wat year gtp
10-25-2004, 10:35 AM
#21
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I have a 2 door 98 here. Mine is completely stock (im going to spend the money on the TA 
). It ran a 15.0 without trying hard. Exhaust and intake will get you solidly in the 14s. Low end torque is awesome on these. The bleed off valve they use lets the supercharger make full boost by 2000 rpm.
). It ran a 15.0 without trying hard. Exhaust and intake will get you solidly in the 14s. Low end torque is awesome on these. The bleed off valve they use lets the supercharger make full boost by 2000 rpm. 
10-25-2004, 12:23 PM
#22
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bleed off valve .. The GTP is already a mid-high 14 sec car, bone stock
and respond wonderfully to mods!.. Gotta love FI 
Last edited by BlownGTX; 10-25-2004 at 12:31 PM.
10-25-2004, 12:24 PM
#23
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My mom's got either a 98 or 99 I forget. Just from what I've seen of the interior quality it's a little on the turdy side. The latest problem we have with it, which isn't an isolated problem since many others have it, is that the crank positioning sensor needs to be replaced. After weeks of my mom and dad driving it, it would randomly bog down or die. It didn't matter if it was the interstate, back roads, or driveway. Stumble stumble stumble die. Other than quality and bugs here and there it is definately a strong car. Too bad it's fwd and V6. Oh, it has torque steer something fierce when slamming the gas around 45-50 mph.
10-26-2004, 08:15 AM
#25
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My buddies GTP could only pull out a 15.3, was on a pretty good day at milan, after trying different tire pressures and everything. Seen much faster ones though
10-30-2004, 12:43 PM
#27
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My friend has 2000 with u-bend eliminator, 3.4 pulley, reprogrammed ecm and ram air. He has run 13.19 with stock cat-back. Every other run was near 14+ because traction on street tires can be an issue.
10-30-2004, 02:03 PM
#29
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My friend has 2000 with u-bend eliminator, 3.4 pulley, reprogrammed ecm and ram air. He has run 13.19 with stock cat-back.
3.4" Pulley = 25-30 fwhp with supporting mods [Intake, U-Bend, Plugs, and PCM]
Ram Air = 0 HP [Ram Air is useless on a FI car]
U-Bend = maybe 2 fwhp
PCM = 0 HP [good for optimizing gains from pullies, rockers etc.. ]
Finally, the stock cat-back on GTPs flows pretty darn good!.. The only restriction is the U-Bend and Downpipe...
10-30-2004, 02:49 PM
#30
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Originally Posted by BlownGTX
He's gotta have much more than just those mods to have run a 13.19 sec quarter mile. Those mods are good for low 14s or *maybe* a 13.9 at best!
10-30-2004, 06:00 PM
#31
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educate yourself at : www.clubgp.com/newforum
There's absolutely NO way a GTP will run 13.1 with a 3.4", PCM, and U-bend..
The stock Intake is restrictive, yes. But a R/A hood does nothing for FI cars, esp with a roots style blower.
The CAI or Cold Air Intake [SLP, MSP or Thrasher] and FWI [ Fender Well Intake ] suck air from either the fender
or from behind the passenger side headlight..
Your right about the PCM making the car a bit more rich to fight KR which, btw, is a bandaid fix.. [GTPs are pig rich from factory at 54-56psi ] But the PCM does not add any more power [HP] by itself.
There was *supposedly* a 40 FWHP PCM [Mike Dye PCM] back in umm 1999 [yup I've been on ClubGP and owned two 3.8L GPs (GT and GTX) since '99]..
A Reprogrammed PCM, w/o pullies, rockers, headers etc, is only good for:
1) Fighting some KR [most stock GTPs see KR, esp during summer]
2) Turns the fans on at 180* temp
3) Crisp downshifts, and removes the 40mph *lag* on stock PCMs
4) Removes speed limiter
Check out http://www.intense-racing.com/ for more details on Re-programmed / Flashed PCMs.
There's absolutely NO way a GTP will run 13.1 with a 3.4", PCM, and U-bend..
The stock Intake is restrictive, yes. But a R/A hood does nothing for FI cars, esp with a roots style blower.
The CAI or Cold Air Intake [SLP, MSP or Thrasher] and FWI [ Fender Well Intake ] suck air from either the fender
or from behind the passenger side headlight.. Your right about the PCM making the car a bit more rich to fight KR which, btw, is a bandaid fix.. [GTPs are pig rich from factory at 54-56psi ] But the PCM does not add any more power [HP] by itself.
There was *supposedly* a 40 FWHP PCM [Mike Dye PCM] back in umm 1999 [yup I've been on ClubGP and owned two 3.8L GPs (GT and GTX) since '99]..
A Reprogrammed PCM, w/o pullies, rockers, headers etc, is only good for:
1) Fighting some KR [most stock GTPs see KR, esp during summer]
2) Turns the fans on at 180* temp
3) Crisp downshifts, and removes the 40mph *lag* on stock PCMs
4) Removes speed limiter
Check out http://www.intense-racing.com/ for more details on Re-programmed / Flashed PCMs.
11-01-2004, 01:35 PM
#32
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I would have to disagree with the fact that the Ram air doesn't make a diffrence probably not on a force fed motor but most certainly does with a N/A motor, more air always equals more power as long the fuel is increased as well. Granted not a huge increase but maybe some seat of the pants feel
