All of the above were received back within a week from sending in my ECU, All parts required for the engine mods were included and installation was straightforward following the install videos.My bike is a 2022 Gas Gas 250EX, purchased used, with 40 hours on the meter. Owned since April 2025, and has fouled plugs continuously with overly rich fueling from the stock ECU on cold start-ups. Several friends and family have used the TSP/South Bay Kits with great results, no question on following their direction.After installation, did several cold starts with very moderate rides around the neighborhood. Finally got to due a real ride last weekend. Easy starting, NO plug fouling, greatly improved power delivery throughout entire RPM range with great throttle control and response. Finally, the bike works like what it should have from the factory! I am a very, happy camper.Thank you very much South Bay Moto,,,,,,Darryl Reid
