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Originally Posted by CanAutM3
In what terms is it a “big step above”? Technology wise, it offers nothing above the S55. Yes, makes more power, but it simply makes it through bigger turbos at the expense of increased lag and a higher boost threshold.
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It's a step above in the only metric that matters and that's performance. Take a look at the 3.3 sec 0-60 mph and 11.6 mph 1/4 mile times of the X3M for proof of how potent the engine is. It's a monster and let's face it, the B58 is almost on par with the S55 performance-wise as the Supra and M340i are faster than the F80 M3/M4 in a straight line. The S58 is B58 in steroids. The S55 was and is a good engine but the B58 and S58 are simply newer and better designs.
Don't take my word for it as MB fanboy Jonny Lieberman can't even deny it;
https://www.motortrend.com/news/2020...n-test-review/
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"It drives much faster than only 503 hp would have you believe," Lieberman said. "It pulls hard, and then over 6,000 rpm it really starts pulling. Beast of a motor." M3 and M4 owners will be quite happy when this engine makes its way into the upcoming G20-edition M3.
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In the company of TTV8's in this comparison not a single comment of it being underpowered and in fact quite the opposite. Once the G8x are released then people will realize just how good the engine is.