Whats the stock boost level?
 

^^^^^ What is it, ive been searching for a night and a day now, i keep getting irrelevant crap from the search engine. Oh, its an s4

For a completely stock TII, I believe it is less than 8.6 psi. Fuel cut to rotor 2 occurs at that pressure. However, actual boost levels depend on several factors including ambient air density, the health of the intake piping, among others.

A buddy of mine told me its around 7-9 psi.
But that's just talk an no proof.

S4 model
- 2000-5000 rpm = 320 mm mercury (0.42 bar/6.2 psi)
- rpm >5000 rpm = 280 mm mercury (0.36 bar/5.4 psi)
Fuel cut = Boost > 400 mm
Max turbine speed = 110,000 rpm

Right on guys, thanks. That's the quickest, exactly what I needed, response I have ever recieved.:icon_tup:

Is this in the FSM or some other documentation? I'm confident in its correctness because I've read it all over the place, but I don't think I've ever seen official specs.

all of this information is in a book that was written by Jack k Yamaguchi Mazda let this guy have access to the team that design the second generation RX 7

I might just have to find that book...