Autotechnik + Tuning has done a job on the BMW M3, but if you don't look closely, you might miss it. Echoing a sentiment we love, they declare "At first glance you cannot estimate the scope of retrofitting." However, while we appreciate their tuning philosophy, we're not so sure about their tuning math.
ATT adds a supercharger and remaps the engine software, all of which bumps the M3's horsey count from 414 to a nice, round 500. To get that bad boy in your engine bay will cost you a tear-shedding €11,749 ($17,455 U.S.). But that's not all: a new exhaust, KW coilovers, and ATT-TEC Le Mans wheels on 20-inch rubber will add more than €7,000 ($10,399 U.S.) to the line at the bottom of the invoice. Those are the kind of numbers that'll give you a concussion, especially when we're talking about an 86-horsepower improvement.
Either way, you can read about it in ATT's own words in the presser after the jump, or check it out in the gallery of photos below, and if nothing else, at least that's free.