Well haven't finished buying stuff to go turbo but I did buy and install other stuff still using m90
XP Cam
39lb cobra Injecters
Crow 105lb springs
ZZP Modded Retainers
Viton Valve Seals
3.3 Pulley
Hp Tuners Pro
NGK AFX Wideband
All that pretty much put a dent in the turbo build lol here is a idle video with open downpipe