My air filter situation...
Posted: Wed Jun 15, 2005 12:51 pm
Ok chaps, I need some help please. I need a new air filter for my car...(Mk4 1996 VW Polo)
Its only a 1.4, 8 valve so I know I'm not going to see any vast performance difference.
1. I'm not bothered about induction noise
2. I don't want the air filter to be purely cosmetic
I'm a bit of a newbie with regards to such matters. I've looked on this website >>> http://www.motor-world.co.uk/kroozin/ca ... _cat_id=21 I'm intending to get the hosing and piping etc from here, not sure about the actual filter itself though.
Some of the filters seem to be 'induction' ones and have a hole a their top...so I'm assuming I can't stick these ones directly onto my throttle body?!
Here are two diagrams I've been working on for different ideas what to do. Apologies for them, I had to do them in PowerPoint!

I'm told that putting the air filter directly on the throttle body can be done, but I'll get loads of induction noise. Plus this isn't the best as its likely to be quite warm at the top of the engine bay regardless of cool air coming through the two cold air feeds. However this is probably the cheapest and most simple solution...however would I get any performance gain?

In this example I've decided to place the cone filter away from the throttle body and resting down near the original air in take for the standard air polo (which comes from inside the wing). This would be quite compliacted to match up all the correct diameters of the stainless steel tubing, hosing and air feeds...and would also be more expensive.
What are the advantages/disadvantages of sticking the filter directly on or away from the throttle body!?
Am I going to see any performance gain at all? Currently I have a dodgy-fitted massive sponge-like Pipercross thing stuck directly to the throttle body.
Everyone I seem to ask - even people in the trade - seem to have different opinons on what to do and the performance gain I'll get.
Its only a 1.4, 8 valve so I know I'm not going to see any vast performance difference.
1. I'm not bothered about induction noise
2. I don't want the air filter to be purely cosmetic
I'm a bit of a newbie with regards to such matters. I've looked on this website >>> http://www.motor-world.co.uk/kroozin/ca ... _cat_id=21 I'm intending to get the hosing and piping etc from here, not sure about the actual filter itself though.
Some of the filters seem to be 'induction' ones and have a hole a their top...so I'm assuming I can't stick these ones directly onto my throttle body?!
Here are two diagrams I've been working on for different ideas what to do. Apologies for them, I had to do them in PowerPoint!

I'm told that putting the air filter directly on the throttle body can be done, but I'll get loads of induction noise. Plus this isn't the best as its likely to be quite warm at the top of the engine bay regardless of cool air coming through the two cold air feeds. However this is probably the cheapest and most simple solution...however would I get any performance gain?

In this example I've decided to place the cone filter away from the throttle body and resting down near the original air in take for the standard air polo (which comes from inside the wing). This would be quite compliacted to match up all the correct diameters of the stainless steel tubing, hosing and air feeds...and would also be more expensive.
What are the advantages/disadvantages of sticking the filter directly on or away from the throttle body!?
Am I going to see any performance gain at all? Currently I have a dodgy-fitted massive sponge-like Pipercross thing stuck directly to the throttle body.
Everyone I seem to ask - even people in the trade - seem to have different opinons on what to do and the performance gain I'll get.
