wilson_m

would anything happen if i knocked out stock cat and took the muffler off of my 03?

turbo hoss

i do not think 03 has a cat as for the muffler a bit louder and free flowing exaust

wilson_m

i think it does i would have to get back under and check for sure tomorrow

kblranch

2003 Calif. standard horse power came with a cat.

Price_Dog

No cat = loud
No cat + no muffler = even louder

Don't think there's any problem unless you live in an emissions testing state/city.

wilson_m

tx is emissions...but they only do it on the newer trucks

Totallyrad

It would be obnoxiously loud.

wilson_m

i wouldnt think it would be louder then a 5in turbo back

OldSmokey

Its not too bad with a stock turbo. With a bigger turbo, (bigger exhaust housing) i had a pretty bad drone. With twins its just right

wilson_m

stock turbo...i wish i could get some twins on here already but cant afford all of that right now

98whitelightnin

I have an 03 with no muffler or cat and it sounds good except at 75, anything over or under is fine, just 75 is loud.

Keyser Soze

i got an 05, not cat and a 5" turbo back magnaflow and it sounds dope-a-lish like a Rachel Ray dish

i did stright pipe it once for about 5 mins wasnt for me thats for sure

TexasCTD

Texas does not do emissions testing on diesel trucks. It is a safety check only for $14.00.

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Dodgezilla

If you have a 6-speed it's an HO which means it's not a Cali SO which means no CAT. Only a muffler and it is

SUPER LOUD

if you take the muffler off. You will see. During the day it's not so bad but if you leave out early in the am you will wake the dead!!!!!

And there are no retarded/dumb questions here. Only retarded/dumb answers sometimes....

rip 112

I run stacks on mine, used to be straight but man it got obnoxious after a year or so, now I have a muffler on it and its still loud, but it sounds so good I don't wanna touch it any more, unless someone trades me for a full 5" exhaust. I know many of you have seen my vid, and I will make more down the road, but here is a sound clip letting you know how loud they can be even with a muffler. The noise is about the same coming out a stock tailpipe, but its location makes it a little quieter in the cab. The stacks let you know every sound the truck makes.