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    Made a little progress on the RPM surge by...

    Made a little progress on the RPM surge by adjusting the throttle cracker airflow table lowering the values in the 1,000-1,600 rpm/12-16mph cells.

    Have not made much progress on the stalling issue...
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    Hey Matt thanks for the help! So I also own an 05...

    Hey Matt thanks for the help! So I also own an 05 factory manual trans truck and have used that for reference on many things. With the manual swap, the truck thinks it's in D4 at all times so I know...
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    The main table I have messed with to try and fix...

    The main table I have messed with to try and fix this issue is the "Idle Airflow" table under Engine>Idle>Airflow>Base Running Airflow. Is this the wrong table? I do not see another option for...
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    This morning I was not logging data but it...

    This morning I was not logging data but it stalled 4 times coming up to a stop.

    I have tuned BAF specifically starting when engine temps were cold and letting it idle up to temp with no...
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    RPM surge while slowing down in neutral

    I've been working on a few driveability issues on and off for a while now and I sorta have it down to two things. The vehicle is a 04 Tahoe with a LQ4, 862s, 224/228 113lsa cam, 5 speed swapped,...
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    Oh well, that explains everything! Thank you guys...

    Oh well, that explains everything! Thank you guys I had a feeling it was something simple and I'm stupid haha.
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    Thank you for the response. MAF should be...

    Thank you for the response.

    MAF should be failed with High RPM Disable set to 10,000 RPM as well as, with the MAF Freq Fail High set to 0Hz. I do have MIL P0103 set to no error reported but I...
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    Lean below 1,600 throttle clears it up

    This is a 2004 DBW Tahoe, LQ4, 862s, 224/228 113lsa, TBSS with LS2TB, and a manual trans swap. With the O2s active and in speed density the truck runs great and is within 1% in all cells except for...
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    I believe they are 42lb injectors same injectors...

    I believe they are 42lb injectors same injectors its had for 4 years.

    How can you determine false knock?
    I had considered that already and tonight pulled the intake to check the knock sensor...
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    Check my tune 408ci

    The motor is an iron 408 with PRC247 heads, 11-1 comp, 231/243 .627/.615 113lsa cam, TBSS intake, and 87mm TB. It's in a 2004 Denali that's been manual transmission swapped several years ago and was...
  11. Finally got the bench harness. On the first...

    Finally got the bench harness. On the first attempt I was able to save the P59 that was repeatedly failing while in the vehicle. I checked the pins on the OBD2 port in the tahoe and they appear to be...
  12. Bill Thanks for the reply. The original ECU...

    Bill Thanks for the reply.

    The original ECU failed multiple times during just a write calibration. The second ECU I used did fail during a write entire but I attempted again and it worked without...
  13. Write entire failed the first attempt it stalled...

    Write entire failed the first attempt it stalled at 30.8% and had the same error as before. Second attempt took about 20 agonizing minutes but it works and I just dumped the clutch and did donuts in...
  14. Swapped ECUs and the first try had the same...

    Swapped ECUs and the first try had the same error. Second try reminded me I was flashing using the wrong OS since my other trucks on a 4 bar map. Now I'm writing entire on low speed and its 20%...
  15. Further evidence its likely bricked is that my...

    Further evidence its likely bricked is that my Ultra Gauge won't connect to it anymore. Guess Ill go pull the ecu off my other truck and try.
  16. Just unpluged radio and amp even switched USB...

    Just unpluged radio and amp even switched USB ports on my laptop no change.
  17. After market radio yes no aftermarket alarm, but...

    After market radio yes no aftermarket alarm, but it was installed long before I started writing new calibrations. I also turn the radio off along with head lights, interior lights and ac controls...
  18. controller unlocker timer failed. No start no nothing

    2004 tahoe P59 ecu. Went to change the tune just a very minor idle adjustment and when erasing I got the message "Controller Unlocker Timer Failed". Disconnected everything and turned truck on/off...
  19. Lots of good info in this thread! Its kinda hard...

    Lots of good info in this thread! Its kinda hard to find good info for tuning these. I have a buddy with a 2013 that wants me to start messing with his tune.

    Have you had any more updates James?
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    Thanks looks like your new too so welcome! ...

    Thanks looks like your new too so welcome!



    Great info thanks!
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    Have you used it with vehicles that have cats?...

    Have you used it with vehicles that have cats? Will that mess up the readings?
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    I see clamps like this but was not sure if they...

    I see clamps like this but was not sure if they are accurate when used with an AEM 4110 and Bosch 4.9 sensor since typically you want to run the sensor close to the collector.
    ...
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    Cheese and rice you're everywhere! I guess...

    Cheese and rice you're everywhere!

    I guess what I'm looking for is a way to run a single wide band on multiple vehicles without hacking factory wiring or having to change math parameters in the...
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    New guy from FL. What wideband to get?

    Ok so I've been reading here for awhile watching tons of youtube videos. I owned a MPVI for 4 or 5 years and paid a guy to remote tune my boosted gmt800 silverado and my mild built lq9 swapped manual...
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    Sticky: Hey all I've had HPT for 4 or 5 years now but...

    Hey all I've had HPT for 4 or 5 years now but just upgraded to MPVI2 pro and decided to stop paying people to tune my stuff! I know enough to get in trouble and have been watching every video and...
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