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Discussion Starter #1
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!
 

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Discussion Starter #2
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.
 
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