what's your airbox mod?

[F17BAD]

Iv ALWAYS said drilling holes in the standard box was daft....

Tweed, all that work man, just mount a cone outside behind bumper, works a charm, i know i have a big intercooler but its alwats best having cold air going into a Turbo rather than already warm air.. bit less work for intercooler to do 

[VW BUSH]

having a 1.4 i might aswell start blowing air in the intake myself but decided to get a cold intake pipe and smooth then drill my box it makes it sound louder but performance is none.

it all comes down to noise or performance.

So you put in a cold air feed and drilled the box, meh?

[whileoceanasleeps]

Iv ALWAYS said drilling holes in the standard box was daft....

Tweed, all that work man, just mount a cone outside behind bumper, works a charm, i know i have a big intercooler but its alwats best having cold air going into a Turbo rather than already warm air.. bit less work for intercooler to do 

could you put up a pic or two of this? i'm quite interested..

[tweed]

Iv ALWAYS said drilling holes in the standard box was daft....

Tweed, all that work man, just mount a cone outside behind bumper, works a charm, i know i have a big intercooler but its alwats best having cold air going into a Turbo rather than already warm air.. bit less work for intercooler to do 

We don't have turbos and inter coolers. Just mounting a cone filter behind the bumper is pointless for N/A engines. Or have I missed something?

Having two 100mm holes forcing air into a sealed air box at 70mph is much better. The faster you go the more air being forced in that box. It has no where to go other than in the inlet. (Forced induction) that's why you fit a turbo right? You get your forced induction from the turbo, I get my forced induction from cold air feeds at speed.

You won't get that from just sticking a cone behind the filter.

[F17BAD]

We don't have turbos and inter coolers. Just mounting a cone filter behind the bumper is pointless for N/A engines. Or have I missed something?

Having two 100mm holes forcing air into a sealed air box at 70mph is much better. The faster you go the more air being forced in that box. It has no where to go other than in the inlet. (Forced induction) that's why you fit a turbo right? You get your forced induction from the turbo, I get my forced induction from cold air feeds at speed.

You won't get that from just sticking a cone behind the filter.

what tests are these based on  ?? 

yeah you have missed something, basically id would think you will be able to get much more air to a Cone behine the lower bumper, a cone is a bigger area than the standard box filter and also much easier to get more cold air feeds to - at low speeds too.. you would have to drive at 100mph to see any real benefit with it the way you describe..

will also look alot better than lamps missing and stupid square lamps in grill, however thats just my opinion

You way seems a lot of more for about a 1 BHP (if you are very lucky) gain...

[tweed]

We don't have turbos and inter coolers. Just mounting a cone filter behind the bumper is pointless for N/A engines. Or have I missed something?

Having two 100mm holes forcing air into a sealed air box at 70mph is much better. The faster you go the more air being forced in that box. It has no where to go other than in the inlet. (Forced induction) that's why you fit a turbo right? You get your forced induction from the turbo, I get my forced induction from cold air feeds at speed.

You won't get that from just sticking a cone behind the filter.

what tests are these based on  ?? 

yeah you have missed something, basically id would think you will be able to get much more air to a Cone behine the lower bumper, a cone is a bigger area than the standard box filter and also much easier to get more cold air feeds to - at low speeds too.. you would have to drive at 100mph to see any real benefit with it the way you describe..

will also look alot better than lamps missing and stupid square lamps in grill, however thats just my opinion

You way seems a lot of more for about a 1 BHP (if you are very lucky) gain...

Got my info from the rr test day trying cone filters and modified air box.
Also I have a 10mph gain down a 1.1 mile straight from a drilled box to a sealed box with 80mm cold air feed.

You have missed something! No matter how much cold air feeds you run to a cone filter it will be wasted as there is nothing to contain the unused air. Air will be escaping in all direction.

With a sealed unit you capture every last bit of air that you can get.
You will have twice as much air at 100mph with two 100mm feeds to a sealed unit than a open cone filter.

Christ the standard box has a 50mm opening that goes to the wing. And that copes just fine at low speed. So why would you have to go 100mph to see any gain from my air box?

What gain do you get from a cone filter? From all the research I've done I haven't seen any on a N/A motor.


I truly am surprised at you to think a cone filter behind the bumper is a good idea.


Just to add even though if you read properly I wouldn't have to, I have a grill that uses round hella lamps. Not the square fog grill your on about.

[tweed]

And I also called it ugly as hell. I agree with you on that.

[Khare]

The only problem of having the cone mounted so low is water intake. With the number of streams that cross the road I've had to cross in the last week I would have had to call the AA a few times. I can see the benefit in a turbo car, as the bay is a hell of a lot hotter than on an NA car, but once the air is in the engine and out of the exhaust it's going to come out piping hot anyway, so it's not really worth risking a few degrees cooler if it means there's a chance of sucking in water.

I'm sure tweed hasn't had his airbox on a CFD program but if I blow into my cold air intake (fog lamp housing) and put my hand over the other side that feeds the box, I can feel the air going through, and that's out of my lungs, I can image a hell of a lot of air going in when travelling at speed.

[tweed]

In the rr air box thread the open filter has a massive fan blowing on it and with a open bonnet so no hot air is around the filter.

It then gives better torque than a standard box, but the torque is matched by a modified top half air box. I can't see the cone filter getting any more gains than that on the road.

Why even waste money on a cone filter? When you get same results as a modified top half air box.

I'm then adding two 100mm cold feeds to that box. You telling me I won't see any gains?

I think someone has had a heavy Xmas and is not thinking things through.

[F17BAD]

i think i remember tht grill yeah (dont do it tho  )

Anyhow - Space in the airbox to capture air.. haha.. serious ?
(cone filters need not do this. should see the size of mine its farkin HUGE 

the hole in the wing for standard box is not very good at all IMO, if i was to keep a standard box id junk that for a better location of feed, i found brake dust in my box along with leaves and sh!t


Lastly have you ever had a issue with heat soak ?  i haven't ever...  wouldnt get too hung up on all this filter bollox.. more stuff to worry about. especially if its on the 8v (not a joka against the engine as i dont mind it, just this whole heat soak thing is a bit over hyped)

Khare the filters is monted at a height so that water is not a issue, iv had mine on over a year with a big ass direct feed to my bumber grill, i use the car every day, rain or snow and never no issues. i dont think Tweed ever uses his as his mileage never goes up