2009 klx250s efi UK model.
Bike used green laning and enduro training/practice.

Will be fitting EJK shortly. Am I right in thinking there are no smog pipes etc to remove?
Is there anything else to do whilst I have the tank off?
Also what is the twin air filter and is it a good idea? I ride alot of tarmac getting to and fro the 'lanes'.

Thanks