M-Series (M1, M3, M5, M6)General M-Series Discussion - If it does not fit into a more specific M Category above, please place it in here. In addition, previously archived M-Series discussion is located in this section.
If you were to Turbo it, then possibly. Depends on a lot of factors, including compression ratio. Supercharging usually keeps the same compression ratio IIRC. I was looking into getting the Active Autowerks supercharger kit for my car and with the software they use, they tell you to use at minumum 91 Octane. I have 94 octane available at several gas stations and i really dont think the cost is worth it. Even with the 135, I dont see the cost worth it. Run 91 octane and you will be fine.
Indeed - if your car is TUNED for it - sure there is a big difference. DINAN tuned my stage 4 race kit S3-R ///M3 for 100 octane or greater and it performs way better. On an NA car - save your $$$ - although I'd still do 93 not 91.
2008 ///M5 with Eisenmann race exhaust "Athena" 2011 X5 - Loaded - N55 twin scroll turbo 300hp RIP 2005 Dinan ///M3 S3-R+ Vert w/hardtop- 6-speed, DINAN SC - race kit, race headers, etc. RIP 2002 Z3 Roadster 2.5i - VF Supercharged, 5-speed, Brembos etc. Turkey ///M Car Fleet Commander
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