2020 SL AWD - No Power on Acceleration

[olds]

57,000 miles.
Went thru automatic car wash, which included underbody spray, today and headed to hardware store. It was about 40F outside up from the teens it's been in. 2 blocks from the car wash, I left a stop sign and had almost no acceleration. Coasted into hardware store and shut off car thinking it would "reset" while it was off. Got back in and same thing. Push the accelerator and extremely slow acceleration, like a weak limp mode. If I hit accelerator in neutral or park, the engine spins right up. No codes or warning lights. No odd noises or smells.

After a night in my heated garage, it runs fine. Is there an electrical connection that probably got wet? We use the underbody spray all the time (salt) and this has never happened before.

[VStar650CL]

Check your airbox for leaks, either in the box or the filter not sealing completely. It sounds very much like the MAF got wet.

[olds]

Check your airbox for leaks, either in the box or the filter not sealing completely. It sounds very much like the MAF got wet.

Thanks. This would only manifest under load?

[VStar650CL]

No, it would basically prevent it from taking any load in the first place. Idle might be crappy too, but it would definitely stop it from taking much pedal. When the ECM doesn't see air, it won't add fuel.

[olds]

No, it would basically prevent it from taking any load in the first place. Idle might be crappy too, but it would definitely stop it from taking much pedal. When the ECM doesn't see air, it won't add fuel.

Ya, in park or neutral, the engine ran fine.