Sorry to say this but this is not helping me!! I am a newbie and only 16 i have low money and i am starting to get aerobatic with my chopper!!! Which is a nexus 30 and I know i should get a better chopper but i just cant afford it!!!! And not even an engine right now! Now could someone who actually could help a bit tell me which tuned pipe is best to fit on a os32! Please!