I have a 200 Ford F250 7.3, I now have 125,000 miles on it, K&N cold air system, 4 inch straightpipe. The problem i am having is with the performance setting on my programmer. When i have the performance setting on and stand on it it sounds like the valves are floating and the HP is just not there? Any advise? I am only stating what it sounds like so i am hoping someone with more diesel experience can step in for me.