I Installed a New Valvetronic Exhaust on my F80 BMW M3! + Driving Footage!!

In this video we replace our stock exhaust system and downpipes on our BMW F80 M3 with a full exhaust system from Stone Exhaust. Stone Exhaust sent us their catless downpipes and valvetronic exhaust system for the F80 F82 M3 M4 S55. Watch the video to see our installation process as well as our thoughts on the exhaust system (plus some driving footage with the aftermarket exhaust and sound clips ). You can find out more about the exhaust system and the company down below:

https://stoneexhausts.com/
https://stoneexhausts.com/products/st...
https://stoneexhausts.com/collections...
Instagram: stone_exhaust
Facebook: stoneexhaustUSA

F8X M3 M4 Downpipes Install DIY:
How To Install BMW F80 M3 F82 M4 Down...

Parts Links:

Turbo to Downpipe Gasket:
https://click.linksynergy.com/deeplin...

Downpipe to Section 1 Gasket:
https://click.linksynergy.com/deeplin...

Downpipe Flat Flange:
https://click.linksynergy.com/deeplin...

Downpipe Flange Torx Screw:
https://click.linksynergy.com/deeplin...

Turbo to Downpipe V-Band Clamp:
https://click.linksynergy.com/deeplin...

Downpipe to Section 1 Copper Nuts:
https://click.linksynergy.com/deeplin...

Exhaust Mount Pliers:
https://amzn.to/3yTXEe0

Stone Exhaust Cat-Back System:
https://click.linksynergy.com/deeplin...

Stone Exhaust Downpipes:
https://stoneexhausts.com/products/st...

Torque Specs:

Downpipe Bolt/Nut Torque Specs: 14 ft lb
V-Band Clamp Bolt Torque Specs: 10 ft lb
O2 Sensor Torque: 37 ft lb
Engine Splash Shield (M10 16mm Bolts) : 41 ft lb + 90 degrees



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0:00 Intro
0:28 Unboxing Exhaust System
2:01 Start Removing Stock Exhaust
2:31 Removing Downpipe Nuts
2:43 Removing Stock Catback Exhaust
2:49 Removing Stock Downpipes
2:59 Removing Exhaust mounts
3:13 Transferring Mounts
4:34 Installing Valve Motors
6:27 Comparing Stock vs Stone Exhaust
9:37 Transferring O2 Sensors
10:07 Changing Downpipe Gaskets
10:39 Installing Downpipes
10:48 Installing Middle Flange
11:05 New Cone Gaskets
11:38 Installing Section 1 Exhaust
12:03 Installing Section 2 Exhaust
14:12 Installing Muffler
15:10 Tightening Everything
16:16 Carbon Fiber Exhaust Tips
16:33 Cold Start Comparison
17:09 Driving Comparison Footage
21:15 Final Thoughts/Review

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