Thread: modified/upgrade/performance air filter box

Originally Posted by el_jefe

Good morning one and all,

I am wondering what people have done to get their D2s breathing better, I have been looking for some form of replacement air filter box but there doesnt seem to be much around for the d2s.

I have see a couple of air boxs but none are for the D2
I admit this one is for a patrol anyone got anything similar
patrol_airbox_600x.jpg

I am making a custom air box for D2 and running one now in my D2 with a 4inch snorkel

I think Allisport make one, but from memory is basically an aluminium version of the stock one... Which would still be a vast improvement.

One of the issues often quoted with the stock setup is that it is too restrictive when running performance tunes, but in reality there are a lot of discovery 3 tdv6 engines toning around 150-170 kw with very few breathing issues, but very similar airbox size. I'd say that some of the supposed restriction is actually the rest of the intake system, and the cheapest/ easiest mod that can be done to ease these issues (albeit marginally) is the airbox upgrade.

However an aluminium one would be stronger and hopefully less prone to flexing and letting air in, another issue is the filter blocking and getting ruptured or sort of inverted, I guess some kind of support in the lid would help alleviate this.

Cheers
James

Yeah I reckon its super restrictive and have been looking over pics of air box's to try spot one that looks close that I can modify.

I also picked up some silicon hose bits from autobarn today and will fit them up on the weekend and run a pod filter directly off the turbo seen as my tune does not use the MAF, will see if I can notice any thing.:P

I think the big problem with them is:

The filters leak around the seal
The flow is restrictive from the airbox through the inner guard.

I really like Kaaaiju's solution to that area which will flow significantly better.

This is what I run now, custom airbox 4inch snorkle to 3inch striaght into the airbox

Confirmed, factory airbox with good sealing safari snorkel is way too restrictive goes even better now like this ha.

Originally Posted by Four Loko

Confirmed, factory airbox with good sealing safari snorkel is way too restrictive goes even better now like this ha.

Just don't take it on a dusty road.

Originally Posted by Four Loko

Confirmed, factory airbox with good sealing safari snorkel is way too restrictive goes even better now like this ha.

No wading for you.

I can't help but think that this pursuit of power is a bit silly, (Says the guy with a mild tune, about 125kW. What is should have been from the get go) My Disco goes most places. When I get stuck, it is not due to a lack of power, a lack of skill, maybe, a lack of mods, maybe. Although with a winch I can get up anything.