Hi from Montreal Canada.
Hi from Montreal Canada.
Just bought a used 06 mustang gt stock 5 speed put in a k&n filter 13.9 101 best e.t. been using 87 octane for 1 month tried 94 octane for fun before installing predator tune wich i will receive tomorrow. wow big difference between 5500- 6200 r.p.m. lot's of guys say not so. but for me i assure you definitely a difference wanted to let poeple know because i saw to many posts saying that there is no difference.
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