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  1. Replies
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    Correct I have the 2016 sierra L83 6l80E took 2...

    Correct I have the 2016 sierra L83 6l80E took 2 credits. I would recommend you upgrade to the MPVI 2.
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    I just learned how to disable it from having a...

    I just learned how to disable it from having a misfire code. Haven't even looked at the throttle.
    Also how do you have yours wired? Just wired to brake pedal or inline switch?
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    so I have a new laptop(Dell I5 7000)and just got...

    so I have a new laptop(Dell I5 7000)and just got my MPVI2 a day ago. I tried to connect and it didn't work only once did it show the device at all. So I tried unplugging the usb from the laptop and...
  4. I had this happen also I re wrote the tune after...

    I had this happen also I re wrote the tune after I made sure battery was fully charged and was told to have the steering wheel straight and the truck level. something to do with its internal...
  5. Thread: L83 2 Step

    by 1slow1500
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    361

    Ok I have the answer. People run a manual on...

    Ok I have the answer.

    People run a manual on off switch to act like a master safety and use the brake pedal. Or then have a momentary switch. I like the to set it off the brake so I can launch...
  6. Thread: L83 2 Step

    by 1slow1500
    Replies
    5
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    361

    Sounds like for safety reasons the momentary...

    Sounds like for safety reasons the momentary switch is a good way to go. the msd has two inputs to activate the 2 step but you can only have one at a time hooked up. one is just a positive nad one is...
  7. Thread: L83 2 Step

    by 1slow1500
    Replies
    5
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    361

    zero no one has anything on this? Even shops say...

    zero no one has anything on this? Even shops say no idea or have to see it. I would rather learn. But no one has any info listed on this. Please help.
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    Ok so simple question, and yes I messaged Greg...

    Ok so simple question, and yes I messaged Greg already. Who knows how to tune the trans and also my 2 step? I would rather learn then go to shop but even the shops are all turning it away saying...
  9. Thread: L83 2 Step

    by 1slow1500
    Replies
    5
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    361

    L83 2 Step

    I installed the 2 step it is a MSD 87331. the instructions state to hook up the blue activation wire to the brake pedal.
    Are people just doing that or are they also installing a on/off switch in...
  10. I agree for the money if you are already at the...

    I agree for the money if you are already at the point of removing the intake just buy the injector and fuel lines. You can buy the stock or lt4 but if you buy lt4 injectors then buy the pump and that...
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    I glade I read this. I'm always concerned after a...

    I glade I read this. I'm always concerned after a hard pull that when I let off my wide band goes to max lean. If I tap the throttle is corrects. I thought air leak in down tube. or worst something...
  12. What spark plugs? And you mean the exhaust is...

    What spark plugs? And you mean the exhaust is firing? I have a truck 5.3L 76mm and been running 15.5psi all week. I'm at 12.0afr stock fuel. not popping or issues.
  13. Like to know more about that. My new system is a...

    Like to know more about that. My new system is a boost activated switch but it just uses a heavy duty relay for power. It is a return system with a reference regulator as well.

    I also looked at...
  14. Every system I have seen are a 2nd fuel system...

    Every system I have seen are a 2nd fuel system that tapes into the factory line and ups the feed. I see most are external pumps. But I heard the Armageddon is a 465lph internal, but haven't looked...
  15. I have not had issues like you mentioned with...

    I have not had issues like you mentioned with mine but I would never recommend the oil pump, even the idea freaks me out. drain tube is easier and about free of a failure.
    Anyways as long as you...
  16. Ok same kit I have the LT4 injectors and HPFP are...

    Ok same kit I have the LT4 injectors and HPFP are cheap. I think you are thinking the HiFlo injectors and pump that sell for 5K. you don't have to have a cam and there are also shimming of the fuel...
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    I set it for something like 300-400* and...

    I set it for something like 300-400* and 1000lb-ft and it still works but rolls my 33" around a few times before kicking in. i have not tried a higher value in the max torque box. I just turn the...
  18. There are a few here that can do that but I will...

    There are a few here that can do that but I will let them speak for themselves. I thing you will have issues over 550 with the stock fuel. You can upgrade for a reasonable price to the lt4 HPFP and...
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    yes you can. I have just simply changed the TC...

    yes you can. I have just simply changed the TC fields to some value that is impossible. It still works with tc on but is super slow to correct. It spins the tires 1-2 times then slowly stops it. I...
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    Agree I just ordered mine but don't know if it is...

    Agree I just ordered mine but don't know if it is worth it on a turbo truck. I figure the throttle body being bigger helps but the manifold size make that much of a difference? I wanted to know if...
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    Mine are so changed that that the tires spin 3-4...

    Mine are so changed that that the tires spin 3-4 times before tcc kicks in.
  22. I agree on the fuel system not benefiting. and...

    I agree on the fuel system not benefiting. and also with AFR and timing. Didn't know about the 20-25minutes. VERY good to know.

    I would like to know how much the stock l83 can handle. I can't see...
  23. I thought the best "gain" was it the trans in...

    I thought the best "gain" was it the trans in these trucks. If you are asking hp/torque then that is another story. But the trucks I drove that the trans was tuned move out. I left my trans untouched...
  24. I have not heard of this but I'm far from a...

    I have not heard of this but I'm far from a authority of knowledge. I can tell you my l83 is at 13psi of boost and AFR is still 11.8. I'm told the block rods will let go at the 650rwhp mark. So I'm...
  25. I was going to do the same 2016 5.3l with a turbo...

    I was going to do the same 2016 5.3l with a turbo wanted more fuel. Interested to know.
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