Bought the performance kit and I am very satisfied ! Increased fuel mileage on my Chevrolet Duramax after first usage. I am wondering how much more increase I will get with further usage! Great products and I will be purchasing again for my truck and going to put it in all my vehicles!
This stuff makes my 6.0 sing. It idles much smoother and engine is a lot quieter.
This works! Had a problem with my 03 7.3 and it worked wonders for it!
Very good product, noticed the performance.
I can tell the difference in the idle and in the excelleration, the engine is smoother running. My fuel consumption (mpg) has improved with 11/2 to 2 mpg. This is great stuff!!! I’m sold!!! Been using for over a year