Who has put an M90 on their 3.8?

bobbystang · #1 (**permalink**) 09-07-09, 07:02 PM

I just put an M90 on my DOHC cobra but i doesnt work right. I figured people that have done an M90 swap on a V-6 might know more about this than the SVT guys. The car starts but dies and makes vacuum instead of boost
thanks for your help.
bobbystang

onebadsixxx · #2 (**permalink**) 09-10-09, 08:01 AM

You probably have the pulley rotation on the s/c going in the opposite direction. Thats the first Ive heard someone making vacuum instead of boost. Go M112 instead if your gonna add an Eaton to a V8, youll get way more out of it.

**StangGT1995** · #3 (**permalink**) 09-10-09, 12:32 PM

You'll pull vacuum at idle. Once you go WOT, you'll make boost.