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Anyone have a problem with Loudmouth Exhaust

This is a discussion on Anyone have a problem with Loudmouth Exhaust within the External Engine forums, part of the LSx Technical Help Section category; I have had my Loudmouth exhaust on for about a year now and all of a sudden i notice a ...

  1. #1
    #587 pipes_ta's Avatar
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    Anyone have a problem with Loudmouth Exhaust

    I have had my Loudmouth exhaust on for about a year now and all of a sudden i notice a back fire when i let off the acceleration. Could there be a problem else where. I was thinking it could be becuase i lack backpressure thanks

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    MOTOR CITY MARO' SSTODD's Avatar
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    LM1 or LM2??? I thought most LM1's do this.

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    Pathelogical Liar BlackLT1Z28's Avatar
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    That sounds normal. Mine did that only when I'd get on it good, then let off though. Under normal acceleration, it didn't do that, but under hard acceleration, it did. Its just blow-by from the higher revs. If it pops a little, nothing to really worry about.

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    ^^^ Sounds like a normal back pressure pop...

  5. #5
    #587 pipes_ta's Avatar
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    Yea i know its normal but its doing it at about 2000 rpms

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