My 2012 Mark 6 Volkswagen gti has a NueSpeed Cold Air Intake system on it with a K&N Air Filter. It helps deliver more air for the turbocharged 2.0 liter which I have tuned to Stage 1+ using a Cobb ...

Regular readers will recall last month's testing of two Motordyne bolt-ons that successfully proved Helmholtz resonance can be used to increase exhaust gas scavenging and help your ride put out a few ...

While the OEMs overwhelmingly opt for paper air filters, cotton gauze filters are a staple of aftermarket induction systems. So what makes the cotton gauze medium so much more conducive to airflow?

One of the first modifications many enthusiasts make to their ride is adding a cold-air intake. This replaces the stock intake, a complex, convoluted contraption of pipes and baffles that keep the ...