at the shop i work at here in town we use a mustang dyno, now i've used dynojets before and i am by far much more happy with the results from a md dyno. they allow you to put actual road force load on the car and allow the engine to sustain a certain rpm much longer than a dyno jet(which really feels like your just free revving a engine). I feel that you are able to get a much better feel for the engine tuning wise on a md dyno.
__________________
if you havent been in a small plane its worst, cause your eyes and brain say we are moving and your body says oh no we are not. eyes and brain go asshole we are moving, cant you see? body says fuck you we are not moving at all. so they fight and fight and eventualy your body says, you know what fuck you brain, see if you can stop this!! then you throw up.