Nothing else done to car wondering if this thing would do anything to the car for the better ??

 

I wouldn't think that it would do anything noticeable at all...I wouldn't want to plug in something that is only a hundred bucks that messes with the fuel/air ratio. Found an old thread of people roasting pretty much the same thing just so you can see what I mean.

https://www.fitfreak.net/forums/fit-...ip-really.html

 

garbage. it'll probably fry a fuse before it does anything it claims.