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Thread: Exhaust pops under acceleration.

  1. #21

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    So I uploaded a known to be good Global File from last year. Still doing the same thing. Could it be possible that this is "normal" with the way my exhaust is run? I'll take a short video and try to post it here, if that's possible.

  2. #22
    Join Date
    Jan 2010
    Location
    Brisbane, Australia
    Posts
    1,446

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    Quote Originally Posted by Gaz64 View Post
    I can't see an exhaust system change causing this issue. But also, why would a tuning issue cause this? Have you had the spark plugs out for inspection?
    I don't think "normal" comes into it after an exhaust change.
    Regards, Gary

  3. #23

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    So I have a strange update, wish I could post the videos I took. I mounted the camera in the car, on the rear bumper, and under the car near the mufflers. Watching the videos in the car you can clearly hear the popping/backfiring, like something is wrong. The videos from outside the car (bumper & under car) have NO unusual sounds! Made about half a dozen videos, all are the same & consistent.

    I was NOT expecting this, it appears to be some sort of acoustic vibration that's getting amplified inside the car. If I can't hear it at either tailpipe, my only conclusion is that there's nothing wrong with the engine or tune, right? I'm a little embarrassed, but I'll try some sound deadening.

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