exup valve or not
Posted: 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
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