Roger 04 RT
Husqvarna
AA Class
......so I disconnected the wuka to take the bike to get mossed and derestricted (which didn't happen). Didn't get to ride it until this morning, because of torrential rain. Well, from running a lot better last week with the new brisk plugs and wuka connected, today the bike ran worse than ever before.
I could only just keep it from stalling, even when I was ready for the stumble. Anyone who wasn't ready or new of the problem would have stalled every time they dropped the clutch. Life and death sh!t! It wasn't even that bad when I bought it.
I didn't run the bike for 3 minutes, or perform an ecu reset, so I wonder if the bike had adapted the wuka temp and now is overcompensating for the real ambient temp, making it run even leaner?
As you guessed, when you removed the Wuka, the mixture instantly became 6% leaner than normal (14.7:1) and you felt the effects of running with a VERY lean mixture of 15.6:1. It will take a tank of fuel or so to adapt back to stock, which is where it was after adapting out the Wuka.
One of the reasons that riders believe that temperature spoofing works is that:
A) They install it and the bike feels better, (temporarily a little richer than stock)
B) Then ride with it for a while and wonder if the effect is really there (adapted back to stock)
C) Then remove it and feel lean stumbles while the bike is temporarily leaner than stock.