Yeh that seal is perfect round the MAF, tight seal and sat on well, this is the kit that was on the car when I got it.. Car was running perfect on it for a good 5 weeks and say 300 plus miles.. There no leaks between the cones and the MAF however I've just read I need to seal the empty air boxes with sealer? Is this because there's no air filter in it, would that alone cause it to run that badly.. If so I'm off to b&q 🤣🤣

Cover not on I know but photo just to show induction kit