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Thread: Toooo Much Fuel HELP

  1. #1
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    Toooo Much Fuel HELP

    03 5.3, TSP BFD Cam .629"/.600" 108 LSA 105 ICL, 243 Heads, 8.1 injectors, Headers, Stall.

    I need some help, after getting the truck put together it is dumping a ton of raw fuel through the exhaust, like to the point it's dripping out. I've put a new pump, regulator and injectors in it and it's still the same problem. Attached is the tune file, I'm very new to this and have copied and researched off of tunes from my other big cam trucks. Hoping it's something that I've screwed up in the tune. Any help would be appreciated. Red RCSB.2.hpt

  2. #2
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    Do you have full GM data for the injectors?

  3. #3
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    Quote Originally Posted by gtstorey View Post
    Do you have full GM data for the injectors?
    30 lb/hr @ 43.5psi?

  4. #4
    Senior Tuner edcmat-l1's Avatar
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    You might wanna try tuning it. VE looks bone stock. I'm pretty sure 8.1 injectors aren't 20 lbs. per hr @ 58 PSI.

    IFR.jpg

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  5. #5
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    Quote Originally Posted by edcmat-l1 View Post
    You might wanna try tuning it. VE looks bone stock. I'm pretty sure 8.1 injectors aren't 20 lbs. per hr @ 58 PSI.

    IFR.jpg
    Sounds like a good idea. I appreciate it

  6. #6
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    Quote Originally Posted by redexpress View Post
    30 lb/hr @ 43.5psi?
    There are several things that need to be changed for fuel injector data, not just flow rate. Do you have a part number for the injector? If so, search in the GM forums and see if anyone has posted data for that part number.