[M4TW]

I want 400 whp. I'd have to see some rw dyno results before deciding whether this car needs a tune. I'm not a piggybacker. I'd actually be hoping that Dinan comes out with a flash tune because of the warranty and a mild boost should be all that is needed to get to my goal. I also want to avoid the "in for a penny in for a pound" mod disease that infected me the last time around with my 335. One of the reasons I went for the M4,and am paying dearly for it, is I'm hoping for out-of-the-box perfection.