exup valve or not

imthedude · Post by **imthedude** » Sun Feb 19, 2017 6:01 pm

Hey guys,

I can't seem to find any dyno evidence either way - some people say the exup is about noise control and emissions - others that its for lo…login to view the rest of this post

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exup valve or not

exup valve or not

This topic has 3 replies You must be a registered member and logged in to view the replies in this topic.

This topic has 3 replies

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