Thread: Cutting out under boost/heavy load.

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  1. #1 Cutting out under boost/heavy load. 
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    Im turboed now btw.
    97 cavalier with L67 swap. F23 Getrag trans with stage 3+ SPEC clutch, KB pistons, L32 rods, LS6 valve springs, 3.4 pulley, ZZP downpipe 2.5, Full rotating assembly balance.
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  2. #2 Re: Cutting out under boost/heavy load. 
    Killa Bee Scottydoggs's Avatar
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    got a wideband in the car?

    did this just start happening? or has it been a issue since your build was finished?

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: Cutting out under boost/heavy load. 
    Killa Bee Scottydoggs's Avatar
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    you deleted the whole first post there. so no one knows whats up any more lol

    turbo or not, same questions.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  4. #4 Re: Cutting out under boost/heavy load. 
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    Not sure what happened to original post but im turbo now. Started when I upped boost over 10psi.
    97 cavalier with L67 swap. F23 Getrag trans with stage 3+ SPEC clutch, KB pistons, L32 rods, LS6 valve springs, 3.4 pulley, ZZP downpipe 2.5, Full rotating assembly balance.
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  5. #5 Re: Cutting out under boost/heavy load. 
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    I just bought the LQ4 maf to put in because the MAF was running almost past 11500HZ. Possible spark gap issue im also wondering. Blowing the spark out?
    97 cavalier with L67 swap. F23 Getrag trans with stage 3+ SPEC clutch, KB pistons, L32 rods, LS6 valve springs, 3.4 pulley, ZZP downpipe 2.5, Full rotating assembly balance.
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  6. #6 Re: Cutting out under boost/heavy load. 
    Killa Bee Scottydoggs's Avatar
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    got a wide band in the car ill ask again? fuel pump upgrade? injector upgrade? if not theres the problem. the maf file the right one? hows the trims?

    see why you need a wb yet if you dont have one?

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  7. #7 Re: Cutting out under boost/heavy load. 
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    Have wide band, fuel pump upgraded and #60 injectors. Its in the 11.2 11.5 range when this is happening.
    97 cavalier with L67 swap. F23 Getrag trans with stage 3+ SPEC clutch, KB pistons, L32 rods, LS6 valve springs, 3.4 pulley, ZZP downpipe 2.5, Full rotating assembly balance.
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  8. #8 Re: Cutting out under boost/heavy load. 
    GrandPrix Junkie SgtMarshal's Avatar
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    what spark plugs are you running? might need a colder plug?
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  9. #9 Re: Cutting out under boost/heavy load. 
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    Im running the TR6 at factory gap
    97 cavalier with L67 swap. F23 Getrag trans with stage 3+ SPEC clutch, KB pistons, L32 rods, LS6 valve springs, 3.4 pulley, ZZP downpipe 2.5, Full rotating assembly balance.
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  10. #10 Re: Cutting out under boost/heavy load. 
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    I recommend trying a colder plug at a smaller gap like .045. factory gap is huge.
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  11. #11 Re: Cutting out under boost/heavy load. 
    Killa Bee Scottydoggs's Avatar
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    try gaping them at 0.52

    when was your last tune up? id try some AL copper 103's or 104's. less then 15 bucks most of the time.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  12. #12 Re: Cutting out under boost/heavy load. 
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    What?! .052 you mean
    97 cavalier with L67 swap. F23 Getrag trans with stage 3+ SPEC clutch, KB pistons, L32 rods, LS6 valve springs, 3.4 pulley, ZZP downpipe 2.5, Full rotating assembly balance.
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  13. #13 Re: Cutting out under boost/heavy load. 
    Killa Bee Scottydoggs's Avatar
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    220-221, what ever it takes lol

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  14. #14 Re: Cutting out under boost/heavy load. 
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    If you're maxing our your MAF it'll feel like an ignition problem, but it's not. I had the same problem with my Turbo T a few years back. I put an LS1 MAF and a translator (gotta love the old OBD1 ECMs) on it and no more cutting out over 10 psi. I eventually ran 18 psi in that car on the stock turbo. That was about all the stocker had in it. It was still pretty fast though.
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