Sounds awesome. The 20 HP increase is cool but the 32 lb/ft torque increase is even better. These N55's are such torque beasts, they already prove to be highly underrated in torque when stock already, and every little power upgrade yields such significant increases there you can really tell there's just so much "give" in that department.
I do like how they sweeten the deal with the new engine cover, rocker panel decals, etc. to make it a little further than the important power gains. The best part is the intake system, as I've been wanting to get more ENGINE noise from this car, as the I6 just makes the most awesome sound, preferably without making the exhaust all that much louder (but wouldn't mind it a little louder under WOT, though engine is more important and sounds better on this car IMO).
Though I'll probably pass for $1,100 + install (I'm assuming install won't be cheap at all). Just frivolous to me since this car is already overpowered in my congested city. Realistically I'd probably be happy with a good intake system for the reasons listed above which would cost a fraction of that.
'13 F10 BMW 535i Sport
: Jet Black/Black-Anthracite : Premium & Technology Packages/Sport Auto Trans/Camera/Park Distance Control/Heated Seats/Tinted Windows/Blacked Out Markers/Performance Spoiler.
Ex M-B's: '11/'10/'06 E350's w/ AMG Sport Package, '02 S500 w/ Every Option.