93 octane worth it?

Island_370

With my previous turbo'd car, I could tell..but I was running a chipped ECU that was tuned for 93. The 91 caused it to pull timing (1 degree of timing is ~5hp).

With the Z, I had a tank of 91 once but can't say that I could tell. Maybe at the track once heat causes the knock sensors to start to come into play......I might tell the difference. But for street use on a stock tune....I would hard pressed to say I would notice a difference on a NA car.

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Autobahn Country Club (North and South Tracks), Blackhawk Farms, Grattan, Gingerman, Mid-Ohio, Putnam Park, Road America, Sears Point, Thunderhill, VIR and "The Ring"