Originally Posted by Damien_C
Lmao, ehhh nah
If that was the case every race car in the world would be running a standard exhuast system
[.....]
I agree in part.... yes there are less restrictive exhaust systems out there but not much advantage under 5k rpm. If you get up to 5 or 6k rpm on a regular basis and dont mind the noise then there are gains.
Racing cars is a different story - if you were to replace your cams with racing cams and have a remap then you may start to be restricted by the gas flow, in and out. But then again, this is only if you can burn enough air/fuel quick enough, which is unlikely with the stock pressure regulator and injectors.