why want tuner's work on obs's

[longhorn795]

so i was wandering my uncle has a diablo Predator for his 99 powerstroke why want these tuner's work on obs truck's? we were going to plug it in but dont want to fry anything

 

[94f450sd]

They do work but the obs prefer and respond better to chips.your buddies programmer won't work on your truck cuz its for the 99-up sd.you need one for the obs but would be a waste of time and money.a custom burnt chip will be money well spent