That was my understanding about the base chip. I don't have the time to look it up right now. Heck, I'm still at work. ugh.
If you're not knocking at 14 deg w/89 you would see more power, theoretically. Since 89 burns easier and a little hotter, it would make more power. That's why you use higher octane, to keep it from burning too soon.
Anyway, I'm going to eventually run 14 w/91 out here. If I could run 16, I'd do that, since I think 15 would be best. I'm putting in the upr t/a and bbk pullies this spring.
Something tells me I may have bought the bbks from somebody here?
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1997 Mustang GT "The Freak" - 13.80 @ 101.70, 2.07 60'
1995 Honda VFR750 - not much @ really fast (actual data pending.)
1964.5 Mustang 289
Rice Haters Club Member #13
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