lets race!

[Midnightclub]

I know about back pressure I'm not stupid, I'm sorry but a sportex system is still the same diameter as the standard system just less boxes and baffles, it isn't going to reduce back pressure THAT much to reduce the torque that it would entirely change the performance... I should know I've got one and it definitely made a difference (and no it's not just placebo because of the noise), if anything because OPs engine is cammed it would be expelling more gas at higher rpms meaning the exhaust should be aiding performance if anything.

Agreed about the torque though, mine won't spin in anything other than first unless it's wet.. but if anything I prefer the lower progressive torque for cornering, it makes the car much more controllable imo

Edit: guess it also depends whether ops car has been mapped for the cams and where the peak torque now is