Originally Posted by Lou275

Hey everyone, how are you cars feeling after even more miles passed?

Background info:
Asking because I am considering Stage 1 on my 2018 S450 Coupe 4matic (m276.824 and the 500Nm 725.048 gearbox). Just installed the pre-facelift S63 coupe exhaust on it (bolt on except the flaps, which I kept open because on the s63 are vacuum activated and mine are electric); will be installing blow-off valves, the wagner tuning intercooler, and considering deleting the secondary cats and keeping the H pipe (images below) which as it seems were not present on the pre-facelift of the car - same engine and tune, but called S400. Not sure if any of the usual intakes will fit my car, will have to take some measurements. The car has almost 50k miles on the clock and will be changing now spark plugs, trans oil, diffs oil, and finally adding cera tec with the oil change.


Pre-facelift


Mine now (facelift):