D40 Custom Air Box/ Filter

[MickDooit]

Has anyone done a filter box mod/ custom jobby to release engine bay room perhaps allowing one to put another battery under the hood?

If so, photos, details would be appreciated.

Also any feed back on K&N filters? I've not heard anything positive about them (nothing specifically negative either) when it comes to dusty environments like we're prone to finding in the great Australian Outback.

Cheers Mick.

 

[ONLOCK]

iv got a uni filter in mine, think its great, dirt and dust dont seem to find there way past it, and i just clean it when it gets dirty, simple. and i dont have to keep paying for disposable ones when allot of my driving is offroad in dirty situations

 

[MickDooit]

Thanks for your input.
Have you noticed any build up of oil (from the filter) on the AFM behind the filter?
After a long series of problems with the sensor previously I'm paranoid about it screwing up again.

Did you notice a difference in performance?

 

[RustyNav09]

I have a kn filter in my d22 and its great. Aslong as they are cleaned and oiled properly they do really good. I would personally recommend using a paper filter I'm dusty conditions and kn on road use and light off-road stuff. Like if ur going put for a day trip the kn is fine. Long trips would stick a paper in and use kn as backup.

 

[jjohn]

i have recently fitted k&n air filter to my D40 auto 2008. 15lt/100 before, with a dirty paper job and 11.5/100 after and i squirt around a bit. had em before and luv how easy they are to clean too

 

[MickDooit]

Thanks guys, I think I'm going to stick with a paper, I'd love to improve my airflow a bit more but I think I'll just try and get a bigger one into a custom box first then go from there.