Whats better for Tuning

[Wayne 0]

Have these 2 options , which is better

[foff667]

load bearing is your best bet whether dynojet or mustang.

[tblu92]

The dyno is a good device to see what your WOT RWHP is---However my opinion is that the 1st step in tuning before you dial in your WOT AFR is to dial in your Part-throttle fuel trims--If these are off positive, your ECM will always add fuel when you go to WOT--not a good thing-- so to answer your question I would say you need a "street driven tune" 1st rather than a dyno tune because it is the only way to hit all the cells correctly by driving it various ways on the street.