Headers and other aftermarket exhaust

[Brenton]

I've been wanting to replace my whole exhaust system...header/manifold to tip. Anything good out there for us? Thanks for any pointers. :yes:

[mvusse]

Don't know offhand what brand, but a friend of mine installed a header on his Cherokee and had to take it off again as it wasn't clearanced for the front driveshaft like the stock downpipe is. Would have worked fine on a 2wd, though.

[Paul Bruchal]

I'm installing Pace-Setter headers and a Cherry-Bomb glasspack today.

[big66440]

clifford performance (6=8) makes a nice header that fits renix 4.0's a bit pricey but have all the goodies of a top notch company,I called them a few weeks ago and asked for details 1/2" flange,16 gauge mandrel bent tubing,ceramic coated

[Kernel]

header wise i have a borla on my '87 xj (with cat back) and a banks on my '91 mj (just header). the borla helped the renix but the banks is/was a stock replacement. cat back for a mj prob not but you could get the header, down tube, to cat, maybe muffler and then head to your local exhaust shop. maybe flowmaster makes a cat back systems? been very happy with both headers (borla late 90's, banks mid 2000's) with no prob... expensive yes. worth it yes. .02

[carnuck]

Unless you've pumped up the power or made it a stroker, the header will do very little over the stock exhaust other than drain your wallet. Borla was the OEM manufacturer of many years of XJs.

[Kernel]

YES! and no.

 

my case cracked manifold/s: you can replace your stock soon to be cracked already cracked manifold with another stock manifold ? for half the price of a borla/banks (over the counter). or have your soon to be cracked prob already cracked manifold welded up.

 

the borla helped the renix still not a high output but it helped it. the biggest gain was just climbing grades (in a rig that has the aerodynamics of a brick and with mine running 35's w/4:56's) being able to stay in overdrive without running in 3rd for miles.

 

went with the banks on the mj just to be different/try it plus the previous owner had a new cat back exhaust (muffler shop) installed. the banks just bolted right to the stock down tube.

 

stock 4.0L manifold suck. .02

[chunks6067]

I went the pace-setter route (had great clearance with the down pipe and my drive shaft), with a magnaflow cat, and cheap flowmaster i found on craigslist.

Was harder and took longer to remove the old exhaust system that had 4 cracks on the manifold, and at least 3 leaks on the rest of the system, oh and it was pretty much held on by rust.