Quote:
Originally Posted by Supra
... Does anyone know what the stock max boost pressure is on a M57? What I may do first is hook a boost gauge up so I can see what pressure it actually gives way at.
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Stock boost is a tad under 2 bar (26-28psi). It varies a little on what car (530d, X5 3.0d etc.) but they are all around this. Some tuners hike it up as high as mid-30's...