Hello forum. I got a 2000 Cherokee. With throttle body spacer, header, and cold air intake. I'm considering a programmer next. Has anyone had good or bad experiences? What results have you had and can recommend? Thanks all

 

They don't work. Don't waste your money.

 

From what ive read they're not worth it and you could spend your money on much better things

 

I do think the programmers on the 4.0 are worth it you still might only get 10 to 15 hp but that's almost 10%. Ive had two people that put the trail jammer system on and said that it was the best money they ever spent on their jeeps