Straight Pipe

[hi_c]

Chat room?

Ok, my catalytic converter has broken 3x in 3 years. I'm tired of replacing it (once was under warranty, so only paid twice). In S.C. there are no vehicle inspections, so it's "not illegal". Notice I didn't say legal. Anyway, I want to straight pipe it. Should I run the pipe all the way out the back, or keep the muffler in place? I only have a 2.5L 4 cylinder, will it be tremendously loud, like a harley, or just loud, like a V8 with big exhaust system? If you've done it, did you run into any road blocks? Help me. Thanks.

c

 

[Greywolf]

Having lost a muffler or two from my Jeeps I can tell ya... even the 258 can be load enough to quite annoying over a period of time (does have a great sounding grumble though).

Consider leaving the muffler/upgrading to a better set up. You'd probably be happier in the long run.

See ya,

Chris

 

[84_CJ7]

I run a 258 with no CAT Converter and a Flowmaster. It is a little louder than I would like, but if I didn't have the Flowmaster it would be really obnoxious. Definitely put a muffler back on.

Scott

 

[bryanjeep]

Hey, I have the 2.5 with a pipe where the cat was. I run a mellow tone muffler where the old muffler was. I really like the sound. SOunds like a v8 at idle. Everybody turns their heads for me. No, no raod blocks.

 

[hi_c]

Thanks guys for your post. I think I'm just gonna replace the cat with some 3" diameter pipe.

 

[Snitty]

i'm not quite convinced that a 4 cyl will sound like a v8... and you don't have to go with 3" pipe... you only need 2"... the rest of the system is about 2", so anything bigger will just be unnecessary expenses

 

[Tug-n-pull]

no cat keep muffler! tug

 

[jeeprostyle]

My jeep had straight pipes when i got it. It was really loud and got annoying quick, fast, and in a hurry. If you want to be able to hear yourself think, keep the muffler.

 

[jhiggins]

Keep the muffler ...no cat will be a big difference...

 

[n2jeeps]

My cat. is bad it's coughing out honey comb chunks all over the driveway. Can I cut it out and slip in a pipe for now? If so, any ideas?

 

[jhiggins]

Just cut it and weld a new one on ....You will be good to go...You sure it's not the muffler though???

 

[n2jeeps]

Not sure, Ive never seen inside of either. which one has a honeycomb inside?

 

[jhiggins]

Are they stock or after market ??? The both do to an extent...

 

[n2jeeps]

stock. The reason I think its the converter is that it was cutting out and chugin' down the road until I got it home and reved it up and all this crap started flying out.

 

[jhiggins]

It is probably your muffler or the combonation of both ....

 

[n2jeeps]

All's well that ends well?

Thanks Higgins, I will dive in and see what I can find out.

 

[jhiggins]

Bang around on the muffler and see if you can hear stuff rattiling around in there ...and also on the cat....

 

[Snitty]

cut the cat open.. knock all the crap out of it... weld a pipe through it... weld the halves back together, fill the shell with high temp foam... nobody will ever know

 

[n2jeeps]

We don't have inspections here anymore. I'm lookin' for a quick fix to get me on the road, and give me time to get a new system. w/out tha cat. :lol:

 

[jhiggins]

Just put you a peice of 2" pipe up there and weld it in /////