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IMPOSSIBLE! Really? In this first video of a series, we try to improve the performance of a Chinese 4-stroke scooter like GY6: and it's not easy! Level 1 starts slowly with the change of the CDI: a test of a RACING CDI! Well... we're going to try. The parts mentioned in the video: the blue NARUKU CDI: https://www.scootfast.net/boitier-cdi... the unbridled CDI equipping my used scooter, which works and is adapted to the 4-stroke kisbee: https://www.boostycom.fr/électricité/137... ???? SCOOTFAST PROMO CODE: SIMON03 ☕To follow me on INSTAGRAM, and ask me questions: https://www.instagram.com/p/CD1_0Aini... ????To support him: the tipeee link: THANK YOU!! https://fr.tipeee.com/le-chant-du-cli... ???? Small links to essential tools for disassembling/reassembling your two-wheeler: the essential 1/4' torque wrench: https://www.amazon.fr/gp/product/B08Z... and an even cheaper one on aliexpress: https://s.click.aliexpress.com/e/_AFBbHa the 1/2' torque wrench: bigger but also useful: https://www.amazon.fr/gp/product/B01N... A very good electronic caliper and always useful for this type of measurement: https://www.amazon.fr/gp/product/B082... and even cheaper on ALIEXPRESS: https://s.click.aliexpress.com/e/_A6iEEi Booster variator block: https://www.amazon.fr/gp/product/B07J... Clutch disassembly key: https://www.amazon.fr/gp/product/B071... Ignition lock key: https://www.amazon.fr/gp/product/B07N... The ratchet wrench set with bits TO DISASSEMBLE EVERYTHING: https://www.amazon.fr/gp/product/B07B... the vice you need (I've lost count of how many times I use it: essential!): https://www.amazon.fr/gp/product/B01M... and to adjust its variation to perfection, a box of DOPPLER rollers: https://www.amazon.fr/gp/product/B07G... ⚙ Small config. 50CC that works WELL: Good parts to optimize your scooter, easily: 50cc POLINI cast iron kit: https://www.scootfast.net/kit-cylindr... YASUNI R exhaust: https://www.scootfast.net/yasuni-exha... 17.5 PHBN carburetor: https://www.scootfast.net/carburateur... POLINI Hi-speed variator: https://www.scootfast.net/polini-vari... DOPPLER air box (no more noise, performance gain ;!): https://www.scootfast.net/boite-a-air... With that, it will already be not bad! Config' in KIT 70: MOST 70CC Kit: https://www.scootfast.net/kit-cylindr... 19mm dellorto carburetor: https://www.scootfast.net/carburateur... 00:00 Introduction and video plan 01:50 1 - Unboxing and presentation of the tested CDI 04:20 2 - Assembly of the CDI, and start-up... what? it doesn't start? 07:19 We fix the scooter! it doesn't work PAAAAASSSS! 09:55 We get angry: Opening the CDI with the grinder... gently. 11:53 THE REASON: we explain, we conclude on the improvement brought by the racing CDI!