Not sure which 1999 Jeep Wrangler Performance Chips & Programmers are right for you? We have over 7429 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"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." —John P from Silverthorne, CO bought a Banks PowerPack System for a 1999 Jeep Wrangler, 4.0L 6-cyl. engine.