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Thread: B5 S4 UNITRONIC stage 1. stutters at high RPM's and throws boost back alittle

  1. mnajjar
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    B5 S4 UNITRONIC stage 1. stutters at high RPM's and throws boost back alittle

    10-05-2012 11:12 PM #1
    recently got stage 1 unitronic. it drives normal. at high rpm's when im hitting it hard it stutters a couple of times and doesnt give full acceleration and boost. i just changed spark plugs and maf is clean.
    WHAT IS WRONG?!?!?!
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  3. mnajjar
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    AND

    10-05-2012 11:14 PM #2
    it also does not misfire. i dont have any codes. AND when its idling, the car has a small shake to it. the RPM moves ALITTLE unstabily
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