[Riley]

We went for a ride last week and it was chilly. Thermometer said 42*.

Bike was running awesome, though a touch harder to start as to be expected, and took a little to warm up. Just a mile or two.

Felt like the bike had lots more oomph and response, but still had a touch of decel pop. Only when letting off after running wide/almost wide open. Just a single pop, no continuing.

So, I'm a little confused as to why. It seems, and I've thought this, that it's a little rich in the summer however I want to make sure that for 40* or so I'm not too lean.

Running around 6-7000'.

[Aussiecrf230]

Riley,

I would expect a lot more oomph in the cold as your motor draws in a denser charge.
More fuel/air mixture , more go.

Going up an idle jet size would improve the starting and warm up time. You would probably have to change back come summer though.

[redrooster65]

You may want to open the fuel screw a bit when riding in the colder season. Also a little decel pop is not a bad thing.