2jz vvti turbo question

WonIt

Air ,Fuel ,Spark!
Feb 26, 2006
175
0
16
Front Royal,VA
Hello all, I finally put my 89' back on the road. Man is it slow. Long story short. I blew the stock twins,so I went single. I went with a hx35 with external wastegate. My question is this. Would I make less power at 8psi than I would with the stock twins at stock boost?

If I remember correctly those were boosting to 10-12psi. The car seems to be noticably slower. I have checked for boost leaks and whatnot. Boost comes on around 3k rpm. I have full exhaust,bfmic.that's pretty much it. What y'all think?