[Eyeman]

From what I've seen from some dynos, it doesn't look like a 1M really needs an aftermarket tune. I don't know where BMW rates the 1M but it too low. Dyno comparisions seem to have it putting very similar hp to the 400hp rated M3. So I'd bet a stock 1M would dyno very similar to most non-meth tuned 135s or 335s. If a tune is only gonna gain 30ish hp, why tune and run into warranty, etc. issues. I guess I could see it more if you plan to run meth, etc.

The other funny thing though, is on a 135, a tune with supporting mods gains you more like 100hp. But then you can't find wheels that will allow you to put on big enough tires to put this Hp on the ground. For example my wheels are fairly similar to many of the 135 aftermarket wheels and I recently tried to install 255 rear Michelin PSS's and I rub very bad. A few years ago I had went as far as buying a Procede with meth setup but with just the Procede I realized meth would be fairly useless since I was already just spinning my tires into third gear even with my aftermarket LSD.