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Technician checks a modified street car on a chassis dynamometer inside a California emissions-testing shop.

California’s SB 1069 Gives Tested Aftermarket Parts a Faster Route to Market

California’s SB 1069 lets experienced manufacturers seek conditional approval for tested aftermarket parts while CARB finishes its EO review. It does not legalize every modification.
Polestar electric performance car stopped at a United States border checkpoint with connected-vehicle software graphics

Why Polestar Can’t Sell New 2027 Models in America Under the Connected Vehicle Rule

Federal connected-vehicle rules prevent Polestar from selling new 2027 models in America, but existing cars and eligible older inventory remain legal.

How To Test a Ford Fusion MAP Sensor

The Ford Fusion MAP Sensor in your 2.5 liter 4 cylinder engine plays a huge role in your Ford's EFI system. Otherwise known as the...
Acura RSX green immobilizer key light flashing during a crank-no-start diagnosis

Why Is the Green Key Light Flashing on My Acura RSX?

A flashing green key light means your Acura RSX immobilizer cannot validate the ignition key. Learn how to test the key, fuses, receiver, relay and PCM communication.

DTC P0135 – How To Service Your 02 Sensors

The P0135 Check engine light is a OBDII Trouble code informing you that there is a problem with one of your oxygen sensors. Your vehicle's...

How To Reset the SRS Light in a Infiniti I35

The Safety Restraint System in your Infiniti I35 is designed to keep you and your passengers safe in the event of a collision. The...

How To Smog your Honda Swap

Emission tests and smog tests are a difficult roadblock for any engine swapper, and today we'll be showing you how to smog your Honda...

FAQ : Is My Exhaust Legal?

Easily one of the most asked questions of any automotive enthusiast, "Is my exhaust legal?" is one posed to many shop owners and smog...