Just repaired my swirl bar with the repair set from swirlrepair.com (good kit), and while i was busy under the bonnet i decided to clean my boost sensor. As my catchcan is close to my boost sensor, i checked it's level and saw it was half full , i thought this had to be a mistake, I removed the can and emptied it:

Sorry crappy phone pics

Over 200ml of crap in it

Only has been on for 8 months.

Happy it works