Well, my TBI is on my tow rig... so it never sees off camber, hill climbs, etc... and the tunability for a TBI is very limited...
And after dealing with Ford MAF injection, TBI is a shitty system...
Good thing I know a GREAT carb guy that for a few bucks can tune my truck to run right w/ a carb and probably make it run better than it does w/ TBI, as well as get better MPG and make more power... I may as well go for it this summer...
I would never go carb on a wheelin rig, but I would be hard pressed to convert a wheelin rig to TBI w/ all the other options available (other injection, propane, etc...)