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[Albatross]

In the top of my air-box is a trumpet shaped tube that affects (restricts?) the air-flow out of the air-box to the elbow before the MAF sensor.

It is very easily removed by disconnecting the hose from the outlet on the air-box and sliding the "trumpet" outward.

It has 3 small air holes (roughly 7mm) on the top and another 3 on the bottom, these are in addition to the trumpet ended large hole at the end.

Anybody know what this is for? I have just removed it and driven the car as an experiment. The car feels a bit more responsive so I can't see the point of it personally.

[markey mark]

its to quiten the induction noise  

[vauxfan2k]

its to quiten the induction noise  

rip it out already, you know you want to  

[markey mark]

its to quiten the induction noise  

rip it out already, you know you want to  

mines long gone and a k&n panel in there   8-)

[vauxfan2k]

bwaaaaaaap bwaaaaaaaaap addictive the noise is telling you I am.

do it now  

[Albatross]

OK so it adds noise, whoopee. TBH I'd rather have a quiet, subtle, but quicker car over noisier and not any faster car. It's an Omega not a Corsa.

Does it actually enhance the performance at all by not having it there?

[vauxfan2k]

no it makes no odds, other than to add "noise" and that "look at me blasting past you on the outside lane" noise.

Just makes it sound throatier for want of a better word. if you dont like it put it back on, no harm done.  

[ngrainqey]

In the top of my air-box is a trumpet shaped tube that affects (restricts?) the air-flow out of the air-box to the elbow before the MAF sensor.

It is very easily removed by disconnecting the hose from the outlet on the air-box and sliding the "trumpet" outward.

It has 3 small air holes (roughly 7mm) on the top and another 3 on the bottom, these are in addition to the trumpet ended large hole at the end.

Anybody know what this is for? I have just removed it and driven the car as an experiment. The car feels a bit more responsive so I can't see the point of it personally.

i cant say as i'v ever seen a trumpet shaped pipe in the top of the airbox *shrugs*

have a pipecross in my 2.0 airbox but debating wetheror not to swap it to the 2.5 (oil in maf sensor syndrome from oiled filters)

[Albatross]

I can't honestly say that I noticed any difference in noise since I took it out though. I think I'll put it back in.

[ngrainqey]

im glad i dont have that piece of pi$$ in my airbox! ...i didnt think i'd seen one before in my airbox

[vauxfan2k]

you wont until you put a k&n panel filter in.

[Albatross]

im glad i dont have that piece of pi$$ in my airbox! ...i didnt think i'd seen one before in my airbox

Maybe it is only needed when you get a proper engine.

[Albatross]

you wont until you put a k&n panel filter in.

That'll just damage the MAF sensor in the long run won't it? And not give anything much back in return.

[Pete Elite]

its to quiten the induction noise  

rip it out already, you know you want to  

mines long gone and a k&n panel in there   8-)

          So there's no adverse effects if removed Mark :question.

[vauxfan2k]

no, its only the oiled cone filters that damage the maf sensor, panel filter is less restrictive so the car isnt having to suck the air in as hard.