BMW F82 M4 Flap Open Closed Comparison Akra Downpipes + full Exhaust System 200 cell HJS cats Part 1

Exhaust sound of:

2014 BMW F82 M4 Coupe DCT
stock 431 HP and 550 Nm
S55 3.0 Biturbo inline 6
7-speed Dual clutch transmission
1612 kg
BMW M Performance Grills, carbon flaps, matte black front lip, matte black side skirts, carbon trunk spoiler, carbon diffuser, alcantara steering wheel, carbon gear selector
Exhaust flap controll bimmerlink (https://youtu.be/B6-LC6jc3cA)
Akrapovic Downpipes
Lightweight Stainless Steel Exhaust System PERFORMANCE incl.
200 cell HJS Catalyzer with M-Performance style carbon fiber
exhaust tips.
KW Variant 3 coilovers (Lowering 40mm/40mm)
Yido Performance YP-FF1 FlowFlorged 20" wheels brushed grey
0 - 100 km/h: 4.3 sec (with stock downpipes)
100 - 200 km/h: 8.5 sec

Hawkeye WRX STI 330 HP Onboard driving video: https://youtu.be/A8fdo8lNUuQ

Fast Ride with a Stage 2 BMW E92 335i N55 xDrive 385 HP: https://youtu.be/XxmdmBxdeO8

2017 X4 M40i Cold Start Stock Exhaust F26 BMW: https://youtu.be/fRYS6d_Lv_8

Practical for car wash, cleans all gaps:
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I use this tripod for my videos:
http://amzn.to/243zfvJ *
- it is fixed quickly
- magnetic feet
- fits into the trouser pocket
(* These are affiliate links, if you want to support me, then you can click on the link to buy from Amazon. So I earn a small commission.)

Key words:
M4 coupe DCT
exhaust sound very loud
flap open closed comparison
Lightweight performance exhaust system
HJS 200 cell cpsi cats catalyzer
Akrapovic downpipes
F82
bmw

S55
rev
M Perfromance