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1999 Jeep Wrangler Performance Chips & Programmers

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Latest Customer Reviews

Hypertech Max Energy Programmer Reviews

Hypertech Programmer

Reviewed By David N (Henderson, NV) Reviewed for a 1999 Jeep Wrangler —5/15/2013 7:12 PM

I choose Hypertech because I also own one for my 2001 diesel truck and it works very well, this one for my jeep was a little harder to install, the program (required me to use my computer) but was no problem. There is a definite HP increase, I also put a new header and exhaust on which I recommend before increasing HP in any motor.

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Superchips Trail Jammer EXT Jeep Performance Package Reviews

better power& mileage for my Jeep!

Reviewed By Kevin F (Newton, IL) Reviewed for a 1999 Jeep Wrangler —2/8/2013 5:17 AM

helped my 1999 jeep wrangler go from12.7 mpg to14.5 mpg. also helped on h.p., shifts better & more torque.

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Banks PowerPack System Reviews

Banks Powerpack 99 TJ 4.0

Reviewed By John P (Silverthorne, CO) Reviewed for a 1999 Jeep Wrangler —10/28/2009 12:55 PM

It definitely takes some time to get the headers on what with having to remove the intake manifold, fuel rail, etc. but the end result is well worth the effort. My jeep has 33s and a 4 inch lift, and it feels like a sports car now in comparison to the way it used to be. Much more torque and throttle response, and much more powerful overall. I am also noticing a substantial fuel efficiency increase and added about 45 miles to my average tank of gas overall. It also ends up with a very "meaty" yet still uniquely jeep sound. I would recommend the Banks Powerpack system to anyone with a Jeep as I can't speak highly enough about it.

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