Hey guys, just recently installed my new k&n air filter panel and it seems to be a tad to big. It sticks out a little on one side and I cant completly screw the screws down all the way. I tightened the screws as much as possible and just left it. Thought maybe it's a little bigger to cater similar airbox sizes. Once installed I went for a drive and found that the instant fuel economy seemed a tad worse then usualy and that when coming to a stop it would drop down to say 8, 6, 4, 3 L /100km then jump up to 10, 12 then back down to around 2. Not sure if it even affects the fuel economy, I may be just paranoid.. Also I know jack sh*t about cars Any help would be great, thanks!