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The guy who posted it is proceded only, I think he said his 1/4 was 13.1 @ 109mph or something, don't quote me, I can't find the thread. With downpipes and some more tuning the 335i might hang front a dig; from a roll I think it'd still lose slowly, especially in the high end. I drove around in a proceded 335i all weekend, it's quick but it still loses a lot of steam over 5500rpm.