It's been a while since I've posted. My 79 P200e has been running like a champ. I have the SIP Road 2 on there and upped the main jet to a 118. Otherwise the bike is stock, stock, stock. Del 24/24 with mixer - stock jets except main for SIP road 2.
The weather has changed here - cooler, more humid and I was thinking the carb could use a slight adjust so I popped the cowl off, opened the carb box - checked the filter etc. I wanted to make sure there weren't any unexpected leaks etc. Everything checks out.
I fire the bike up - with carb box open and cowl off and go zipping down the street and feel like I'm flying. Bike sounds great, super smooth through all the gears and just responsive as hell - super stoked.
As I button it all up I have a smile on my face and think about how great my Vespa is and then go for another quick ride. Now, however, it's not quite the same - not as smooth etc. Not 4 stroking, backfiring or anything - just not as amazing as when all that air was getting in there.
I've spent the last hour searching "carb tune" trying to find mention of this situation but came up empty.
Can anyone confirm what I'm experiencing and make a recommendation? I know there are mods to carb air intakes and all sorts of things - but I'm leery of changing stuff on my mostly stock bike.
Of course I could lean stuff out a bit more but I'm not sure that's the same effect. I feel like I'm super close to the right tune on the carb- and it's very adequate the way it is - but I'm a touch OCD.
Thanks in advance and happy new year all!