The N52 tuned to 258hp in the '05 & '06 E90s (and even more hp in other cars) is the legacy straight 6 NA motor. It was also mated to the superior ZF automatic vs the clunky GM in the 328 - would definitely give the N20 a run for its money.
The one in my '06 330i was so smooth and sounded so good I almost didn't mind being screwed when the 335 came out months later!
Last edited by xG35c; 04-06-2013 at 09:44 AM..
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