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tune issue

  1. Z

    Manual Sv6 Not Engine Braking/ Cutting Fuel off Throttle

    I have a series 1 manual VE sv6, have an otr, full exhaust (headers back), intake manifold spacer. Recently got dyno tuned. I have noticed that it still does not cut fuel off throttle (wasn't doing it before, hence one of the reasons for tune). During the Tune, I was told I may have an exhaust...
  2. Q

    ECM Tune Question

    Hoping to get some assistance.... Have a WM Caprice 6.0Lt that I did a AFM Lifter Delete and installed a stage 1 222-228 Camshaft. After the Cam install I had the car towed to a mechanic to ECM Tune the car. After he had the bloody car for 2 weeks he rang me and said he couldn't finish the...
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