Originally Posted by
Rollinz
I made 545bhp on std head with 1.8 n/a cams and 106gti springs,
I am on a gt35 turbo tho, and that was at 1.4 bar
When we tried for more boost we got to 1.7 bar and 586 bhp and then that was it,
Valve float and surge,
So thats there limit what i found
Found it.. XR2 Wishy also said good for 300-350