WisconsinMonSTAR
Proven Member
- 129
- 29
- Apr 20, 2014
-
Kenosha,
Wisconsin
So I took my 98 GSX to the track for the first time a few weeks ago. I was on a stock auto parts store clutch, stock turbo, but was still expecting to get into the 14s. I was disappointed with steady mid 15s though. I will post my time slips below, and hopefully some of you can analyze what the issue is here.
Mods:
Extreme psi open intake, full 3" downpipe and exhaust, no cat, evo ix mr bypass valve, evo ix mr fuel pump, and running basic ceddymods flash.
I have a boost gauge and my boost has always maxed out right at 15 psi, it has never been an issue spooling up right around 2500-2800 rpms.
I had launch control originally set at 3700 rpms, but switched it to 4500 for the last 3 or 4 passes. Tire pressure may have been my downfall, since they were at 44 psi all around on dunlop direzza summer tires.
At the time, I had a leak right at my o2/dp connection since an o2 housing stud was broken. I just fixed it and the car definitely has a cleaner exhaust note, but I don't feel a huge performance change other than boost sometimes spiking to 17-18 psi if I hammer it in 2nd gear.
I seemed to also have some bad luck. I would either pull a great launch, and grind in 3rd or 4th gear, or I would have a bogged or jumpy launch and then bang all of the gears out perfectly.
It was about 85 degrees on this day as well.
Since then, I have upgraded my clutch and installed a fidanza lightweight flywheel, as well as changed all my drivetrain fluids. Lowered my tires to 36 psi too.
Mods:
Extreme psi open intake, full 3" downpipe and exhaust, no cat, evo ix mr bypass valve, evo ix mr fuel pump, and running basic ceddymods flash.
I have a boost gauge and my boost has always maxed out right at 15 psi, it has never been an issue spooling up right around 2500-2800 rpms.
I had launch control originally set at 3700 rpms, but switched it to 4500 for the last 3 or 4 passes. Tire pressure may have been my downfall, since they were at 44 psi all around on dunlop direzza summer tires.
At the time, I had a leak right at my o2/dp connection since an o2 housing stud was broken. I just fixed it and the car definitely has a cleaner exhaust note, but I don't feel a huge performance change other than boost sometimes spiking to 17-18 psi if I hammer it in 2nd gear.
I seemed to also have some bad luck. I would either pull a great launch, and grind in 3rd or 4th gear, or I would have a bogged or jumpy launch and then bang all of the gears out perfectly.
It was about 85 degrees on this day as well.
Since then, I have upgraded my clutch and installed a fidanza lightweight flywheel, as well as changed all my drivetrain fluids. Lowered my tires to 36 psi too.
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