I loaded up revo TNT this morning and did some testing on the low SW's to compare to 4.4 and I dicovered something I thought was interesting. I was having trouble hitting over 36psi on tnt SW 3, so I thought that i must have forgotten to turn the wastegate off, so I checked it and It was off. So I loaded tnt SW 4, and then I could hit about 38-40psi and egt were hot fast. I thought this was wierd because I could hit 48-50psi with 4.4. Then I was cruising down the freeway and I hit the TC lockup switch and I could easily hit 48-50psi again. Now I can't remember if I had the TC locked when I was testing 4.4 so I loaded it up again to see what I can do. Has anyone else noticed this whith the TC lockup? sorry for the long post, I'll update later when I test 4.4 again. Side note I think 4.4 is better on my truck, cooler temps and more power without running the rail dry, and less smoke.