jcr159
Well-Known Member
all that said, the 250SHO requires 89 on the factory tune anyway... No corn here is 90 octane...Yep - I call anything that isnt regular "high-test." 89/rec 90 or whatever mid grade is available is what the tune requires.
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all that said, the 250SHO requires 89 on the factory tune anyway... No corn here is 90 octane...Yep - I call anything that isnt regular "high-test." 89/rec 90 or whatever mid grade is available is what the tune requires.