In this video, I'll be explaining ignition timing. Things like ignition advance and retard, burn rate or flame speed, two-stroke and four-stroke timing curves, combustion and detonation and other related topics including calculating crank angle (degrees) from piston position (mm BTDC) and vice versa. Then I'll advance and retard the ignition timing on my TPR 86cc two-stroke scooter with an MVT Digital Direct ignition to show you how that's done and do some test runs to provide real world results. Watch and see if ignition timing changes are of any benefit for me and hopefully pick up useful tuning info along the way. **Please remember that improper ignition timing can cause all sorts of problems, so use this information at your own risk.** ✅Tip Jar (Did this video help or entertain you?)✅ https://paypal.me/49ccscoot Calculators : https://www.49ccscoot.com/calculators.html MVT Digital Direct Ignition Install/Setup Video : https://youtu.be/JVZr74Lt0DQ What Does Detonation / Spark Knock Sound Like? Video : https://youtu.be/lGC51mIQylk Thank you for watching! Please Like and Subscribe if you enjoy the content! Click the bell when you subscribe to make sure you get notifications. Find all of the videos in the TPR 86cc playlist : https://www.youtube.com/playlist?list=PLm3-Rt5jsoluxD_r--k5i85EP1yZ-EjWT Check out the merch : https://teespring.com/stores/49ccscoot Patreon : https://www.patreon.com/49cc