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  1. Replies
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    10,861

    Does anyone have any ideas? We are dead in the...

    Does anyone have any ideas? We are dead in the water over this issue. Why won't EFILive display parameters?
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    10,861

    2019 L96 E78 Unable to see any tables

    I just read this ecm with V8.0 and when I edit it says to use V7.5. When I open it (after updating 7.5) I dont see anything to edit.

    Also, this came from a Isuzu NPR. Does it have VATS? This is an...
  3. Replies
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    3,312

    The engine is basically a ls1 dbc but with lt1...

    The engine is basically a ls1 dbc but with lt1 components. Just not sure how different they flow, if sensors are different (iac, knocks, etc) and need to be altered....
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    3,312

    Express van isn’t coil per cylinder right?

    Express van isn’t coil per cylinder right?
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    3,312

    Lt1 24x conversion base tune?

    What’s a good starting point to making a base tune? Stock 95 lt1 with EFI connection 24x kit. Custom harness with ls ckp and cmp, lt1 map, ls1 maf and iat, lt1 iac and tps. Two lt1 knock sensors.
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    1,779

    Well with both o2’s hooked up after exhaust I...

    Well with both o2’s hooked up after exhaust I have proper fluctuating O2 voltage. Not sure why this engines does this. I’ve drive to exhaust with out O2’s before and no problem.
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    1,779

    Just reviewed scan data and without O2’s hooked...

    Just reviewed scan data and without O2’s hooked up they are both showing 1107mV. Does that mean the pcm thinks it’s rich and is pulling fuel?
  8. Replies
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    1,779

    Maybe I’m getting LTFT enable temp confused with...

    Maybe I’m getting LTFT enable temp confused with Closed loop enable temp? Are these two different setting? Is this why STFT’s are still messing with my fueling (despite having no o2’s hooked up which...
  9. Replies
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    1,779

    Question about open loop

    Just completed a 2005 5.3 swap on a 86 chevy truck. I need to drive it to the exhaust shop without O2's and with open exhaust. I got it fired up and everything looks good but my fuel trims keep going...
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    1,847

    Any ideas on what would cause timing to be pulled...

    Any ideas on what would cause timing to be pulled to -10 during/briefly after a 1-2 shift?
  11. Replies
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    1,847

    Limp mode after 1/2 shift (pulls timing)

    2003 5.3 with 4l60e swapped into a 2003 Trailblazer. Everything works great but when given hard throttle and after making the 1-2 shift, the throttle loses power for a second or two before it kicks...
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    1,913

    2012 T42 tcm 4l60e to 4l80e

    I have a customer with a 2011 L96 6l80e. He wants to run a 4l80e and maintain VVT.

    My thoughts are to convert the harness to a E38 (already done), add a T42 TCM and flash it with a 4l80e...
  13. Is there a 2012 vehicle 4l80e calibration I can...

    Is there a 2012 vehicle 4l80e calibration I can use in my t42?
  14. Replies
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    11,272

    The shop who did the engine swap installed the...

    The shop who did the engine swap installed the dakota digital 128k 3 wire sensor for the speedo then tapped the VSS high signal wire into the signal wire in the dakota sensor. That signal was indeed...
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    11,272

    What do we do if we have a original cable driven...

    What do we do if we have a original cable driven speedometer on an old transfer case behind a electronic trans?
  16. Replies
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    11,272

    So, what is the correct way to program for a...

    So, what is the correct way to program for a 8,000 PPM genrator?
  17. Replies
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    11,272

    This was a stock harness so the speed sensors...

    This was a stock harness so the speed sensors only installed one way.

    It was purely a programming issue. Using a pulse generator instead of the stock 40 tooth reluctor can cause issues if not...
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    2,850

    Now is gm.gear the commanded gear OR the current...

    Now is gm.gear the commanded gear OR the current gear? I believe I had the current gear PID working fine. I wanted to see if the PCM was saying ‘shift’ or not.
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    11,272

    I had a nice smooth VSS line. And TPS signal. ...

    I had a nice smooth VSS line. And TPS signal.

    After banging me head against the wall for a while I figured it out.

    Since the transfer case had a mechanical speedo, they put a 8000 ppm pulse...
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    11,272

    4l80e not shifting out of first

    This is a 2002 6.0 with 4l80e. It has a digital dakota 8k pulse generator on it.

    Truck originally had a 3 wire dakota digital speed sensor and the shop tapped in the VSS high to the signal wire. I...
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    2,850

    Since I tried doing this I have updated the V2...

    Since I tried doing this I have updated the V2 firmware. I have yet to try logging again since the truck is an hour away. I just want to come prepared when I make the drive.
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    2,850

    GM.GearCom PID causing error report

    Trying to diagnose a 4l80e not upshifting. I am trying to log gm.gearcom (commanded gear) but whenever I select that PID (had to validate to make it active) and then try to connect I get a...
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    5,558

    What’s the relation of injector flow rates to maf...

    What’s the relation of injector flow rates to maf reading?
  24. Replies
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    5,558

    I've uploaded the right before file. I only...

    I've uploaded the right before file.

    I only have the stock file in .cal format (TC) which I modified to standalone operation in RT Tuner a year ago, flashed in my PCM, read with efilive ('before'...
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    5,558

    It is a stock 2002 5.3 with flex fuel injectors...

    It is a stock 2002 5.3 with flex fuel injectors (33 lb). Just noticed I uploaded the wrong BEFORE file. I’ll fix that
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