Just wanted to let the m3 community know that there's been improvements in other areas as well for ISF In addition to the tune there also has been some major improvements in aftermarket suspension and braking components that have helped improve even further than the 2011 suspension update for ISF. Here a few of my favorite suspension and braking components currently available for the F from one of favorites.
Revised LCA bushings from RR Racing and FIGS that not only improves camber and caster but one of the biggest benefits increase steering feel. An area that the M3 has excelled in. Now the F with this component has drastically steering feel of ISF.
Penske and Ohlins now both offer coilover setups for the ISF these are top notch race proven companies. You have another company like figs engineering that offers its mega control arms and other suspension components.
You have several companies producing even better calipers and rotors it then the factory brambles ranging in price from $800 - $16,000.
