Thanks for the reply. I knew some of the info I recieved was wrong because I did know all the high flows were the same. My tune for the heads for all the above is basiclly the same. Know when you run them the 9's do run different because of the track difference. They came out and checked one in the field and good grief at all the computer test they ran. They are as bad as cars these days.
Bleed, have you seen how some dealers are cutting the rear doors and adding vents in them. That has helped some Cat's I have seen with cooling problems.