Hallo,

i have a question concerning the vacuum ports on the stock B16A1 intake manifold.
does it make any difference in vacuum and boost readings if i connect my map sensor to one of the vacuum ports on the back of the intake manifold (near cyl. 1), on the middle on direct after the throttle body (near Cyl. 4) or if i connect the map sensor to one of the two vacuum ports directly at the throttle body where it is also connected on the stock setup for NA engine?

i ask because i'am not sure if my map sensor ready full boost because under full boost i must get something around 4,52volt but i read only something about 3volt on 8psi of boost so its not enough i think...

and before everyone ask, i'am running a standalone ecu that can handle MAP Sensor signals from 0-5v its only a question if the pressure is different on the different vacuum connectors on the intake manifold.

Greets
Malte.

 

Possibly slight variations, but it really shouldn't matter which nipple you use.