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Thread: Which ECM / OS would you use??

  1. #1
    Potential Tuner
    Join Date
    Apr 2006
    Posts
    5

    Which ECM / OS would you use??

    Currently in the process of putting a 5.3 / 4l60e into my Jeep. Cable TB for simplicity. Are there any advantages to running a particular ECM or OS?

    I don't have an ECM yet. I'm thinking that I'd like to use a 04 GTO setup so I can play with the LC function and maybe eek out an extra mpg or two.

    Any do's or don'ts I should look out for?

    What would you use?

    Thanks
    2005 MBM GTO M6
    LPE GT2-3 LPE CAI, LC-1 / HPT

  2. #2
    Advanced Tuner 69lt1bird's Avatar
    Join Date
    Oct 2007
    Posts
    983
    What year 5.3L?
    Free HP Tuners Beginners Tuning Guide

    LS1 Tuning Guide
    Michigan Snowmobiler

    1969 Firebird: 11.67@114 [email protected] 1/8 1.70 60 ft. EPS cam 234/246 .602.606 114+3, 6.0 LQ4, L92 heads milled 10.5:1, Ported L76 intake, ported 90mm Holley TB, 100mm MAF, FIC Custom injectors, Hooker LT, PYPES dual exhaust with an X pipe, 4L65e with all of the good parts inside, FTI 4000 RPM Stall, 12 bolt with 3.73 gears. HP Tuner tuned by me