Interesting reading. I own a 2014 4/4 Sport. The improvements I have made are: panhard rod, break reaction bars, K&N filter, AVO shock absorbers on the rear suspension and the 125 lb springs (of the Roadster) on the front suspension. The plan for this winter is to exchange the exhaust. Cain from Wolf has a very nice manifold and a sport cat is relatively cheap (€ 200). Spring next year I will go for the remap by Cain.
Changing, the too weak standard springs made an enormous difference in roadholding and no more kling-klang when hitting speed bumps or potholes.
