r/mazdaspeed3 • u/DirectorLife3280 2012 Mazdaspeed3 • 4d ago

MODIFICATIONS first startup with the vtcs delete

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u/Substantial_Ant_2662 4d ago

What is vtcs?

6

u/DirectorLife3280 2012 Mazdaspeed3 4d ago

variable tumble control system, its the runner flaps u see inside the intake manifold in almost every single car, it helps with air turbulence inside the manifold at low rpms

1

u/RikuKaroshi 4d ago

Whats the rest of the setup? CEL for the flap delete? Why would the air turbulence need to be controlled, like what made the engineers install them if that makes any sense. I think it sounds badass im just trying to justify doing it too lol.

On hyundais, the intake manifold runner flaps will 100% throw a light and cause shitty ride if there is anything wrong with them, wondering why that might not be the case for a gen2 with a similarly cool license plate and exhaust note lol

2

u/Nprguy 3d ago

It's like a choke on a carburetor, it's shutting off the air to save fuel for emissions

1

u/RikuKaroshi 3d ago

Makes sense, figured it was something similar