macgeng

I want to upgrade my 00' XJ 4.0 with a performance exhaust header. Any good recommendation? Thanks guys!

andrewmp6

JBA and banks

Fred/N0AZZ

Banks will be the best.

Dumajones

I have banks on the 2000.. no problems, no leaks..

Here is some more header info for 00-01.

http://www.jeepforum.com/forum/f11/a...ffered-502290/

andrewmp6

Only problem is the 00-01 have less header options and all of them are pricey.

mschi772

I'm particularly fond of Thorley (not sure if they still make 00-01 header though), and you can get them through Kolak who is an awesome guy.

macgeng

what about Rugged Ridge header? the price seems reasonable.

http://www.ebay.com/itm/Jeep-Wrangle...1R5~LO&vxp=mtr

you guys with the 00-01's, do you all upgrade the y pipe as well?

Dumajones

I have fed emissions so I didn't. thats the header I would go with if Banks is too much for your liking.

andrewmp6

I believe the exhaust ports are different in the older head vs the 00 up,So running that older header could be a choke point and kill any power it might give.

Anony

2000 uses a two piece, front and rear header.

The Banks isn't all that more expensive than other headers for 2000-2001 and the price includes both the front and rear header, while some of the others have separate prices for the front and rear.

The Banks appears to be closer to a performance header whereas some of the other brands appear to be closer to a stock header.

1999-2001 Jeep Cherokee/ Grand Cherokee

http://www.jegs.com/i/Banks/139/51306/10002/-1

cleenrob

anything but an apn

jon-d

do these really make a difference over stock or is it the stock fails too often and you are looking for a reliable header?

mschi772

All by themselves? Little to no difference. Used in tandem with other carefully-planned modifications? Depends on the mods and how well-planned it all is, but there is the potential for a good header to be a key part of the puzzle, yes.

cleenrob

long tube headers make a bigger difference

Anony

Jeep at one time had an OEM performance header and cat-back system. It was discontinued for the XJ. I believe it was usually installed for off-road and perhaps on-road racing XJ's. Jeep OEM the last time I checked still offers some performance hardware for the Grand Cherokee.

I'm not certain how well a performance header works if you don't do other modification such as to the intake. Perhaps installing a larger or performance intake along with a performance header you may see more significant performance.