Quote:
Originally Posted by Holset
Nice to know and your exhausts sound good.
My Awe has some drone/rasp resonance around 2000rpm but thats just noticeably when slow accelerating.
Don’t now if different exhaust setups does anything to make power on our cars.
But i have read that for best exhaust scavenging/power two separated pipes is the worst then comes H pipe then X pipe and best is a Y pipe (two into one).
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Yes, that is true on N/A cars where the x pipe will produce more of a scavenging effect and will help top end power while the H pipe will help with lower end torque. On a turbo car though the exhaust is flowing out the turbo and its not in the same type of pulse pattern that would benefit from an x pipe. Technically an x pipe would be a restriction and turbos hate restrictions. The addition of the H pipe would only be for acoustics.
End of the day I don't think there will be much of a difference in power between the two but compared to stock exhaust we are using more 80mm piping than oem which will certainly help with flow.