Quote:
Originally Posted by ShocknAwe
Arguably the N55 will sound better. Most would say the S55 sounds like a UPS Van.
Straight line speed? Tough on N55 without significant turbo work.
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Lol, yeah a pretty common theme over on f80post is guys generally don't like how they sound! They like the sound when they go single turbo though.
I agree with the speed. With the stock turbo, you can upgrade hpfp and run an e-blend fuel and hit upper 300's for whp. But you can do really well if you're willing to upgrade the turbo. I'm not sure about 2010 and early 2011's, but realoem shows newer n55's run the same rods as s55. Same compression ratio, same valve sizes and lift, so if you upgrade fueling and turbo you can get very comparable results to s55. Not a lot of people choose to though, so it's not as well known. The Big Boost guy is running 750 whp on his stock block n55 by using an appropriately large turbo, and limiting torque in the tune in the lower/mid rpm to save his rods from bending.