Alex's Autohaus

SEPTEMBER 30, 2024

Exhaust Gas Recirculation (EGR) Valve Issues EGR valves redirect some exhaust gasses back through the intake side of the motor, allowing the harmful emissions to combust again, reducing the overall pollutant output of the motor. In addition to failing emissions tests, a failed EGR valve can impact the way your engine runs.

Engineering 89

Engineering Emissions Testing Utilities Oil Change 89

Alex's Autohaus

FEBRUARY 28, 2023

The S6 and S7 no longer utilize the 4.0t. The RS7, S8, and new RS6 Avant also utilize it. Outside of Audi, the Porsche Panamera, Lamborghini Urus, and Bentley Continental, all utilize this motor. Keep in mind, downpipe upgrades will prevent you from passing emissions tests and may not be legal in all areas.

Utilities 52

Utilities Engineering Emissions Testing Software 52

Alex's Autohaus

DECEMBER 30, 2022

You will not pass emissions tests with downpipe upgrades, and in some areas of the country, they are illegal for use on public roads. is utilized to heat air to water heat exchanged to reduce air intake temperatures. To get more power from the stock turbos, the exhaust needs to be modified.

Engineering 52

Engineering Software Emissions Testing Car 52