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      12-30-2012, 06:28 PM   #4
Stupid Idiot
BMWM.D.'s Avatar

Drives: E90 335i & C6 Grand Sport
Join Date: May 2009
Location: Santa Barbara

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Originally Posted by Jeff@topgearsolutions View Post

Are you sure those octane boosters are doing anything? I would log the difference without them to put the myth to bed.

I know Terry has done a lot of testing with the stuff and it does work from the results. None of them do what the manufacturers claim, but 1.5-2 octane points when adding to 91 octane is believable.

Some good independent lab testing here:

Obviously, I'd run 93 if we had it. Meth also works wonders, but I don't want it on this car. I'm running a whole bunch of straight VP M1 on my other car.