Ok i dont wanna do much to the Navigator since it s our Family car.

But ive seen people have the Programmers/tuners on trucks and stuff.

Would it be worth it on the Navigator. I know some tuners have the feature for pulling/economy/power/etc.

That way i can turn it down just for city driving and then up when pulling a trailer cause we have alot of hills around here.

Im not looking to make tons of power. And dont know if its worth the money. If so which one is the best tuner to look into.

I didnt know whether to post this here or in the Programmer section. Sorry