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@ricbartm yes i respected the waiting times. I haven`t sent them an email yet, as they never replied on one of my previous mails regarding error 504.

can be also up to my riding-style. Chip is always active and i go fast!

i can`t confirm that the speedbox 3 works faultless with the CX 2020....maybe you are only lucky yet... after my bad experience with speedbox 2 and the error 504 my dealer mounted the new v3 chip. Now after another 250 km error-free period my engine went again into limp-mode/error 504. The lock...

i assume this will take some more research now from speedbox, instead of adding only a new sticker ... i was naive enough to belive in there quick fix for gen4 :-(

Hi Marc, don`t belive in the statements from Speedbox, looks like is only advertising.... my Dealer installed on my new Gen4 CX Bike the Speedbox 2 with support for 2020 Engine, now after 350 km the Engine locked into Limp-Mode and the error 504 occur. After talking to Bosch they told him also...