£29 induction kit solution!

JJ.Foulds

JJ.Foulds

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So here it is! £13 for filter £16 for the pipe.

and the filter can be used later on for the end of the mtc copy of the itg induction kit when i have the money to do it properly.




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no idea about performance, probably wont increase much, may even be worse?! who knows. However it is a bit louder and can hear it better later on in the rev range. Saving up for the proper intake in the mean time!

JJ.
 
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Have you removed the standard air filter? else you'll be filtering air twice....ie it'll be more restrictive.
 
Look ok for the money but black filter would look better tbh
 
It is not a looker for sure :ninja: but 29 quid is a good price
 
Yerh and the air will still have to pass through the standard restrictive air box
 
jonny1985 said:
Yerh and the air will still have to pass through the standard restrictive air box
Click to expand...

Well its just a square space in the old filter bay now, so that would help right? lol.

and yes probly not the best looker!

JJ.
 
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it sounds louder, i can hear the air dump noise much better which is a nice change.
and while moving it deffo feels tighter on the throttle, more instant than it did before.

JJ.
 
Are you sure that when you remove the OEM air filter that you haven't got air gaps where the rubber seal for the air filter used to be? If so you'll be sucking in dirt and pitting the impellers on the turbo.
 
No. Its right at the back behind the engine. All the kits pope it round the back then to the front
 
warren_S3 said:
Are you sure that when you remove the OEM air filter that you haven't got air gaps where the rubber seal for the air filter used to be? If so you'll be sucking in dirt and pitting the impellers on the turbo.
Click to expand...

This is what I was going to say, mine had a few gaps on the standard airbox where the filter helped seal...
 
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I was going to suggest cutting the paper element out of the seal and leaving the rubber seal in the airbox aperture.

I guess only time will tell if he thinks it's ok. As the turbo spins up to 100,000rpm even the slightest dust particle can accelerate and pit the turbo impellers, I hope for your case this is not so, but I'd get it checked just in case.
 
Yeh there were 2 tiny holes but i just left them ahaha while i was testing it. But easy to cover them, but never bothered lmao caus got the kit on the way
 
A turbo sucks air like you wouldn't believe from ANYWHERE! Forced induction means literally that. I would tape those holes up immediately as otherwise your money saving intake will land you a sizeable bill. If you don't believe me call a tuning company and ask their view.
 
warren_S3 said:
A turbo sucks air like you wouldn't believe from ANYWHERE! Forced induction means literally that. I would tape those holes up immediately as otherwise your money saving intake will land you a sizeable bill. If you don't believe me call a tuning company and ask their view.
Click to expand...

Yeh i belive you, iv not had my car like this for a while. But i remember when i took off the whole engine top and forgot to put it in the next day and drove off.

I was a bit worryed half way, but on the plus side it sounded AWESOME!!...
 
JJ.Foulds said:
But i remember when i took off the whole engine top and forgot to put it in the next day and drove off.

I was a bit worryed half way, but on the plus side it sounded AWESOME!!...
Click to expand...

:sign_omg:
 
JJ.Foulds said:
Well its just a square space in the old filter bay now, so that would help right? lol.

and yes probly not the best looker!

JJ.
Click to expand...

It's not always the case, you can create changes in air pressure and turbulence in an open space that's not the correct shape/design. You can sometimes find that an open space is more restrictive than having a filter in it dependant on a lot of characteristics. The same effect (in reverse) can be seen with an exhaust for instance, you will find that removing a silencer box and sticking a straight piece of pipe in its place will sometimes drop the power a small amount.

The box itself is a really bad shape for air flow (I'm pretty sure that's deliberate?.)

The air temps will probably be pretty much the same as the original filter set up
 
Air temps aren't really that important with a forced induction intake system as the turbo will make it a lot hotter and it's the intercoolers job to cool the charge air as much as it can before it enters the engine. Obviously density of air comes into play too and te cooler the air the better.

A turbo can only take on and process a certain volume of air depending on its size etc. the best induction kits are normally the ones that allow the turbo to take in as much air as it can.

Some serious gains have been had on the 1.8t engine just from allowing the turbo to flow easier and the 2 biggest restrictions have been the TIP and the filter.

Has anyone done any extensive testing with a 2.0TDI to see what works best?
 
Westy said:
Has anyone done any extensive testing with a 2.0TDI to see what works best?
Click to expand...

Not seen any threads on 2.0TDI filters recently, particularly including extensive testing.

The 2.0T has had a lot of research conducted and one of the things that was noted during the testing was that unless you are going to write a bespoke remap to include MAF scaling then the 2.0T engine cover has a 67mm MAF pipe and this needs to be maintained for replacement pipework. The system isn't ideal as there are many kinks in the pipe of aftermarket units as the pipework meanders round to the front of the bay. At least the OEM engine cover as flawed as it is allows air in without so many right angle bends in the pipework. The standard filter is good for 300bhp, but it's worth increasing the surface area if you intend to go significantly beyond that (I'm led to believe that the outer surface area of the filter media is directionally proportional to how much outright power that can be delivered by the turbo. So whilst you can de-restrict all the pipework, you'll always have to factor in the MAF pipe as the greatest restriction.
 
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Don't bother with doing anything to the TDI filter, the standard box & filter are good enough for over 230bhp as is the intercooler. After market filters tend to play havoc with the MAF, usually meaning having to replace it after a short period of time. TDI's are a lot more sensitive to a failing MAF than the petrol engined models so it's really not worth the risk.
 
Wouldn't a larger TIP and filter allow the turbo to flow better and therefore pull more air across the MAF giving a higher reading? Even though the MAF tube remains the same size it should see extra airflow or am I missing something?

You'll have to excuse me as I've no experience of any of the 8P engines.
 
Westy said:
Wouldn't a larger TIP and filter allow the turbo to flow better and therefore pull more air across the MAF giving a higher reading? Even though the MAF tube remains the same size it should see extra airflow or am I missing something?

You'll have to excuse me as I've no experience of any of the 8P engines.
Click to expand...

This is 2.0T again, but gives you a pipe by pipe breakdown of the dev work done on my last S3 LINK
 
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Great info Warren thanks.

That's what I'm talking about, reducing the restrictions all the way from turbo to filter. Removes the bottle neck and the large open filter allows a lot more air in then any closed airbox can.

I can now see the differences with the 2.0T compared to the 1.8T. Your MAF is not mounted in a tube (one piece) like on the 1.8T is it? It's a thin elelement that slides into the side of an existing tube. So you can't just start using silicone reducers and the like to attach a bigger necked filter.

Big learning curve this ;)
 
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