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removal of cats and ignition problems

This is a discussion on removal of cats and ignition problems within the External Engine forums, part of the LSx Technical Help Section category; have any of you heard of taking the cats off and having trouble starting your car. i put slp headers ...

  1. #1
    LS1 BITCHES
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    midnight blue
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    removal of cats and ignition problems

    have any of you heard of taking the cats off and having trouble starting your car. i put slp headers on and took off my cats 2 months ago. now it just started not starting on the first crank but it fires perfect on the second. a mechanic told me it was bc there is not enough back pressure. is he full of shit.

  2. #2
    SUPREME member-oderator oneBADDz's Avatar
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    very full of it. there are more than a few of us running that way and we never have any problems. lack of backpressure isn't gonna stop it from running, you have a problem somewhere else

  3. #3
    LS1 BITCHES
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    midnight blue
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    it runs but it takes two cranks to do so. what the hell could it be though. the second crank fires perfectly.

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    SUPREME member-oderator oneBADDz's Avatar
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    I can't even pretent to know what the problem could actually be. Backpressure is a topic that gets beat to death between old school and newschool though

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    We'll be back... GatorSS's Avatar
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    Sounds like a fuel issue. Try this: Turn your ignition switch to the "on" position and wait for several seconds (or just let it beep five times) before turning it to start. If it starts immediately, then likely it's a fuel supply issue.

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    vert 00vertss's Avatar
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    Quote Originally Posted by GatorSS
    Sounds like a fuel issue. Try this: Turn your ignition switch to the "on" position and wait for several seconds (or just let it beep five times) before turning it to start. If it starts immediately, then likely it's a fuel supply issue.

    agree probably fuel pump not having enough time to prime.

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