I'm curous about the 'detune' for winter, also.
If I did anything like that, it'd proably be just to swap the K&N for a paper element - then clean and re-oil the K&N in the Spring.
Well, I don't know about the 'bad rap' that the ProCal is getting.
It's a nice tune and a lot of us like it - I haven't heard of anyone that has damaged their engine with it.
Does the 'ping' I get bother me? Yes. Does it bother me enough to not run it? No.
If I could get the drivability in throttle response and JUST the low-end torque gains (no other performance difference past 3000 rpm) - and above 3000 rpm it was just like stock, I'd take that in a minute!
But I don't want to HAVE to stay between 3000-6500 rpm all the time - even if the motor likes it! And it does.
Sometimes I just like to tool around between 1500-2300 rpm, for the better part of a day in part throttle. Stock, there's nothing there, under 3000 rpm.
Maybe someday I'd consider another tune, but that would involve me still driving the crap out of it above 3000 rpm - for considerable gains, sure. But above that, stock is fine to me. I just don't want to HAVE to stay there. Make sense?
And, you're right. Stock, it's a different experience - work - because it changes all the time (performance) while you drive. With the tune, it's effortless - consistent - always the same outcome with throttle, clutch and gear 'throws.' Not all 'over the map' like stock.
For me? The tune stays. Ping n all!