LMM: Gearbox z DPF-R, Any feedback???

Bustedknuckles

Honey Badger
Sep 25, 2010
1,308
2
38
33
Hagerstown MD
I havnt heard a lot about those on the duramax. Seeing as you have a LMM why don't you just get a local guy with a V2 to flash a tune on it for you? Should be under $300....