I have a early 99 7.3 l with ts 6 pos pillar gauges wicked wheel I was having problems with my ts getting way to much fuel and was only getting 10 to the gallon in level 6 i use to lay in the throttle and my truck would move and and it would smoke so much but now if I put the hammer down I can barley get over half throttle and I lose the throttle in level 6 and it makes a odd noise palmist like a rev limiter but it's not its just odd it didn't use to do it but I also wNt to reburn my ts with custom tunes and I wanna know what's the best for a early 99