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he did say the truck feel low on power when the light came on!

new update! it happen again this time he was driving on the highway cruising and the check engine came on again! yeah the first time it was coming to a stop. i did adjust the upper limit thresold
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this is my uncle truck did a dpf delete for fuel economy, added turbo brake, keep stock tune and k&n filter! everything was fine but yesterday it threw P0101 mass air flow performance code! do i need...

Yes that was my first mistake! But this time I set everything like in my working Lbz calibration but it just don't change a thing shift point stay the same! :/ I could send you the file if you wanna...

Same trouble but this time I can't figure it out! On lly 5 speed Allison the truck don't want to downshift a 0% throttle I even try at 6%! On my Lbz 6speed it worked fine but I can't get It working...

forget it i got it working! :P my mistake :P

hi all! it's my first post here!

i have build a tune with exhaust brake and it's working fine but i have to downshift in manual mode! so i headed to my tcm and i put more aggressive number at...