Did you or did u not??
 

hey just wanted to know if you guys used those vacuum check valves when installing your BOV or wastegate, if so which way? should be vacuum into the engine from the bov or wastegate right?

Re:Did you or did u not??
 

what?? use check valves on a bov or wastegate.. dont think so. you shouldnt have to use check valves anywhere unless you are doing a ghetto fmu setup.

If you are using a fmu (bad idea) then use check valves ONLY on the map sensor. Make it so the map sensor cant see boost, only vac.

do your engine a favor and at least get a btm/afc/450cc's, you can boost higher and be much safer.

Re:Did you or did u not??
 

hahaha nevermind i guess, nah i aint using an fmu, i got A SMC and 450cc injectors