TTschwing

Yup...My design boosts earlier and in a pretty linear fashion. It limits Max boost too like the one you describe. With the turbo issues S4's have, it's probably a pretty good safety valve hooked up that way.. Mine acts more like a variable N75...Hence No need to experiment with H or J or whatever....Just an orfice size difference anyway, the N75 duty cycle never changes being ECU driven.....

kodeTT

isn't there any other place other than Forgemotorsport.com where you can get Samco hoses in different sizes?

TTschwing

You can get from Hosetechniques (up to 1 inch). Lots of places carry various sizes, bends, reducers, couplers etc, but most of these are 2 inches and up. Hosetechniques, Baker Precision carry this stuff...