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Originally Posted by shrummyboy   im knew to diesels and ive seen alot of yall say buy a egr lock off (i understand that) and buy a mouth piece, what are yall talking about? |
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Originally Posted by bpe1 The problem is on the lly engines. |
The mouthpiece is a problem on the LLY motors... the egr blocker plate refers to all year durmax trucks.
Egr blocker keeps nasty exhaust gases from being pushed back through your intake and charge lines and gumming them up with oil and soot.
Mouthpiece on an LLY is very restrictive, swapping it out for an LBZ, Kodiak or AFE helps the turbo breathe a little better.
What year truck are you running??