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engine braking

  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...
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