Cobra Sport 3" Primary De-Cat Downpipe Performance Exhaust - BMW M4 (F82) Coupe (2014-19) M135i "The stock plastic covers are

"The stock plastic covers are now showing their age

So the cooling of the charged air is not realized by the ambient air as cooling medium (as usual)

the stock inlet tube is made from cast aluminium which ends up with a rough internal surface

A standard car will accelerate well up to 5500 rpm

BEFORE | Stock

Cobra Sport 3" Primary De-Cat Downpipe Performance Exhaust - BMW M4 (F82) Coupe (2014-19) M135i "The stock plastic covers areCobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience. Our sports exhausts range is fully guaranteed to give you assurance of our quality. The Cobra Sport catless turbo downpipes produce a deeper exhaust note and allow the turbos to spool quicker for sharper throttle response and power delivery. Matched with a re map, this part allows for significant power improvements. This