Bmw 335i Octane. Jb4 rb upgraded turbos exhaust dci meth injection. If a gas station is out of the minimum rating you need simply just go to the higher octane fuel with no issue.
Turbo charged vehicles like your bmw 3 require a higher octane fuel to prevent knocking due to the higher cylinder pressures in your engine. I often fill at costco and all they have is regular 87 and premium 93 so i ll use 93 there. I have a 2011 328i and although bmw recommends using 91 octane fuel i was considering trying 87 or 89 octane fuel.
Various jb4 dynos from a 2008 135i with bms dci exhaust and intercooler.
Turbo charged vehicles like your bmw 3 require a higher octane fuel to prevent knocking due to the higher cylinder pressures in your engine. Dyno test results stock untuned bmw 335i turbocharged. As stated above you can run a higher octane fuel but there will be no benefit. I was wondering if anyone has tried running lower octane fuels.
