03 yz ex cam in a 02 wr450 gray wire test

I did a search but did see a thread that was this specific. I have a 03 yz450 ex cam in my 02 wr450 and was testing to see how it runs with the gray wire connected and disconnected.

With it disconnected it seems to hit harder in the midrange, I get a slight hesitation when I blip the throttle, and I get some small pops through the exhaust on deceleration but with it connected the hesitation is gone and no pops.

Has anyone else tried this test with the same setup???

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