The PCM should pick up the fuel curves in time. I might consider not even running the afc for now, or not that high. Let the PCM pick up what it can, then tune the controller for what'* left.

thanks for info , I never knew it would be so hard to get the right computer chip to run.
Just for referance the n/a chip makes it sound like it has a massive cam in it!
the exhaust is alot quieter now.

New boost (well differant one) did not fix problem. I noticed with factory chip it idles higher so the vaccum is higher app 18-20lbs, wiht axdk(na chip) it idles around 6-700 with vaccum of 10lbs.
when I install the correct chip and it trys to idle down it gets very lean and will not idle down , but as it trys to idle down I notice the vaccum tries to drop lower aswell......just cant drop low enough till it is too lean to run.