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headers installed longtube! Popping problem

This is a discussion on headers installed longtube! Popping problem within the General Help forums, part of the LSx Technical Help Section category; Whenever I release the clutch on regular acceleration it does not pop but when I get on it in first ...

  1. #1
    Junior Member
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    black
    2000 trans am firehawk

    headers installed longtube! Popping problem

    Whenever I release the clutch on regular acceleration it does not pop but when I get on it in first gear it pops and sounds like something is not right underneath. Also the engine just doesn't seem right I know it will sound different with headers but this is weird. Nothing was done to upset the drivetrain. I put 1 3/4 pacesetter headers on my car, 2000 firehawk. If anyone can help I would appreciate it.

  2. #2
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    Are you throwing any codes? Did you happen to chip any of your plugs while instailing? Wires look good? Do you have any leaks? What exhaust are you running?
    J
    2001 SS, Its not the car its the Driver that matters....

  3. #3
    The Bandit Wesman's Avatar
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    SGM
    1998 Trans Am WS6

    Sounds like you might have an exhaust leak between where the cylinder head meets the header. Does the "popping" sound almost like a Harley?? Check to make sure the seal between the header and the head are good, if there is a slight gap or the gasket blew out, it will run like crap and sound like a 2 stroke.

  4. #4
    Junior Member
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    black
    2000 trans am firehawk

    I'm pretty sure that the header isn't leaking at the head I read the post on projecttransam.com about the AIR pipes and restricting the flow. According to that tech article the exhaust flutter eventually ruins the check valves? I think the new 3" y-pipe is rubbing against some part of the body or the driveshaft. It seems like when the car begins to accelerate and the body shifts it sounds like the y-pipe is rubbing a moving part which could only be the driveshaft! At any rate I'm taking it back to the exhaust shop tomorrow. I have 3" Borla catback.

  5. #5
    Compulsive F bomb dropper sgt0704's Avatar
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    silver
    1998 Z28

    i don't know. i thought it was normal. hell, my 98 Z does that now with a complete stock exhaust. maybe it's just pressure that give is the popping sound. kinda like a backfire, only not really.

    my 91 rs did it too with the shorties and 3" flowmaster..

  6. #6
    Senior Member slims00ls1z28's Avatar
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    2005 GTO M6 Black
    2000 Z28 A4 Red

    Sounds more like a cracked or chipped plug especially if its under acceleration. Pull em all and check them.

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