Just out of interest really as my s1 has one and i just wanted to know whats changed to make it all work ? are the pistons changed ? would you have to change the fuling ? it is running mfi to, would it be chipped ? whats the safest amount of boost to run on a forged set up ? sorry for all the questions

 

if it's got a forged bottom end then there's no real cap on the amount of boost you can run that'll be more down to what your turbo is capable off and what fuel the mfi can supply, i persume it'll be chipped as it would only run to 10psi then hit the boost cut limit and as you probably know it's a zetec bottom end mated to a cvh head