All the 250cc class (223cc actual) Chinese efi street bikes suffer with this issue. It is caused by poor programing of the ECU. I have an ECU flash service that I money back guarantee will not only solve your stalling issue but will also add more power and overall performance to the bike. Check out my post in our China EFI Facebook group for details and poke around a bit in the group for member testimonials and reviews. You won't be disappointed
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