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kg2hk · 12-06-1999, 10:27 AM

RedGTvert-

Upgrading exhaust doesn't make a difference on a 99 GT? I read somewhere that changing the mufflers alone to flowmasters increased rwhp by 10-15? Are these numbers not correct? How are you comming to the conclusion that upgrading to an X-Pipe and flows will not increase performance?
If you have done it and have numbers, let me know. I was planning on going with this combination and I don't want to waste my money if it's not going to do anything.

thanks

------------------
99 Laser Red GT
Mods: 70mm TB, Level 10 Chip, FMS 3.73's, Sean Hyland Speedo Recalibration kit, Pro 5.0 Shifter, & Pro-M 77mm MAF.
DynoJet: 242HP/286 Lb/ft
Best 1/4: 13.839@99.1MPH on radials.

12-06-1999, 10:27 AM	#5
kg2hk Registered Member Join Date: Oct 1999 Location: Stony Point. NY Posts: 18	RedGTvert- Upgrading exhaust doesn't make a difference on a 99 GT? I read somewhere that changing the mufflers alone to flowmasters increased rwhp by 10-15? Are these numbers not correct? How are you comming to the conclusion that upgrading to an X-Pipe and flows will not increase performance? If you have done it and have numbers, let me know. I was planning on going with this combination and I don't want to waste my money if it's not going to do anything. thanks ------------------ 99 Laser Red GT Mods: 70mm TB, Level 10 Chip, FMS 3.73's, Sean Hyland Speedo Recalibration kit, Pro 5.0 Shifter, & Pro-M 77mm MAF. DynoJet: 242HP/286 Lb/ft Best 1/4: 13.839@99.1MPH on radials.