i never bought one....i live in chicago, and i've never had any problems with my cai and water/snow.Siizzzoooo said:AEM bypass valves are a waste of money. they are cheaply made and blow out easy.
i thought it was BS, then i realized how true it isZKrazy said:i posted like months and months ago about this. by putting the bypass valve on, you're actually turning your cai into a wai.