I have a 19 kx450 and I bought an ECm with a tokyo map on it . Do I have to run a specific coupler or does it not matter ? I usually run black coupler anyway. Thanks
When they map it they will tell you what coupler to use, unless you specify which one you want it on. When I had mine done by them I had a MX map on the green coupler and a woods map on the black.
Youd have to ask who you bought the ecu off of and ask them. They can put different maps on each coupler. Black might be a super aggressive map made for a hopped up engine for all you know..
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