well, i just threw on my old carb so i could hit up a track tomorrow after school. I have been having an issue with my engine pinging at a certain RPM range under hard accel. Turns out, the dynamic compression ratio has been biting me in the ass with this pipe, i threw in some 110 octane race gas (yes, i can buy that stuff at the pumps) just to aid in the trouble shooting process, low and behold issue gone! Im going to try mixing some of that with some 92 octane gas and see how that goes next (be cheaper as well).