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  • basic lean/rich q

    ok i heard that if u remove the cat and add headers it leans out the car (or i heard that at the LS1 page, so im assuming it works for us) now i also heard that adding a lower tstat would richen up the car, so in theory wouldnt they cancel each other out (no cat + 160 tstat) or am i imagining things
    98 Jeep Grand Cherokee 5.9 Limited<br /><br /><br />MODS:<br />180* t-stat, K&N FIPK, mopar ECU,<br />mike leach long tube headers+3\" y-pipe, 3\" all the way out flowmaster 50 series, mopar magnum 2bbl m1 intake manifold, APS 52mm throttle body, powerslots, 2 JL 10w3\'s

  • #2
    The PCM should correct for the lower back pressure by itself. So, unless you have a lean condition after making the modifications, you probably don't have to worry about correcting it.
    <a href=\"http://www.fatninjas.com/camaro\" target=\"_blank\">\'96 Camaro Convertible</a>

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