BMW 120i Stage 2 | Bad OTS Tune vs Custom Tune

This BMW 120i came to BERK Performance with a Stage 2 OTS (off-the-shelf) tune already installed, but after dyno testing and calibration analysis we discovered serious issues with the setup. In this video, we compare a poorly tuned Stage 2 calibration and our custom Stage 2 tune, showing the differences in power delivery, boost control, drivability, engine safety and overall performance. You'll see the dyno results, learn why not all BMW Stage 2 tunes are created equal, and find out why proper custom ECU tuning can make a huge difference for both reliability and power on the BMW 120i platform. 📌 Chapters: 00:00 Intro 00:14 The truth about the cheap tuning 01:30 We got a car with already bad OTS tuning 03:35 Dyno test of the bad OTS tuning 09:21 Dyno test of the stock car 12:31 Dyno test with our custom tuning 12:51 Dragy runs 13:26 Exhaust sound and revs 13:39 Launch control and exhaust sound 14:16 POV review 21:37 Fast acceleration 22:40 Q&A with a client of this BMW 120i 28:13 Cool cars in our shop 29:14 Subscribe for More BMW Builds 🛠️ We build it, we film it – You can help by subscribing, commenting & liking! 📩 For tuning requests and business inquiries: info@berkperformance.nl What we do best: Custom ECU Tuning: From Stage 1 to Stage 3, our signature calibration possibilities, we provide perfect tuning for optimal performance and reliability. Exhaust Systems: Unique, in-house developed exhaust systems that deliver both power and sound. Hardware Upgrades: Replacing stock turbos, upgrading intercoolers with high-performance upgrades for maximum performance. Join our community of car enthusiasts and learn how to enhance your ride's performance. Don't forget to subscribe and hit the bell icon for updates on our latest builds and tutorials! 🔧 Follow us on Social Media: Instagram:   / berkperformance   Facebook:   / berkperformance   TikTok:   / berkperformance