I could post up some pictures of the evap system on my car later today, since I will be installing a boost gauge. we'll see what you guys can figure. My abarth is a 2015 and I've been curious about the boost leak issue of previous years. Whether or not fiat fixed this issue I don't know. In the mean time I have a parts guy I deal with all the time at my local dealer, he may be able to find out if there was any TSB or revision to fix this issue.