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What Coupler with Pro Circuit

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Hi

I have a T5 Pro Circuit on my KX450 2014 (europe) and ive

heard that i should run the stock green map with that  exhaust and not

the white  coupler because its to lean(?) or maby that is whats the best for aftermarket pipes?

Edited by skorpan777

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I have an FMF full Ti system so not exactly what you are running but I ended up back with the middle coupler.  It runs clean through the entire RPM range, no burps or pops and pulls pretty good off the bottom.

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I have an FMF full Ti system so not exactly what you are running but I ended up back with the middle coupler.  It runs clean through the entire RPM range, no burps or pops and pulls pretty good off the bottom.

Ok thanks for answer

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