lunchboxbill

Right guys,

I'm going to clean my K&N filter this weekend, and whilst I'm at it, I'm going to drill some holes into the air box cover.

I've read a lot of the posts on here on the pros and cons of doing it.

The one reason I am doing it is for noise and noise alone.

The question I have is, what's the best location to drill?

I have seen round holes, square holes and all in different positions. I have read drilling to the right gives better noise etc etc etc.

I have one shot at this and want to get it right!

Cheers,

Kieran.

Jim Howley

I drilled holes through just about all of the squares on the front of the cover. Other people cut all around the outside to completely open it up. If you want to drill it rather than cut why not drill a few holes and test it. You can always drill more holes, you can't repair them once done.

SKM

I've read that it is recommended to drill the holes towards the front of the cover to avoid water from the rain and washing from dripping into the exposed air filter. I

Uber 911

Kieran, if **** it up I have a spare box.

chris

zicoramone

If you want noise I would go for the open box...and you don't trash the original 964 cover (you may need it the day you decide to sell the car).

hawk911

I cut mine so it was like the cup style $300 version. The extra sound is very nice.

lunchboxbill

Zico - what do you mean by open box?

Jim Howley

Take a look down the page you can find a Cup or Open Box. http://www.fabspeed.com/964C2_C4_RS.html

zicoramone

I meant something like this one Bill:

http://www.fabspeed.com/964_4.html

lunchboxbill

*UPDATE*

Took the air box off yesterday and did the duct tape test - LOVED IT!!!!!!!!

The only problem was that I have found at the at my last service the garage replaced my K&N with a paper filter

So I have delayed the actual cutting until I get that resolved. Legally, any idea where I stand if I demand they replace it? Seeing as I have spent about £1400 with them in the last 6 months you would like to think they will sort me out.

Also... I noticed 2 of the 3 clippy things that hold the air box in place are missing - anybody a part number so I can replace them?

Thanks all.

K

kalujo

Whats the duct tape test????

Jim Howley

Remove the airbox cover and hold the filter in place with duct tape around the edges. Then go for a drive. That way you can hear the difference opening the airbox will make without having to destroy your airbox cover.

dfinnegan

106-00 #10 ( 2) 964.110.902.00 clamp (short)
106-00 #11 ( 2) 964.110.902.01 clamp (long)

crg53

As dfinnegan part # states, there are 4 clips holding the cover in place.

lunchboxbill

Any UK based people know of any decent websites where I can find these part via the part number?

I found one but it was US based and they wanted £9 for the parts and then another $80 to ship!!!

Cheers