I have a 2005 I6 in a '56 chevy truck so no BCM to worry about.

I don't want to get a new engine. The turbo I have is a GT4288 and capable of 6-650 at the wheels which I intend to do.

Strictly as a swap ECU/tuning aspect. How much boost will a P12 take?

I realize to boost on the P10 I'd run a 2 bar or whatever size MAP and half the tables. But this still won't work real well I suppose because of how the VE table works. I may try it anyways.

I really don't want a MAF as MAF on boosted application usually suck and even on my N/A ls I threw it away and run SD.

So lets say I P12 swap and run a 3 bar map what problems should I expect? I say 3 bar because I expect to need about 20psi to get my power goals. Can P12 even be run in SD?

If P12 can't do it and I need to change a few parts to run E67, will E67 run 3 bar?

Thanks.