Turbo Techics did a kit for the I4 DOHC.
This used standard internals and produced roughly 173BHP nearly 50 over standard.
My 250TT Sierra has very minor mods to the heads to slightly lower compression and that's 100BHP over standard.
So it is possible and will work fine.
The big problems come from Bleed valves and HUGE turbos.
TT
|