2019 RMZ 250 mapping couplers

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7/6/2020 7:42 AM

Could someone put in plain english the benefits of the white, gray, and black plugs for the rmz250? I know white is the leanest. Is black the richest and gray stock?

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7/6/2020 7:49 AM
Edited Date/Time: 7/6/2020 7:50 AM

Different maps to suit your riding and riding conditions

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7/6/2020 7:57 AM

Factor E wrote:

Different maps to suit your riding and riding conditions

I guess I am looking more for what each coupler does in terms of the ecu, ignition, and fuel delivery.

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7/6/2020 9:16 PM

White is -4% leaner, white with black tape is stock, gray is +4% richer. No ignition timing changes. Personally, I think the gray gives a bit more overrev, and the white one is better down low.

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