I have the Powershot 2000 system installed on my '91 Ram 250 - works GREAT, and I heartily recommend it... BUT, I now have a new '02 truck, and am wondering if any owners of the newer 24 valve engines have any comments as to the adviseability of propane in those engines - I already figure to install a chip setup such as the EZ, but not sure what to expect if propane is used along with the performance boxes...