MG ZR: Cams & Maps

[Piggy]

So, all this effort to try and beat a '6, while not beating a '6 yet....

and while looking like, well, a old man in a rover driver...

EFA

there isnt much flow difference between 80/100% open anyway with the butterfly, so makes sense that the high flowing engine doesnt want such a huge intake.

same with exhausts, too fat and you get good low down grunt, but tend to kill top end speed/power