Who has put an M90 on their 3.8?

Discussion in '94-04 V6 Mustang' started by bobbystang, Sep 8, 2009.

  1. bobbystang New Member

    Member Since:
    Dec 25, 2008
    Message Count:
    9
    Likes Received:
    0
    Trophy Points:
    0
    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
    bobbystang, Sep 8, 2009
    #1

  2. onebadsixxx New Member

    Member Since:
    Jul 13, 2009
    Message Count:
    21
    Likes Received:
    0
    Trophy Points:
    1
    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.
    onebadsixxx, Sep 10, 2009
    #2

  3. StangGT1995 have car, will race....wait, it doesn't run

    Member Since:
    Oct 23, 2004
    Message Count:
    5,294
    Likes Received:
    3
    Trophy Points:
    88
    You'll pull vacuum at idle. Once you go WOT, you'll make boost.
    StangGT1995, Sep 10, 2009
    #3

Share This Page