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  1. Thread: 16 gt350 tuner

    by GMCfast
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    4
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    2,879

    16 gt350 tuner

    Well I just bought a 16 gt350 mustang. Traded in my lt4 superchargered truck for it. I have my mpvi2 pro I would like to use on my new mustang and update the factory tune on my new 5.2 voodoo v8. I...
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    Do you have the wire going to the ecm to get the...

    Do you have the wire going to the ecm to get the alcohol percentage pid?
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    1,289

    sorry for re-post. I'll request deletion

    sorry for re-post. I'll request deletion
  4. Replies
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    1,289

    Delete

    delete. Found info.
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    1,454

    So you pulled the codes and COT was the only...

    So you pulled the codes and COT was the only code? Usually reduced power mode will be accompanied by a CEL. Since its on before you start the car seems like a sensor is failing its diagnostic test.
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    So your maxing out the lt4 injectors and pump?...

    So your maxing out the lt4 injectors and pump? Did you upgrade the low side in tank?
  7. Me and Ben have been working on my lt4 setup and...

    Me and Ben have been working on my lt4 setup and I had a vac leak as well that caused the same issue turned out i missed the little nipple below the actuator. I was going to use it for boost gauge...
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    So you don't want to edit your math. Go to graphs...

    So you don't want to edit your math. Go to graphs layout and then your speed density graph and under filtering that's where you would put the new filter.
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    I'm guessing you have a 18? Or later? Seems to be...

    I'm guessing you have a 18? Or later? Seems to be the only ones you can't disable stft in the tune but you can in the scanner. Im guessing a new one to add to the list is you can't fail the maf. I...
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    Does the maf have IAT builtin? If so wont work...

    Does the maf have IAT builtin? If so wont work you will go into limp mode.

    Edit: I see you supercharged so I assume you have breakout harness. That's all the correct steps. Just drive around and...
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    Thanks so much! I'll give it a shot in tomorrow!

    Thanks so much! I'll give it a shot in tomorrow!
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    tried to tune on speed density

    I tried tuning my l83 truck today with speed density and failed horribly at it and gave up. Here is the issue I was having. Anytime I let off the throttle the wb would read super lean and no longer...
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    Pistons and rods will be safe at low boost levels...

    Pistons and rods will be safe at low boost levels from what I've read. The stock fuel system can support 500hp ive been told but if your running e85 your likely to run out of injector/fuel pump
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    In hp tuner there's a way to adjust idle with AC...

    In hp tuner there's a way to adjust idle with AC on. Under engine>idle>base idle

    Open that table and you will see the idle settings with AC on in gear and in park.
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    there are several people on here who sell custom...

    there are several people on here who sell custom tunes. With it being a basically stock truck they won't charge much. Search button will help you decide who to choose.
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    Did you make the tune changes for the cam?

    Did you make the tune changes for the cam?
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    It doesn't work on 18 sierra either. Have to do...

    It doesn't work on 18 sierra either. Have to do it in the scanner everytime you start the vehicle. Command closed loop off.
  18. A few people on the forums will tune your truck...

    A few people on the forums will tune your truck for a price. If your looking to do all the tuning yourself you better start searching the forums and reading alot.
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    May have better luck on performancetrucks.net or...

    May have better luck on performancetrucks.net or ls1tech.com getting a answer in regards to a vehicle specific swap
  20. They may have disabled flex fuel because you...

    They may have disabled flex fuel because you didn't pay them to tune on e85. Most companies charge more for e85 tune on top of pump gas tune
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    I'm going to try making adjustments using...

    I'm going to try making adjustments using narrowband and see if it makes the STFT correction percentage smaller.
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    When you turn on STFT does it show a correction...

    When you turn on STFT does it show a correction percentage close to 0?
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    This is on a 18 gmc 5.3. I used the maf error...

    This is on a 18 gmc 5.3. I used the maf error graph and applied it to the maf frequency table by multiplying by half.
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    MAF tuning ruined!?

    why is that when I get my maf dialed in within +/- 1% and turn the STFT back on, the STFT's percentage jumps to 20-30%?

    When i was done tuning my wideband was constant .990 to 1.000 lambda then...
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    Thanks I found this

    Thanks I found this
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