Anyone around here running a gutted cat on a LLY?

Melvin:rolleyes:

No, My cat ran away from home before I could gut it. ):h When I looked inside, looked like a lot of trouble, so I got rid of it.

No, My cat ran away from home before I could gut it. ):h When I looked inside, looked like a lot of trouble, so I got rid of it.Hello Big Angry,

Sorry to hear that your kitty got scare and ran away from home before you could give her, her much needed hysterectomy.):h
I don't have the nerve to get rid of my kitty because, I am sure that my dealer will be looking for it every time I take the truck back for service.
We already discussed that after I installed my MRP four inch dual exhaust. Therefore, I obtained a sacrificial Kitty to gut . . . and if needed I will still have a good one to replace when and if, push come to shove.

Regard

Melvin

aka Slick

That's smart. Keep the kitty around for just that purpose. Might save you a lot of headache down the road as well as hassle from the law.

I have my finger on the way. I loved the sound from my 03 with no cat. :)

That's smart. Keep the kitty around for just that purpose. Might save you a lot of headache down the road as well as hassle from the law.Do you think my LLY will be excessive noisy with the gutted cat and dual exhaust, how about yours with the single and straight pipe?

I have my finger on the way. I loved the sound from my 03 with no cat. :)Does it sound like a tractor, or a gasser with nice pipes?

I have a straight thru exhaust right now....not to loud in the cab. I had the woman drive it the other day with the edge and pup stacked.....damn is it loud!! It sounds like a cross between a 454 and a jet air craft...I really like it! I have a pieced together homemade job right now...my mbrp straight thru 4 inch will be installed thursday...wonder if its gonna be any louder?):h

Sounds like a jet engine at WOT. I dont know if any other mods make it sound different, but it sounds like a hair dryer/hair clippers at idle, its just spitting out exhaust and you can hear a constant 'shhhhhhhhh'. When you drive with the windows down, its very noticable, but with the windows up, no sound aside from the roar at WOT. Totally diff from a gasser, its deeper and you hear more of the engine rather than a 'burrrrrrr". When someone drives next to me, they look at me all funny due to the sound it makes, unlike any car on the road.

Does it sound like a tractor, or a gasser with nice pipes?It sounded like a hot bigblock at throttle. At idle it was a tad louder than my lly with the new 4" cat back. At cruise a fair amount louder but still fine to me. At wide open I really cant tell inside, I actually hear more noise upfront than out the back.

I should add, the muffler on the 03 wasnt much of a muffler either. Dunno what they put on it. Every once in a while my wife would take off to get some lunch from work, and man it sounds gooood takin off. :P

anyone here running without the cat, but with a muffler? I have the banks monster and was planning on ditching my cat - will I still get the 454/jet aircraft thing or am i screwed? will removing the cat make any difference in sound (quality) or just allow my exhaust to be a little happier?

THanks.

anyone here running without the cat, but with a muffler? I have the banks monster and was planning on ditching my cat - will I still get the 454/jet aircraft thing or am i screwed? will removing the cat make any difference in sound (quality) or just allow my exhaust to be a little happier?

THanks.
Well, besides the turbo being diff, my 03 ran no cat with a muffler and sounds like the 454 thing. I think the cat really quiets the truck down considerably. I wont know for a while till my fingers mod gets here. Thats if I can hold out till then.

It's hard to describe, got a nice big block type rumble, but a very distincitve whistle to it. You won't be dissappointed.

anyone here running without the cat, but with a muffler?
If I remember correctly, Rick Lance does.

Jim

How do you gut the CAT?

I'm running straight pipe (same size ) from the CAT back, except for a nice rumble at start-up you can't tell it's there. I have an extra CAT that I could install for warranty or emissions testing.

So gutting the CAT is next to see what kind of sound I get with that mod. But I don't know how. Can someone tell me please.

Thanks,

Both my LLY's are "cat less". I used the earlier LB7 front pipe to replace the cat pipe completely. Local exhaust shop had a used 1 and gave it to me. Definately increased the "vacuum cleaner" sound. About 10-20 percent louder overall. You can drive all day without a rumble. EGT's on my attitude went down about 75 degress. Mileage and power ????? I had tried a complete 4" system but seamed to hurt MPG and way to loud for 11 hour a day driving. I also left the cat on and tried the no muffler deal. Could not really tell much differance. The way I have it now seams to suit me.

i had a muffler sith no cat and it sounded good . then i took off the muffler and it sounds great . sounds like a jet aircraft at idle .

Here‘s a picture of my gutted cat.

http://www.cuillin.demon.co.uk/groovey/dcat3.html :ro)