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why has my car started surging

Discussion in 'A4/S4 forum(B5 Chassis)' started by mac1403, Oct 8, 2005.

  1. mac1403
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    mac1403 Member

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    [Oct 8, 2005]
    I was wondering why my car has started surging. Not too long ago I had a Milltek exhaust fitted but have just noticed that if i am at low RPM and I accelerate hard in a high gear like 3rd....as the car reaches maximum boost it surges where boost drops in and out. My car is remapped by AMD so the boost is at about 15-16 PSI....as the boost drops in and out so does the power and the needle on the boost gauge flicks up and down. Any ideas would be greatly appreciated..
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