Sparkys92XJ

Both sound good! Haha I have a thrush on mine. It was cheap and sounds pretty good!

salukispeed

I am sure this question is like asking what your favorite oil is but here goes. I have a 98 XJ 4.0 Automatic completely stock on 235 15's. Runs great and gets between 13 and 20 MPG depending on use and speed. The muffler is rotting out at the seam and I am looking for a good quality cat back exhaust that will be better than the factory system. I am willing to have an increase in sound without the drumming that some systems create at 60 miles an hour as I do some lond distance highway driving. Tryed and tested suggestions please.
Thanks in advance

Tom95YJ

Magnaflow. Mine has a little rumble at idle and is just slightly louder the. Stock at cruising speeds but if your romping on the gas it gets loud I also have a a few videos in my build thread. I am also running 2.5" from the manifold to free flow cat and a magnaflow magnapack muffler so it is more aggressive then the normal magnaflow.

99superjeep01

Spintech 9000. Done.

CrawdadSlim

Hi all. I know this subject has probably been done to death but here it goes. I got a 2000 xj and need a high flow cat. Heres the problem: I live in cali and most distributors won't send me one. The vehicle I plan on installing it on is for off road only (lol) so I won't be breaking any laws. My question is what model high flow cat has the proper 02 ports for my application and who will mail it to me? Feel free to pm.

White Elephant

bump.

austinjoe13

Offroad only? Like a trailer queen? If that's the case, you have no legal obligation to have a cat installed. Enviromentally speaking yes you should have one, but not when it's gonna cost upwards of $200.

CrawdadSlim

Thanx for the feedback. I really do need one.

BumsModified98xj

Dont even bother with flowmaster your not gonna like it, chamberd muffler only soud awesome on v8's

austinjoe13

Same can be said about magnablow.

It's all in the guy's preference. Some people just can't handle the FM's raw awesomeness

EDIT: *you're, like 'you are not going to like it'

my89xj

Lololololol

Tom95YJ

Agreed and even then on the newer v8's they sound too tin like and omg talk about pure crap on the v8's with the cylinder deactivation lol

PNWjeeper

How much did anyone pay for a 2.5 system made and installed by a shop? I got an estimate of about $300 that's for a manifold installed (but not purchased) but everything else is made/purchased and installed.

austinjoe13

I paid $140 for the pipe work. I installed my own manifold then picked up a cat and brought it in. It was done in under an hour.

ironman13

I was thinking of removing my cat and cashing it in (before some douchebag does it for me) on my XJ and running a straight 2&1/2 in. pipe all the way back, will there be any performance repercussions and will it be loud? I was planning on reinstalling the O2 sensor and maybe throwing in some kind of muffler.