For Harley-Davidson motorcycles every O2 sensor equipped Harley has an option of two different EJK controllers based on user installation preference. The user can select to just use O2 bypass modules to plug into the factory O2 connections or they can choose an O2 plug-n-play controller where the unit plugs into the O2 connectors much like the injectors. Functionality for the controllers is the same! Users choose the bypass modules for easy installation as a result of less harness to route along the frame. Users choose the plug-in harness for a cleaner look where nothing is left unhooked and zip tied up out of the way. With Bypass: http://www.gegshop.nl/img/ejk/EJKBypass.jpg, No Bypass: http://www.gegshop.nl/img/ejk/EJKnoBypass.jpg
The EJK Electronic Jet Kit module comes with a 2-Year Warranty for manufacturing errors. This does not cover errors or damage due to incorrect use or incorrect installation. The controllers come with a two (2) year warranty from date of purchase against original defects in materials and workmanship. Should the controller fail to perform then the manufacturer will repair or replace the unit to the original retail purchaser at no charge except for shipping charges back to the manufacturer. Proof of purchase is required.
No, absolutely not. Manufacturers have tried to declare the warranty void based on installation of third-party products, but have been turned down. Installation of an EJK module will not void the warranty on your vehicle.
Yes, you do. Just put your Yamaha MT03's CO back to 0 (zero), the EJK will fix this problem along with adjusting the rest of the fueling. This goes for your MT-03 as well as other Yamaha motorcycles.