76ANTHONY

i have a nice manifold but i want to build the down tube to the tailpipe. but the issue is i havent found 2 things that i like. 1. the downtube. 2. the highflow cat. are there any that are better than others? id like a bolt in cat, but if it isnt i'll live.
suggestions?

76ANTHONY

almost forgot, its an 87...

kamokid

um, a little advice dont use a cat.. instant hp gain.. just use pipe all the way down to the muffler no cat.. as for the torque tube (down tube), they dont sell any aftermarket variations, because its a tight squeeze. your possibilities are endless

kamokid

this weekend im going to rip my cat out for good.. i just put a hp one in to make my pop happy.. little does he know its coming out and quick! lol sorry i forgot to mention i have a hp cat,but it isnt as good as no ca and its going..

finneys98xj

dont talk about no cats on here you will get slammed for!

OverlandZJ

C'mon Kid, thats an irresponsible way to gain a few HP. Listen to your pop.

Or trade the XJ in on a Supra or something if ya got the need for speed bug.


Anthony. I run a Magnaflow cat. You can pick one up from summit racing for ~$100.

Rob92XJ

REMOVING A CAT IS A FEDERAL CRIME, with that said my cat was ripped off on a trail and currently have a pipe in its place, since that has happened I now have 3 burned exhaust valves. When I install my new stroker engine I will be putting another Products for Power cat back on(only a much smaller diameter).
On my XJ I have a Borla full length header with a 2.5" down pipe and full 2.5" exhaust, Flowmaster 40 series muffler and tailpipe is from Rusty's. Sounds good too.

offroadnut36

i say get a nice header and muffler and cat, and then have an exhaust shop custom bend the pipes and hook it all up.

76ANTHONY

WELL TAKING THE CAT OFF ISNT AN OPTION, I LIVE IN SMOGONIA, CALI. opps caps. overland i looked at that one, i think i may use that cat and just a nice catback system. theres really nothing wrong with my downtube but i didnt know if there was a better one out there.
thanks guys, im on this.

OverlandZJ

Anthony, i run the Dynamax catback behind it.(also available @ summit) I ran the Flowmaster last time, it got old...or i did. The droning got on my nerves.

That and the fact when i'm in the backcountry, wildlife viewing is a bonus with the scenery... i saw no point in being loud enough to run that pleasure off.

Oh, and on the Dynamax... i just found out friday i had a bad muffler after 16 months. Called the vendor i bought it from and a replacement is on it's way. I was surprised the warranty was still good.

I keep using my factory downpipe. I have read others dont quite fit as well.

Metmknice

I would say, get a good local shop to build you a custom downpipe that has a 2.5" outlet with a flange on it, so you can just bolt up a cat, unless you want to use a clamp. Then after the cat, just run straight pipe as far back as you want. Cat-back systems are overpriced in my opinion. go with the same thing with that as with the downpipe. Have the exhaust shop make it, just make sure they use a mandrel bender.

kamokid

hey guys, i apologize. I didnt know it was a crime to do that.. I wont take it off.. i dont want any tickets or anything like that so its stayin on there.. I heard its better horsepower, thats what i was told.. Trust me the last thing i need is a ticket please disreguard what i said about it

kamokid

oh, and i love my gibson cat back by the way.. Sounds awesome and i hear its a good deal cheaper than some of them out there.. just thought id throw that out there

OverlandZJ

Zack Fon

Dont listen to em rip it off