Francisco Martinez

Greetings,

Playing with the Zeitronix, I did a 2nd gear pull rolling from 2060 rpm then WOT to 5700 rpm and got the graph below that shows a boost spike of 20 psi when letting off the gas. I have a billet BOV with different springs, could this have something to do with the BOV? Should I go with lower spring or higher spring pressure?

Francisco Martinez

I am searching and reading....my boost sensor placement is on the intercooler tapped outlet next to the BOV outlet? Is this spike normal given the location of the sensor or is it still to high?

Metal Guru

When your throttle plate snaps shut it is normal to get a boost spike. It's a transient before the bov opens.