Intake upgrade to 99+...

[red91]

I have access to one, but would like to know who has done this already, and the headache involved. Was told you'd get more power. Yeah, or neah ?

 

[Bryan C.]

Well, I hate be the one who busts out with the "S" word, so I won't. I just went ahead and did it for you. I did the swap and have commented in a few threads regarding the process. Don't just believe what you read about the HP increase. It does indeed give more power, but it also causes a slight low RPM power loss. On my 96 XJ, the HP increases only come about at over 1500-2000 rpm, while I feel I have lost some low RPM torque.Try these links for some good info:

http://go.jeep-xj.info/HowtoIntakeManifold1.htm

http://www.naxja.org/forum/showthread.php?t=23948&highlight=intake+manifold

http://www.naxja.org/forum/showthread.php?t=21127&highlight=intake+manifold

http://www.naxja.org/forum/showthread.php?t=16922&highlight=intake+manifold

http://www.naxja.org/forum/showthread.php?t=16922&highlight=intake+manifold

http://www.naxja.org/forum/showthread.php?t=12243&highlight=intake+manifold

http://www.naxja.org/forum/showthread.php?t=6303&highlight=intake+manifold

Bryan

 

[XJVenom]

I've done the swap onto my 91. The power increase was very large but I can't say exactly how the new intake contributed, because I installed it the same I installed a new header, complete high-flow exhaust system, and ported HO head.