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Well, you can't just install 550 cc injectors. First of all, the JR FMU has to come out entirely, you cannot try to 'close it all the way'. ALL of the JR stuff needs to come out, including the fuel pump. You should run on the stock pump. You need some sort of programmable management, such as Hondata, AEM EMS, EFI PMS, or Greddy E-manage. A VAFC will not be able to control 550 cc injectors.
Sounds like it's time for a new shop.
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