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 ...

For enthusiasts looking to get into a European vehicle, the 2005-2008 (B7 chassis) of the Audi A4 is a great option. The popular engine choice for the B7 would be Audi's 2.0-liter turbocharged FSI ...