I was woundering which pipe is the best to use on the crf 230. Here in South Africa we get most makes but pay through our noses. I would pay R6500 (Rand) for a full FMF and R 3000 (Rand) for a Pro Circut T4. I want to know which pipe will give me the best performance. Ill have to change or drill the jets, change the air filter for more air aswell. I like the look of the T4 but that does not make for better power distribution. Please advise if you know