Quote:
Originally Posted by Anthony235
power potential on stock turbos goes like this (least to greatest)
n55
n54
b58 (might be tied with n54).
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I was reading a review on the B58 and the turbos are said to have a 6 percent increase in turbine wheel size and 10 percent increase in compressor wheel diameter (over the N55).
I never owned an N55 and having had our drivers deal with turbo lag on the N54, I guess that is the big advantage going N54 to N55. Apparently BMW found a way to virtually eliminate the turbo lag and supposedly such is the case with the N58 as well.
Now the other concern is how easily the N58 will be able to be tuned. Another article I read rated the N54 the most tunable of the 3 with the M2 engine also more tunable than the N55 and N58.