Not sure if its just me or actually a problem. As soon as i get to 5krpm the car feels like its run out of puff and slows down, up to that point its quick and builds boost fast. I have a glanza with: >CT9 turbo running 0.7bar HKS adjustable actuator >Standard mani >decat >jpreformance 2.5 stainless catback system >ARC topmount >Dumpvalve blanking plate Should also mention after fitting the decat there was a slight leak from the lambda. The problem seems to have started since fitting the decat.