Hi Guys...
Having real trouble with Interference on my standard head unit in my S4... it started out okay, but certain amp would not work (mono blocks), now my standard amp is starting to suffer the same - int comes mostly from the engine/alternator. I have run a second earth to the back of...
VAG-Com on your own is okay, but you cannot perform a full leak test and diagnosing a failing MAF is not straightforward. Gauranteed you will have 1 of it not all of the following faults:
MAF (And potentially as a result failing EGT)
Diverter Valve(s) shot
Boost Leak
The last one of course...
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