[kcfire3]

Hey guys, have a AD165 on a 08LMM and my milage went to shit. Straight up like 8mpg, trying to figure this out. I think maybe my quick connects might be sucking air? How can you tell? Low psi? Noises? Please anythig suggestions will help!

 

[kcfire3]

And it did this as soon as i put the airdog on. Its not the air filter or uel filter or MAF sensor. Changed out all that already.