]http://shop.store.yahoo.com/hopup1/poenpbc...co60.html[/url]
Like the one in the link, installed one in my GTR, but don't know how to use it. Am running 1 bar boost, but would like to turn it down occasionally, but turning the gauge dial does nothing.
Instructions are in japanese, does anybody have an english manual or know how to use one of these damn things??