Happy holidays guys,


I want my 6.7 to be louder, i have the mods listed below, the DFP delete 4" with the catless downpipe, It is still not loud, do the 6.7's just not get loud or if i upgraded to a 5" would it help alot.

Thanks

 

i don't know, but my setup is plenty loud. when i get on on it, it's really almost too loud. i have heard the 4" turbo back, and it doesn't even compare to my 5". one thing though, is the drone with th 5" is loud. it's only at freeway speds, between around 2200-2400 rpm, but that is cruising speed for many. basically with my manual tranny that puts me in the 70-75 mph zone. above or below that it's fine. i actually put a 5" mbrp muffler on to quiet the drone, but really like the raw sound i get running around town, and there is no drone at lower speeds. so off came the muffler.

 

Got the H&S stage II (4 inch turbo back) to a set of MBRP stacks (5 inch mitres) and it really sings. Loud as all get out if you go full throttle but really bearable with little drone up around 80ish on the interstate and on easy take offs.

 

Ya i have a 4" dpf/cat delete but still have the stock downpipe. Mine wasnt too impressive but with my dual 5" stacks it sounds awesome and i get next to no in cab drone, i dont think i would want this thing much louder. The stacks made a huge difference especially cause they exit right behind the cab rather then 6 feet back there so you actually "hear" the exhaust better. Especially with my rear sliding window open. Gives me a headache after awhile. Also the larger diameter stacks you go with the more the sound will resonate and the louder it will be. 5"tbe connected to dual 7" stacks is rediculously loud.

 

I just did a delete on one of my friends trucks, he has the 4" going into 6" stacks, and it's not very loud...

 

I know i could get alot more sound out of some stacks but im not liking the idea much, it is growing on me though. I guess i want the sound of a 5.9 with a 5 inch and i dont think its going to happen. I Guess i will likely upgrade to 5 inch turbo back with a nice tip.

Let me know if i am wasting my money.