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Thread: swap 305 vortec to 350 vortec

  1. #11
    Join Date
    Sep 2005
    Location
    Dallas, Tx
    Posts
    27
    If Sims arent available you can also have the sensor monitoring tuned out of the PCM. Sims are the better way to go though for emmissions legality as far as the OBDII tests are concerned.

    Shane
    1996 GMC Yukon 4x4 4-Door. Bone Stock for now. Need Moneys.

  2. #12
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    If you disable the rear O2s in the PCM it will pass the electronic test just as if you had sims in place.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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