Blue shadow
TY 4 Stroke Guru
No not realy ,just slower on the start off.The first year with the cpr 2554 turbo I ran two head gaskets and stock timing .When you change to two head gaskets you have to change the cam lob centers to put it back in the stock position.I would not run over 10 psi on 91 oct.Ave gas 15 to 16 psi and you are safe.If you go higher then there is a chance you will dito on # 1 cly.I have a bigger set up now so I can run more boost with engine mods done .Running 112 oct racing fuel and meth to be safe .
