Originally Posted by
martysmartie
Depends on what the predetermined limit that chip has been programmed. The boost you mention is stage 2 boost but as said thats the peak or "Spike" the held boost is what you have.
Of course the ECU knows what boost pressure (manifold pressure) your running, thats what the MAP sensor is for
lol
Stock RST's have a boost cut around 9/10psi, which is removed when you chip the ECU, some chips also have a different timing map like the Ahmed Bayjoo chips for example.
There is a difference between controlling the boost and being aware of it...