dodge ram U7137 predator
Posted: Wed Jul 28, 2010 3:50 pm
I noticed when placing a tune in my dodge ram 4.7 that there is only 87 and 91 tune. Is 89 tune the 87 tune with midgrade gas added?
there is no 89 octane specific tune...
you can use the 87 octane tune with 87 or 89 octane gas....