Join Date: Dec 2012
Location: Riverview, New Brunswick, canada
Originally Posted by Hook'em_Horns! View Post
I would be wondering why it's getting dirty...just aft of the air filter.
Air filters do allow some dirt to go through. The more plugged the filter gets the more that works it's way through . Gm says 50k is the life of an air filter.
The best set up for an air filter on the duramax trucks in the lbz lmm. By far the best at collecting dirt.
The lml stock air filter with the cotton lining on it also does a great job but I find it plugs up faster. After market lml filters dont havr the cotten lining and are crap IMO.
The lb7 lly air filters work ok in stock forum.
Now after market filters are all junk IMO. They flow more air yes but they also let more dirt in. From my expernce working on these trucks I've yet to see one after market cold air intake bullshit actually keep that MAF sensor clean.
Oiled filter or dry element. And yes I have seen S&B filters on trucks they allow dirt to pass through.
This is all my opinions but the amount of dirt I have seen a stock lbz lmm filter hold is amazing.
If your not pushing 600 hp a stock filters fine IMO
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2006 LBZ, EFI Live from duramaxtuner.com/motor ops with transmission tuning(STRONGLY RECOMMEND), FASS 150 Titanium series, 3 inch MBRP downpipe, 4 inch MBRP free flowing exhaust system(factory muffler back on to kill the drone when towing), Egr blocked and turned off, trans-go shift kit Jr, Edge Cs 85100 for reading data, PPE FPRV race plug, more Mod's to come when cash is in my bank account!