How much of the lost bottom end are you attributing to the substantial drop in compression?? It might have given you a better idea of what was causing it if you installed the larger turbo and then swapped heads, but I cant wait and do things in steps either.
Has your timing remained constant or have you had it totally retuned???
Im still waiting to get the OK for the HPTuners since I went a little over budget with the new laptop, alcohol, and some other things .
Keep us posted on what you find out.

 

It was retuned because of the different characteristics of the bigger turbo.

 

I know someone who want's to swap the truck intake for the F-body/C5 intake for more upper RPM power,what all would need to be done for it to work? Thank's,

Carter