I think the website posts the gains of ~6 hp. So not much. My exhaust and cold air intake was a big increase. I would recommend doing that first. The sound of the exhaust is very pleasing in addition to the hp gains.
I cannot say actual numbers, but I can feel the difference since I have used the programmer. I think the car responds quicker when I hit the gas. The company lists this as one of the features.
As everyone says a custom tune is the best, but it also involves more effort and money.
|