Quote:
Originally Posted by mousitch
If these numbers are legit, that is quite impressive. There are tuners out there that have been doing nothing but software who van not come close to these numbers. It is impressive. I would like to see a second dyne on another forum members car before we call it solid. How safe is this tune? Does it allow safety ratios in the f/a ratios? 27rwhp increase is awesome considering no one else can break 20 on a stock config on 93 octane. Hmm. I've had two other tunes on my last z4 so that's the only reason im skeptical.
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I've read somewhere that there is no 91 octane map on the stock ECU, only 89 and 93. I have no idea why BMW would do this when half of North America uses 91 octane. Regardless, some of the gains might be because the car was taken from an 89 octane BMW map to a 91 octane aftermarket map.