LLY Exhaust [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: LLY Exhaust


DSTRBD
03-13-2004, 12:55 AM
We have been getting a few questions lately about the LLY and exhaust systems, so today we put a DPP system on our LLY. It fit like a glove. We also installed the optional Down Pipe to have a true 4" system all the way back and to get rid of the kitty. We took it for a test drive afterwards and have not stopped smiling yet. Pics will be up soon and hopefully some sound clips.

dmaxalliTech
03-13-2004, 12:43 PM
The LB7 downpipe and the LLY downpipe are interchangable?

SteveNorCal
03-13-2004, 12:57 PM
Did you re-install the CAT?

DSTRBD
03-13-2004, 01:20 PM
Yes, they are interchangeable. This is the same system from DPP that fits on the LB7.


The optional down pipe replaces the pipe that the cat is on. I will be saving it though in case emissions problems ever arise.


When you get on it, the sound is AWESOME! You can really hear the turbo whistle and then wind down when you let off. I gotta figure out how to do sound clips.

Diesel Power
03-15-2004, 04:46 PM
i think he means the intermediate pipe, not the downpipe. the downpipe comes directly off the turbo and the trucks have different turbos..


i'm sure that makes the exhaust guys happy.. less work re-inventing the wheel..Edited by: Diesel Power

DSTRBD
03-15-2004, 11:07 PM
Nick- Yes, I am referring to the intermediate pipe. Its just easier to call it the DP. Sorry for the confusion.