check valves

do you guys have these on ur cars? Where do u mount them? I heard of electronic ones, do any of u guys use this?

you have to use them or the MAP sensor will have a fit and give a CEL (if you’re using the OE computer). If you want to do it right get a Missing Link check valve, if you want to do it wrong use aquarium check valves (notice I said valves, plural, with the Missing Link there is no guess work…it just works…)

Hey you think you could show my a picture where you put them?

With the Greddy Blue Box I had to remove my missing link. Before the missing link I had to use 2 check valves.

What is a greddy blue box?