Vcds fuel trim measuring blocks

Feb 08, 2016 · CARS.COM — Each year the EPA compiles its Fuel Economy Guide to educate new car buyers on fuel-efficient vehicles. While there are a growing number of cars and trucks that use alternative fuels ... Apr 11, 2014 · On modern computer-controlled cars with fuel injection, the computer is constantly monitoring fuel trim and detonation and making appropriate adjustments in the timing and fuel air mixture to compensate for engine knock. Most of these late-model engines have a sonic knock sensor installed in the cylinder block for just this reason.

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