i disagree, people say mfi isnt good enought but before other managment came out you had to set up what you had. i built a zvh for a mate a good few years back, it was 1.8 block 0.5 off pistions new rings bearings standard head camed (cant remember what) good chip and t3 hybrid still on mfi run it in and started to play with bost 18+ psi later still going strong. before i get slated saying you cant do that it will melt etc etc. it didnt at the end off the day if you havent spent much cash on your build what have you got to lose