I have prerunner setup on my titan and am curious if any benefits would come from a tuner and if so which one is best?
I need get my speedo accurate again bc my tires are 39's and I also am curious if it will help improve power/efficiency at all withy my CAI and JBA shorty headers?
Uprev is the best tuner you're gonna be able to find. Comes with a hefty price (about $800). People with more shallow pockets prefer the BullyDog GT which is a lot cheaper. You can get a used one about $250 from this site. Just get a 40415 or 40410. It works on 2005-2014