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From: clear lake, Texas

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From: Ft. Wayne, IN

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From: PNW

You’re not going past 10:1 on 87 if that’s what you’re asking. But even at 10:1, your PCM is going to detect too much knock in the higher RPM’s and revert your time table and cut a **** ton of power. It will be fine to daily but you’re not going anywhere with 87 as far as racing it.

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From: PNW

When I say higher revs I mean above what most any auto is going to shift at during daily driving. Figure anything below 3500 and you’re not going to notice anything. Jumping on the highway at full throttle - yeah, you’re gonna feel a power loss.

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From: Tucson AZ

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From: Central Cal.