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| Performance Modifications & Enhancements Engine, Fuelling & Throttle performance mods | 
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            New ECU - error 54? 
            
             Hi Guys,
             Apologies if this has been discussed, I did do a check...... I recently brought a new ECU off ebay for my '04 model to help with the surging. It's the ECU 5VK-8591A-00 with the white dot. When fitted the bike won't start and displays error 54. The old ECU works OK. Is it duff or do I need to reset something first? Thanks in advance. | 
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