Stock power output with CA 91?

bmwstephen · 10-02-2023, 11:46 PM

We all know that even the factory tune pulls timing with CA 91 pump gas. I am curious if anyone has dyno’ed it to see how much worse it is than official stated numbers?

captain slowly · 10-03-2023, 03:41 AM

I don't think its just octane. Dyno variance is real, so I don't think you'll get useful info, but seeing as I live in an area where we have 93 octane, on a dynojet at RK tunes a stock M2C made 406-408whp, so you can use that as a reference when someone posts 91 octane numbers.

3t3p · 10-03-2023, 05:02 AM

This is OG forum section lol

10-02-2023, 11:46 PM	#1
bmwstephen Private First Class 51 Rep 154 Posts Drives: 95' M3, 17' M2 Join Date: Mar 2018 Location: Bay Area, CA iTrader: (0)	Stock power output with CA 91? We all know that even the factory tune pulls timing with CA 91 pump gas. I am curious if anyone has dyno’ed it to see how much worse it is than official stated numbers?
	Appreciate 0 Tweet Quote

10-03-2023, 03:41 AM	#2
captain slowly I like turtles! 726 Rep 698 Posts Drives: '21 M2C 6MT Join Date: Feb 2017 Location: Long Island, NY iTrader: (0)	I don't think its just octane. Dyno variance is real, so I don't think you'll get useful info, but seeing as I live in an area where we have 93 octane, on a dynojet at RK tunes a stock M2C made 406-408whp, so you can use that as a reference when someone posts 91 octane numbers.
	Appreciate 0 Quote

10-03-2023, 05:02 AM	#3
3t3p Major 455 Rep 1,389 Posts Drives: M2 Join Date: May 2018 Location: NZ iTrader: (0)	This is OG forum section lol
	Appreciate 0 Quote