mozpdragon Posted December 17, 2023 Share Posted December 17, 2023 HI just wondering if I could fit a later ecu unit into a 1991 xj600 pre diversion to resolve the starting issue Quote Link to comment Share on other sites More sharing options...
Moderator drewpy Posted December 18, 2023 Moderator Share Posted December 18, 2023 i swapped my fz600 engine for a 91 version and had to use the correct ecu. it wouldn't start and there should was a very long (over 6month) fault finding escapade. It was down to 1 wire wittch tested ok, but failed when electricity was used. check your ecu number and google that, I may have one in my shed somewhere as I did the same thing. Wasn't until i bypassed the loom was the error found Quote Link to comment Share on other sites More sharing options...
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