zap ud know why= its the sh*t dude 99c/pl at the bowser makes a sh*t load of power if tuned right and has an octaine rating of 105 somewhere up to 7 degrees of timing can be added at same boost levels and it smells pritty to boot just check the prices of c16,martini,elf and then way up the pros and cons, e85 all the way cheepest power going around