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Thread: A little add on for Rtacs COS5?

  1. #11
    Lifetime Member Doc's Avatar
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    Oct 2005
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    Taz,
    Why not just migrate what pertinent settings you have from your 01 cal into a 02 12212156 ZO6 cal and then migrate to COS 05? Well worth it brother.

    2000 Silverado Full Size 4x4: Forged 6.2, H/C F1R Procharger
    98A4 Z28: 02 PCM H/C Forged 347, 9" Moser 3.73
    V1 V2 99+up RR COS #5 OLSD Dual Stg N20
    www.efialchemy.com
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  2. #12
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    For a non boosted car or non n2o.. i am not so sure... you have to retune the vehicle every once in a while... my fater's z06 just gets wacked away after a while needing a refinement. I bought a new maf sensor (it wasn't reading correctly) and a new set of O2 sensors.. hopefully 1) if i keep COS5 and SD I will use the STFT... but most probably i will use the regular os with the VE tune dialed in... then tune the maf...

    Anyways.. weather changes here DRAMATICALLY over a few hours.. from 100F days to 75F nights... rain.. humidity... oh.. what not...
    "All that is needed for the triumph of evil is that good men do nothing..."

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