93 octane worth it?

Island_370 · 01-30-2010, 06:31 AM

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.

ChrisSlicks · 01-30-2010, 09:14 AM

91 and 93 will perform identically in our cars. Fill up with 100 octane and you notice a difference, but not because of the higher octane, it's because 100 octane is oxygenated.

01-30-2010, 06:31 AM	#1 (permalink)
Island_370 Base Member Join Date: Jun 2009 Location: Puerto Rico Posts: 228 Drives: 09 Nissan 370Z SR M6 Rep Power: 18	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. __________________ Autobahn Country Club (North and South Tracks), Blackhawk Farms, Grattan, Gingerman, Mid-Ohio, Putnam Park, Road America, Sears Point, Thunderhill, VIR and "The Ring"

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01-30-2010, 09:14 AM	#2 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 655	91 and 93 will perform identically in our cars. Fill up with 100 octane and you notice a difference, but not because of the higher octane, it's because 100 octane is oxygenated.