Are they worth the money.If so how much power can they produce..?

 

Im not a fan. I tried the Superchips one. Didn't do squat. I picked it up when I swapped to 3.42 gears in my auto. All the advertisement makes you think you can set the gear ratio. But even once selected. Nothing works. And the little 91 oct. tune doesnt do anything either.

Id get a real dyno tune and tranny tune if auto. Real gains to be had and functionality for your individual car. I dont trust mail order tunes either. They are talked about a lot on here. But every car is different.

 

you are better off getting a mail order tune and even those are not much

 

I would not waste my money on those things...something are to good to be true then they prob. are...get a real dyno tune or mail order tune...gains are a lot better