Quote:
Originally Posted by Maverik259
Hmm doesn't seem like enough to get over a 100 more ponies. Anyone know what PSI the M runs at? Stock 50i is like 13-14 right?
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I can't find a definite answer about N63TU stock boost, but previous generations had max boosts: N63 0.8bar (11.5psi) vs S63 1.3bar (18.5psi). So I think you are right - X5M has bigger turbos, but also run at higher max boost.
For N63TU, I was trying to find info, but I couldn't find anything. If anyone will find out, please share. I know S63TU (current generation) has 1.5bar max boost (21.5psi). So BMW increased it by 0.2bar (3 psi). Maybe same was done to N63TU? But I'm not sure yet.