[HBspeed]

All this inevitable 4 vs 6 cylinder talk makes me wonder...

What is keeping M from taking the S55, ripping out the turbos and all associated plumbing, intercoolers, etc. Saving a good amount of weight in the process. And then tuning that base S55 engine the best they can on whatever their budget?

I would image people would go nuts for this Naturally aspirated S55 in an M2. It would avoid the inevitable M235i comparisons of having a 4 cylinder, and make all the enthusiasts and cylinder number lovers beyond happy.

What would the weight difference really be between a hypothetical S20 and an S55 without the turbos and all associated plumbing, intercoolers, etc.? Can't be that big I would imagine.