I SECOND what BXSI said about watching the bottle.
I recently installed the Snow Performance kit and with straight alcohol, the car will not ping what so ever. As soon as that bottle ran out...I would start to hear a slight ping. This tells me that my Hondata was tuned very aggressively without the water injection. This is probably why I am making 252 horsepower on a dynapack.
Anyhow, it would be interesting to see how much more horsepower I can extract..... as soon as I can save up some cash, I will head back to the Dyno.
