BMW E46 DISA VALVE - The WHAT, the HOW, and the WHY it WORKS & FAILS [2021]

THE BMW DISA VALVE on your E46 with the M54 engine plays an important role in creating performance and fuel economy. But what's its purpose in the intake system? How does it work? And how does it FAIL? If you have strange noises in and around the intake manifold, and a lack of high-end performance, the DISA Valve could be the cause. To give you an understanding I give you all the answers to better understand the DISA Valve and fix the problem. ⭐️ Error Codes possibly associated with a Faulty DISA P1083; P1085 - Lean Condition P1090; P1092 - Front Oxygen Sensor Lean P1087; P1089 - Oxygen Sensor Slow Response P0311; P0316 - Cylinder Misfire P0174 - System Too Lean ➡️ NEW Replacement DISA Valve from ECS Tuning (this is an Affiliate Link). https://click.linksynergy.com/deeplin... ▶️ DISA VALVE Upgrade Kits www.germanautosolutions.com www.x8r.co.uk (These are not affiliate links). 😎 Thanks for watching, and I look forward to seeing you in my next video.