Hi, I'm pretty new on here but I just discovered something about my air inake you may or maynot know about. Mine has a full service history and the air cleaner was changed fairly recently. I was having a look around trying to spot a coolant leak - see my other thread please if you are able to help, and ended up taking out the ducting leading from the grill to the air box. When I was reassembling I noticed a thin gauze mesh halfway down one of the pieces of duct which was clogged absolutely solid with fine dust, looked like years worth. At service the mechanic has either not known about this or hasn't bothered cleaning it out. I did clean it and am amazed in the difference in acceleration, it was mapped a few months back which made a big difference but cleaning this mesh feels like it's been mapped again, on a par with a mapped/sportcat subaru gb270 Wagon I used to own. Apologies if I'm preaching to the converted but It could be easily overlooked and effectively blocks the air intake, worth a check imo.