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      03-07-2012, 04:05 PM   #15
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Drives: BMW 335i E90 LCI, 330d E91 LCI
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Originally Posted by mkoesel View Post
Thanks for the info. However, I am sure with the proper modifications an N55 could make 408hp. After all, the N20 with single twin scroll can make almost 300hp, or 150hp/L.
As far as I know the N20 in its strongest 28i iteration makes 245hp, not 300.

And the N55 would not be reliable with anything above 350/360, certainly not to the extent Alpina would like it to be. There's a very good reason BMW and Alpina continue to use the N54 for the higher hp applications.

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