We put our BMW 435D to the test with an upgraded CSF intercooler and Evolve tune! How much power does it really make on the dyno? Watch as we break down the performance gains and see how it stacks ...

The BMW 435d xDrive M Sport Coupe. Decode that impressively long name, and you get a 3.0-litre straight-six diesel-powered 4-series Coupe, with four-wheel drive. It’s one of the few 4 Series ...