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 ...

If you're considering switching to a K&N cold-air intake, there are some things to consider first. Here's what to know about these mods and if they're worth it.

Direct-injection, variable camshaft timing, forced induction even with all the modern whiz-bang technology, internal combustion engines have been—from their invention—glorified air pumps. So, an ...

As hard-core diesel enthusiasts, most of us have the inherent desire to increase our trucks’ performance. While improving driveability is the simple goal for some owners, having an engine that makes ...

There’s hardly anything on a truck that’s simpler than its air-intake system. And not too many things – maybe only your right foot – that can have as much effect on fuel economy. A diesel engine needs ...

Direct-injection, variable camshaft timing, forced induction … even with all the modern whiz-bang technology, internal combustion engines have been—from their invention—glorified air pumps. So, an ...