Idle

[hayesey]

an ISV from a golf wont be much use because this device on a polo isn't an ISV and doesn't do the same thing.  It provides extra air when the engine is cold and gradually closes up as it warms up, that's all.  Once up to temperature it it closed.

It's a totally "dumb" device and the wires going to it are simply 12v power for a heating element that is inside it.

The ISV on a Golf Digifant is an ECU controlled thing that can be opened and closed by the ECU to keep a steady idle.  Polo Digifant I uses ignition advance/retard to control idle speed.

[scotsjohn]

Yeah that's what was going on in those pictures which are actually of mine about 7 years ago.

Also showing auxiliary air brick in background; thinking of getting one myself, my lump of concrete's getting a bit heavy.

[hayesey]

it's a not a brick it's an advanced lightweight tactical gate retaining system.

[Jezza-7]

it's a not a brick it's an advanced lightweight tactical gate retaining system.

Loving the technical name!