That's pretty good compression. No worries there. At times cars will blow white smoke depending on weather. Condensation can build up in the exhaust. Does it do it once the car is warmed up or just on start up. Not being from Boston I haven't looked at the temps there lately to see if humidity has been higher than normal. Is your CCV making a sound like this and are you using above average oil consumption?consumption.
https://www.youtube.com/watch?v=DIMpIAkWeNI