Acetone = badass! Not only there are fuel savings but the car runs better as well. The little hesitation I had is GONE for good!

That beats an expensive fuel management system that would be needed for similar results. The car now runs so smooth, it hardly backfires at all, has very little soot on the exhaust pipe and all the power is still there (maybe even more). And, as emissions are lower (sun) (thanks to flat_black's report), what more can you ask!!? I'm on my second tank and so far, so cool!
Oh, I forget to mention that it costs me only 2 (Canadian) per liter