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Diesel Emissions of Passenger Cars

Hollenshades Auto Service

Not long after the diesel engine’s reintroduction to the passenger car market manufacturers were forced to admit they inserted software and devices to fraudulently pass EPA Tier 2, California LEV-II ULEV, and European emissions tests.

Car 52
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Purge Valve Replacement: Why It’s Important + Costs Involved

RepairSmith

A failed emissions test: If the canister purge valve allows excessive vapor to escape from the charcoal canister, your emissions will likely exceed the EPA (Environmental Protection Agency) standard. The ECU can fail for several reasons, including water damage, corrupt software, and bad sensors.

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P0157 Code – Oxygen Sensor Circuit Low Voltage Guide

RepairSmith

For example: Software Bugs : Software issues within the PCM can cause it to misread sensor data, setting off false trouble codes. A malfunctioning converter can’t effectively reduce harmful emissions, leading to environmental harm and potential legal issues.

Banking 52
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Check Engine Diagnosis in Los Angeles

RepairSmith

Here in Los Angeles these CELs and trouble codes can result in a failed emissions test, preventing you from registering your vehicle. Our ASE-certified technicians have the latest tools and software to diagnose your vehicle, giving you insight and recommendations on how to solve the problem.

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Best Upgrades for the Gen 2 4.0t [EA825]

Alex's Autohaus

Keep in mind, downpipe upgrades will prevent you from passing emissions tests and may not be legal in all areas. Unitronic and Integrated Engineering both have, or are developing, software and hardware to support hybrid turbos made by TTE. This modification is for track vehicles ONLY.

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Best Upgrades for the First Gen Audi 4.0t (S6, S7, RS7, A8, S8)

Alex's Autohaus

Smaller turbos and less aggressive software from the factory led to a power output of 450 horsepower and 444 lb-ft of torque. You will not pass emissions tests with downpipe upgrades, and in some areas of the country, they are illegal for use on public roads. Upgrade Path One: S6, S7, A8 The low-output version of the 4.0t

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Ashlee Church: #NotLikeTheOtherGuys

AutoSuccess

Of course, Church’s biggest test came just six months after she opened the dealership in the form of Volkswagen’s Turbocharged Direct Injection (TDI) crisis, also known as “Dieselgate.” One of the main reasons we had pursued [Volkswagen] was because of the TDI,” Church says.