Variable Tumble Control System
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(Redirected from VTCS)
Variable Tumble Control System (VTCS) is a Mazda automobile engine technology that optimizes the "tumble" of air entering a cylinder. This increases fuel atomization, improving emissions. A butterfly valve opens at low RPM to increase turbulence of the intake charge. This is also present on some Subaru models, commonly known as "TGVs".Template:Auto-part-stub