Shimming the Wastegate

[Isphius]

Get an apexi safc-II. It lets you change your fuel curves based on rpm. And the 91 octane shouod be ok for like 10 or 11 psi, But dont push it too hard. The lex afm/550s will help some with fuel cut, But there main purpose is so you can add more fuel. Eventually what you need is the lex afm, injectors, a greddy FCD, and an safc-II. But then you might as wel start modding everything else, etc. Its a neverending money pit lol.