the F20 M135i should essentially be the m235 but with a hatch, unless I've missed something?
No overheating issues with the engine, per say, but if tracking the OEM pads/fluid will show you their weaknesses very quickly. Engine heat soak is real, a FMIC will aid in keeping your IAT's down while giving the car no mercy. Aside from that, just your basic turbo car bolt ons is all you "need", track pads/tires is going to make the biggest difference to your experience, imo.
|