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  • unknown backfire PLEASE HELP!!!

    I have had a problem with a backfire in my 99 has done this three different times with two different computers. Each time it sounds and feels like speed bump at 20 mph and bottomed out the car. the it will not start for at least 20 minutes.

    I have put on headers with a small leak at egr, cai, descreened maf, air intake lid definned, and pcm for less pcm.

    I have no idea what is wrong with this so any help would be greatly appreciated.

    Thank you!

  • #2
    Re: unknown backfire PLEASE HELP!!!

    you can start by putting the screen back on your maf...since you kinda need that...do you have an AFR gauge? sounds like your going rich as piss and flooding the motor?

    2002 SOM Z28 Camaro - 12.9 @ 104 mph
    1996 3800 Camaro - 13.43 @ 100.77 mph


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    • #3
      Re: unknown backfire PLEASE HELP!!!

      Dude if your piss is rich... do you **** Thor instead of lightning?

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      • #4
        Re: unknown backfire PLEASE HELP!!!

        Originally posted by Docta View Post
        Dude if your piss is rich... do you **** Thor instead of lightning?
        . Ride beat me to it, does sound like you may be running rich.
        3M MAFIA
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        • #5
          Re: unknown backfire PLEASE HELP!!!

          Yeah, if you take out the screen it can give your MAF some false reading.

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          • #6
            Re: unknown backfire PLEASE HELP!!!

            call PCMforless. Did they tune for all your mods and descreened maf?

            Id throw it back on and send it out and tell them its screened. Really cna only get away with that if you are on a dynotune and even then i wouldnt.

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