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Almost done wit crutch set up

Discussion in 'General Carb Tech' started by PINYTURBO, Oct 4, 2012.

  1. PINYTURBO

    Joined:
    Jun 27, 2009
    Owned my 92 notchback for about 6-7 years now and have changed it around so many time that it aint funny! Car is sbf with a 76 mm turbo . My most recent change is i went to the dark side and junked all the efi stuff and went with brents crutch setup... Setup is completely done , car starts up wit no problems wats so ever love it. Now to start the tuning process !!!! Timing is locked out at 32* rest of timimg will be controlled through laptop and msd 6530 programmable. Car starts on the money but idles wit afr at 12.0- 12-3 and im told i should be at high 13's . Where to start ? All help will be appreciated...
     
    PINYTURBO, Oct 4, 2012
    #1

  2. cat herder

    Joined:
    Jan 4, 2008
    Correct idle AFR is the one where it idles best, just like in ye olde days... adjust for highest vacuum/RPM, then check the number on the WB.
     
    cat herder, Oct 4, 2012
    #2

  3. louich

    Joined:
    Oct 8, 2008
    big cams affect a/f at idle a fair bit you will get a lot cleaner idles out of a small cam with lots of vacuum. mines low 13s for best idle
     
    louich, Oct 24, 2012
    #3
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