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Performance Filter - EA113 FSI Engine


Products are built-in small batches when materials are available and sell out quickly. Contact us and we’ll notify you when this item is in stock again.

Production Time: 2-3 weeks

USA Shipping

Ships in 1-2 weeks. 

The Double Apex Performance Air Filter will increase your engine's performance by reducing intake restriction and allowing the turbo to breathe easier, without sacrificing filtration.

This reusable filter is manufactured to Double Apex specifications by industry leading manufacturer Green Filter USA and proven by our in-house test data. Green Filter supplies the same synthetic oiled, woven cotton fabric filter technology to top racing organizations, including Saleen, Mazdaspeed, Chip Ganassi Racing and the IMSA Porsche GT3 Cup Challenge. It is also used by Mopar in their factory warranty backed performance intakes and filters. 

This Fits: 

Year Make Model Engine Type Notes
2004-2008 Audi A3 2.0L F/I Turbo
2008 Audi A3 2.0L F/I All
2009-2011 Audi S3 2.0L F/I All
2006-2009 Audi TT 2.0L F/I All
2006-2009 Volkswagen Eos 2.0L F/I 200 BHP
2007-2008 Volkswagen Eos 2.0L F/I All
2012-2013 Volkswagen Golf 2.0L F/I All
2007-2009 Volkswagen Golf V 2.0L F/I All
2004-2009 Volkswagen Golf V 2.0L F/I 200 BHP
2006 Volkswagen Golf V 2.0L F/I Turbo
2004-2005 Volkswagen Golf V 2.0L F/I All
2011-2013 Volkswagen Golf VI 2.0L F/I 235/270 BHP
2009-2010 Volkswagen Golf VI R 2.0L F/I 270 BHP
2006-2008 Volkswagen GTI 2.0L F/I All
2006-2007 Volkswagen Jetta 2.0L F/I All
2006-2008 Volkswagen Jetta GLI 2.0L F/I All
2010-2011 Volkswagen Jetta V 2.0L F/I TFSI
2005-2009 Volkswagen Jetta V 2.0L F/I 200 BHP
2006-2009 Volkswagen Passat 2.0L F/I 200 BHP
2008 Volkswagen Passat 2.0L F/I BPY engine code
2006-2007 Volkswagen Passat 2.0L F/I All
2005 Volkswagen Passat 2.0L F/I 200 BHP 3C model

Test Results:

We’re not interested in selling something that has no benefit or that can’t keep up with the competition. Any performance product we sell will be backed up by thorough testing and analysis. A performance air filter has a simple job, minimize restriction while still effectively cleaning the air. Our manufacturing partner Green Filter USA has already tested the filtering performance, what’s missing is application specific performance testing.

The first step was to determine if the Double Apex filter flowed better than stock and to see how it stacked up against the competition. Next we'd make sure the bench results translated to the real world.

Bench Testing

We constructed a simple flow bench using an actual air box from a VW 2.0T engine and in addition to the OE stock filter picked two popular performance filters currently on the market; an unoiled "dry" filter, and another brand oiled filter.

The test was simple. Using a variable speed fan we determined the minimum amount of power the fan needed to keep the ball afloat. Lower power, or voltage, meant a less restrictive air filter. 

Bench Test Setup
Test Subjects
















Bench Test Results

The stock filter was, not surprisingly, the most restrictive of the bunch. Coming in a close second was the dry filter. This made sense considering the primary advantage of a dry filter is easier service, at the expense of performance. On the other end of the spectrum were the two oiled filters with a slight edge going to the Double Apex filter. We believe the advantage can be attributed to the superior flow characteristics of cotton fabric vs. cotton gauze and lower rubber seepage into the fabric due to the precision molding process used.

Road Testing

The best way to test an intake component on a vehicle is in real world driving conditions. Outside of a full size wind tunnel it is nearly impossible to properly simulate air flow. Most dyno fans are single speed and don’t flow a realistic amount of air.

Using a Race Capture Pro, a motorsport grade data acquisition system, we measured the intake restriction at the turbo inlet and vehicle acceleration at wide open throttle. The OE filter and Double Apex filter were tested. Results are an average of multiple tests run in two directions to account for minor elevation changes. The test vehicle was a stock 2014 Jetta GLI with a 2.0T EA888 Gen 3 engine.

Road Test Results

The air flow restriction with the Double Apex filter was significantly less than the OE paper filter. This results in lower engine pumping losses, higher turbo compressor efficiency and as a result lower intake air temperatures. Improved acceleration and power gains were seen throughout the RPM range.

Installation Instructions:

Installation should take a professional about 15 minutes and detailed instructions make the filter easy to install at home. If you need an installer recommendation in your area please contact us.

  Performance Filter Installation Instructions


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