Quote:
Originally Posted by BBS
Thats incorrect. Any pressure the turbo feeds in the inlets are positive. Meaning that are 1.5 bad above 1kpa atmospheric. So 1.5 bar is still 22psi above the normal 14.5psi
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BBS is correct.
Atmospheric pressure has no bearing on the turbo specification. Bar is a unit of pressure measurement. The M5 turbos create 1.5 bar (~22psi) above atmospheric pressure.
It doesn't matter if you are sea level or 5000'. Cylinder pressure will be the same at maximum turbo output. The engine won't respond as well during spooling of the turbos at higher altitude due to air density and oxygen levels but it should theoretically make rated HP once they are fully spooled.
My 2bits