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Injector question

This is a discussion on Injector question within the External Engine forums, part of the LSx Technical Help Section category; I have a set of Siemens 38# injectors awaiting install. I heard that installing injectors that much bigger than my ...

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

    Injector question

    I have a set of Siemens 38# injectors awaiting install. I heard that installing injectors that much bigger than my stockers is a bad idea because it will be dumping too much gas. I live about 60 miles from my local tuner and could install them in the parking lot the day I get it tuned but I'd rather do it at the house and drive it there if possible. So basically will it be alright to do it at home or just wait and do it in the parking lot?

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    Pathelogical Liar BlackLT1Z28's Avatar
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    Yeah, you'll pretty much flood the engine with bigger injectors like that on a stock tune. Because the computer will keep the same pulse width and rail pressure on the bigger injectors, therefore, dumping un-need fuel in the cylinders.

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    Senior Member bills98ta's Avatar
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    It won't run without the tune... I tried it with 30lb'ers, can't imagine how much fuel you will be dumping !!! It only takes 1/2 hour to change them. Good Luck !

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    Senior Member slims00ls1z28's Avatar
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    Quote Originally Posted by bills98ta View Post
    It only takes 1/2 hour to change them. Good Luck !
    True but changing them in 100+ degree weather in the sun on blacktop vs in the shade of my carport was the advantage I was hoping for. Oh well guess I better just bring some gatorade and sunscreen

  5. #5
    Senior Member bills98ta's Avatar
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    Bring some oil along too, for the O-rings. So they slide right in !
    Maybe two gatorades !!! LOL !!!

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