RS Airbox

[ferret vrs]

I'm with LunchboxGti on this
Paper filters offer poor flow, if you've ever held one up to a fan and then tried the same with a hi end filter you can feel a noticeable difference
I believe the air box is a waste of money for very little gain unless you are going fit a larger turbo and intake system to suit


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[LunchboxVRS]

Having said that there's a tipping point where the flow becomes greater at the price of filtration. You need to find the happy medium.

[ferret vrs]

Get what you pay for, researched and the Racingline appear to be one of the better
Would never consider an eBay special


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[pjam73]

Revo also make a foam panel filter similar to the VWR/Racingline one.

[gadget007a]

There's a good article on auto speed called something like "eliminating negative boost" where an adelaide guy make some real world measurements of the intake system of his Saab turbo and the biggest restrictions were the airbox and the air flow meter.
the standard paper filter gave a very small amount of restriction.
the aim of any intake mods would be to have full atmospheric pressure at the inlet of the turbo at WOT and max rpm

[ferret vrs]

RS Airbox

Well my new filter finally arrived today no thanks to Australia post express delivery from Melb - Brisbane in 11 days!!!!



Put the new air filter in and took it out for a spin
Initial impressions are that it feels smoother throughout the rev range and the slight stutter that it has low down has all but gone
Don't know about extra power - would need a proper back to back dyno run to confirm

And it has more noise!!!
Can here the turbo spooling up now and the diverter valve when you back off


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[HPRS230]

Nice work mate! Huge change in height! So more flow

[pjam73]

re: modifying the air intake by removing the plastic blocking the air flow on the left side...

I can't help wondering why it's blocked in the first place. Engineers and accountants at these companies don't do stuff on a whim. The part looks like it was designed to be clear on both side, yet they've blocked one. What reason could they have for wanting the air to pass via the front of the engine? Extreme cold climates? Is is deliberately slowing the flow of air for some reason? Weather protection?

[ferret vrs]

Unsure, but quite a few after market intakes mimic where the factory unit could take air from?
A couple of tuners I spoke with told me not to bother with an aftermarket intake as the factory system with a few mods and a decent after market filter will easily flow enough air for a stage 2 tune
As you say, they are also a world car hence why we still have a snow screen fitted and in extreme cold climates the engines may need to draw a warmer source of air to function within emissions regulations....


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[ferret vrs]

HPRS230 did you confirm with your mates Golf R if the intake was the same or modified from factory to match what we have done?


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[HPRS230]

R is the same as ours. Blank on right, hole on left. And hole into engine bay on left.

[ferret vrs]

I can now confirm after spending some time driving around "normally" this morning
The car has a much sharper throttle response, it comes on boost earlier and quicker and pulls very cleanly low down through the rev range
Windows up - still quiet as a mouse only windows down can you hear the extra intake / turbo noise [emoji2]



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[HPRS230]

Full Airbox mod done by Ferret this afternoon.
Air filter and Blanking plates removed.

Cheers mate!

[ferret vrs]

All good, bring on the next round of tinkering [emoji7]


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[HPRS230]

I kept this on the down low just in case it didn't work/fit.
VW Part number: 5Q0129849
Which is the trim behind the 'driver's side' air intake 'behind the grill'.
I had Duct tape there and worked fine, but a little look and you can tell something is up. Now it looks stock because it is...