[Mike@N54Tuning.com]

What happens if you run the JB3 Map 8 on 92 gas

[Brey335i]

Originally Posted by cn555ic

Detonation!

Detonation Who?

Detonation for You!

[hotrod182]

Originally Posted by jokergerm

I have the JB3 on map 4 right now, and i have DCI and a boost gauge, down pipes get installed on thursday, after that i would like to try map 7 or map 8

but it says 97+ fuel required, what will happen if i just run premium fuel at 92? or can i put octane booster in it, which in theroy would boost it to 100 octane.

What is the power difference in horsepower from map 4 with no downpipes to map 8 with down pipes

As long as it is cool outside, you should be okay on map#7, even though it is not recommended. I wouldn't run map #8 unless you have race fuel.

FWIW...on the JB3 I never daily drove anything but map #7, on 91 octane. Car ran as strong and smooth as any 335i out there for the same conditions. I ran over a 100 1/4 mile runs on map#7, 91 octane. Again, if you are in cooler temps, near seal level, should work fine. (But its not recommended!).

Also, now my car is CPS setback equipped, and I never use it, even under the most demanding nitrous injected runs that would make you cringe. I think many people are overreacting to this whole knock scare. I think the BMW DME does a remarkable job of reacting to knock, etc. Just how many engines have grenaded besides a couple in Sweden doing sustained high speed runs with meth/high boost conditions. I mean, in the entire nation here, how many engines actually failed due to a tune??

[tibra1]

The ejector seat is engaged and the car blows up..