My mechanical knowledge is somewhat limited but i had a bash at fitting a K&N which went surprisingly smoothly untill i started the car up. When i started it up and sat there for a few minutes, it was idling at 2200. Im guessing this may be something to do with the breather pipes as these are still not connected?! Would they make a difference to the idle speed? Would i need to buy breather filters for both of the pipes? Car is a Willy1 btw, any help greatfully received!
Cheers!