Originally Posted by
martysmartie
No by stage 2 boost I mean the pressure he is running "Stage 2 tune" AKA a 195 chip, nothing to do with staged boost control, I think this is where you are got confused.
I am fully aware of the MAP sensor's purpose, what I said in the first post was "The chip has a predetermined boost limit" which it has, generally speaking remapped chips still have boost limits, although can't speak for ERST.
Martin
Ah I see what you mean, but as you say your not up on your ERST's, there is no 195 chip thats for the Fiesta RST's which have totally different management and are EFI for a start, 99% of ERST chips have no boost limit and only a few retain the ACT/Knock retard/boost cut, mostly it's all removed.