely room for improvement. I ran a 13.2 there (Cecil) with very similar mods in a stock turbo WRX....
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