LMM: Help!!!!!

Dennon2009

New member
Jan 15, 2012
63
0
0
Kansas
Okay i have a 07.5 LMM and its got 5" turbo back exhaust and EFI just recently installed... thats it for performance mods

I previously bought the truck with an H&S Mini Maxx on the truck, i took it off and installed EFI live. I cant get the truck to run right, im running a single street tune, At first it was throwing P0100 (mass air flow sensor) So i tried cleaning the sensor, than replaced the air filter, and that didnt help. So i replaced the MAF sensor. Now its not throwing any codes, its just "reducing engine power" if i let it idle for more than 30-45 seconds.

Please help, any idea's will be appreciated. Ive had my tuner rewrite my tune and im still getting the same results.
 

S Phinney

Active member
Aug 15, 2008
4,011
18
28
Quncy, Fl
Log to see what MAF readings are. It could be throwing codes and limping because the MAF is too much out of parameters.

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