K&N Filter and Standard Air Box

[david51]

Ive heard about ways of using the standard air box and de restricing and cutting holes in it and using a K&N replacement filter would give more bhp along with better mpg than using a cone filter or an induction kit? If this is right how do you do it and does anyone have any pics of it all done? Thanks

[Octane2097]

i saw a guide on exacly the best way to do this, but i cnt remeber where!

make sure u do the drilling on the side BEFORE the filter otherwise well its pointless actualy having the filter

[bigboy219]

i have a 1.4 8v 5 door corsa and i have a k&n panel filter in it and it does 300+ miles 2 a full tank and it keeps up with 1.6 sport corsas up 2 120mph!!! so yea it does improve the bhp and mpg