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Old 24th December 2017, 20:28
mcramsay mcramsay is offline
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Hey Phil, thanks for pointing that out but the pressure regulator on the m3 engine (s50b32) is vacuum controlled and changes the fuel pressure depending on manifold pressure. The m3 runs higher than standard fuel pressure so normal working pressure is 4.5 bar ( rather than the normal 3 bar on most injection set ups) but requires over 5 bar on full throttle.

Different from any other bmw engine aswell which is just another thing on why the m3 is not a simple engine choice!
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