Autoblog has some good skepticism on their website. Words like 628 horsepower, V10 and M3 catch our eyes. We love good recipes and this sounds like a winner. Dinan has modified the V10 for the M5 and M6 but want to stuff the crap out of the new M3. Instead of turboing or charging the engine, they bored and stroked it, increasing capacity to 5.7L and 628hp. No official announcement or photos, but c’mon, we can smell it coming.