tlowe,
I forgot when you had boost controll issues, what finally cured that?
A larger turbine housing,milling the devider on the SPA manifold?

What is the cam specs you are using?

Have you had any detonation?

What converter stall are you looking at?

The only engine I can somewhat compare to as far as turbocharged is dynoing my 4.3 V-6 Chevy.

The turbo was smaller than yours,the heads flow worse than the stock chevy inline head.
Cam is about 175 degrees degrees duration @ .050 & .370 lift or there abouts, really weak.

Stock, they made 280 HP @ the engine & 360 ft lbs of torque,w/14 PSI of boost pressure.

I had done a chip,catback exhaust,little tweaks to the turbo,K&N cold air kit,Aquamist alky injection. Total timeing is about 22-24 degree total.

As stated before I made 386 HP @ 4500 RPM & 550 ft lbs torque @ 3000 RPM I also was running 21 PSI of boost pressure.

This figure was using the dynopack dyno, the one that bolts directly to your wheel hubs.

My A/F ratio was 13 or there abouts, (a little lean)

MBHD


12 port SDS EFI