K&N Cold air intack filter

[overlanderr400]

Hi guys I am thinking about fitting a cold intake filter from K & N to my D40 07 can it be done DIY or is it a specialist job . And I cleaned my mass airflow sensor out last weekend what a difference highly recommended it was the sensor that got me wondering to upgrade my air box to a K&N I have a standard K&N in my airbox at the moment so guys what do you think to this upgrade? thanks guys all the best

 

[Rabbid-chop]

Do you mean one of these?

That would be a step backwards from what you already have.