I believe GDI IVD from CRC will be my new friend. Why? I just did some testing with it and I believe it will be a solid product going forward with my TB. I won't go into all the specifics on the initial post, but with the GDI systems in these trucks, it'll be crucial to keep them clean. I ran a can of this today in my service vehicle that has been averaging about 21.3 - 22.6 MPG on the highway for the past 40k +/- miles. I've not noticed any excessive rough idle, hard starts, hesitation, or emission issues with the vehicle. After doing some research I ran across this product and decided to make my service vehicle a test subject. I followed the label instructions. As it turns out, in the "10 minute driving at highway speeds" portion of the process, I received a service call that was about 120 miles roundtrip. The first leg of the trip yielded 26.7 average and the return was 31.7mpg. Full disclosure - the return trip did have about a 10-15mph tail wind involved, but still the improvement was highly measurable. The test vehicle has a 154k miles on it and has never had a fuel system cleaning outside of periodic throttle body cleaning. This intake valve treatment/cleaning has definitely helped restore lost mpg's and the acceleration has very moderately improved. $13/can was well spent in my opinion. I plan to attack my wife's car as my next test subject (currently at 70k miles). I was a skeptic at first, but seeing it first-hand has been impressive. Label says this should happen every 10k. Something to keep in mind as people's miles start piling up...