no cat or no muffler that is the question [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: no cat or no muffler that is the question


Jaytech5
06-25-2005, 07:44 PM
Alright I did all the searches but couldn't find exaxtly what I was looking for. I want a louder truck but don't want the truck to throw me any codes -:t . I was wondering what would be better a better sound no cat with the stock muffler, or no muffer with stock cat.....oh by the way this is an lly with the stock exhaust.



Thanks in advance

RickDLance
06-25-2005, 10:58 PM
I've done it most every way. No cat seams to make the best sound and gives you the lowest EGT. Some states are checking for that now. Removing both sounds like 50 mad vacuum cleaners when you're at full throttle!

MaddDogg49
06-27-2005, 10:33 PM
i love mine... i had no cat when i got it and i removed the muffler a couple weeks ago... shes a beast

twotone
06-28-2005, 01:55 AM
http://users.adelphia.net/~raven0826/MOV00091.MPG

thats what a LLY sounds like strait piped and with no cat

_nar_
06-28-2005, 02:02 AM
With stock 3.5 inch pipe.. You can only hear me get on it for a second though...