Originally Posted by Ironring Racing
Well, what do you think it is? It's a factory tuned 335. But to be fair, that's exactly what the M3 has always been of course, a factory tuned 3 series. We just got used the M3's and M5/6's having bespoke V8/V10 engines. Now they're just tuned versions of the stock ones.
e30,e36,e46,e9x base models you can´t get whit 2k$ same power that M-model (whitout FI) you need to which whole engine. Yep M- means lot more than just engine, but the intake roaring on cabin is just the special thing in I6.