I have a 05 Chrysler crossfire limited. Has a little over 150k on it. I noticed when I would step on the gas getting on the freeway or just out for a spirited drive with the top down, it just wouldnt pick up very well. Pretty disappointing since it has a v6 and dual intakes. I heard about hydro tuneup and what it could possibly do for the car. So I took it in and not only did I get the power back in that little roadster but I also noticed I got better mpg. Its running the smoothest it ever ran since I got it. Will be going back for another round soon.