Dear AquaTune, I ordered one of your AquaTunePlus units through one of your dealers. I have a ’04 Dodge 1500 with the 5.7L Hemi engine. I also had him install it for me. The first thing I noticed was the increase in hp. Quite impressive! One thing for sure, I have been telling everyone about this system. This unit is saving me at least $23.00 per tankful. Sure glad I bought it what with the price of gas continuing to creep up.