Quote:
Originally Posted by Dimman
The cams and exhaust acoustics are inter-related. So there is a chance that alternative headers can sort out the dip. We may only need AVCS control rather than replacement cams.
|
I think it would be more intake header dependent, no? Doesn't matter how good your exhaust scavenging is if the intake acoustics don't match. Would probably need AVCS adjustment along with fuel/ignition to suit the new volumetric efficiency local max, and turn down the intake cam advance in the previous local max torque range since scavenging efficiency has been reduced there.