lets race!

[Ed Doe]

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

you've just massively contradicted yourself.

you've said you understand back-pressure, yet you've said the car should definitely pull better if it's cammed and the exhaust is then made less restrictive... make your mind up!!
If the exhaust flows better at higher rpms, it WILL be having an effect on back-pressure.

Back-pressure marginally improves low & mid-range, at the expense of a tiny bit of top-end. the area under the power graph is unlikely to alter massively, hence you wont really accelerate any faster in-gear, but real-world when you drive it harder you'll probably benefit from the increased power top-end.

If the car has been cammed, it will be heavily dependant on how it's been built. Most '6s can't get enough advance on anything more than the mildest cams without having to pocket the pistons. Retarding the timing increases mid-range at the expense of top-end.
If he's had the car cammed with a more restrictive exhaust, it will probably have better mid-range with the cams too, so putting a scaffold pipe (sorry, Sportex) on will have the effect of removing the back-pressure which will be aiding mid-range...


but were straying dangerously off topic here.....




Your matez accord haz way more powerz than your '6, a bigger engine, and will be quicker.........