May be the check valves place in-line, cause a problem in the way that the MAP sensor reads vacuum.

They might cause enough resistance in the airflow through the line to prevent it from reading vacuum correctly...I don't know.

But even if it won't work to place them in-line, there's still nothing wrong with questioning the "old way" of doing things.

This is how we find better ways of doing things...or even if it's possible.

It keeps us thinking.

 

I've heard that the Missing Link works well.

Does anyone know if it vents to the atmosphere?

 

Yeah I orginally had them like in the picture and I couldn't figure out why my car wouldn't idle. The only plausible reason is that the check valve is like a resistor and reduces the vacuum that the map reads. Either that or it delays it. Anyway, I think the missing link releases to the atmosphere. I'm willing to pay $70 to see if it works better than my check valves. I'm such a sucker :P

 

I ran a Missing link till i went with the afc hack, worked like a charm, never had any problems with it at all!

BTW its still for sale and looks and runs brand new!