havent driven on the highway yet but other than the rev limiter and the fan staying on when i shut the car off. i havent noticed a big difference. im not complaining by no means. just sharing so far. tommorow im gonna get on it a little bit and take out on the open road. too much traffic now. keep ya updated.

 

Did you do it yourself? If so, any problems? Mine should be here tomorrow.

 

85 bucks at a chevy dealer. im chicken!