Missing link map bypass


Senior Member
Hi those anyone as the missing link bypass valve?
I want some really good pics.
I want to know how the it works, with a spring and ball i heard.
I want to know which side is the ball and which side is the spring.

Can anyone help me?



Staff member
ummm i think you are thinking of something else.

the missing link is a device that fools the MAP sensor on the ECU into thinking it is always 0 or 1 psi. anymore than that, and the ecu will throw codes. So, the missing link takes the real reading from the map sensor, and translates it into a little above 0 psi.


Senior Member
i know that that is the function. But i want to make one my self. That's why i want to know how it works(the internal)


Super Moderator

it sounds like a useless device to me