Forge Adjustable Turbo Actuator

[1.8Trip]

Has anyone seen anything good or bad about this?


http://www.forgemotorsport.com/golf1...roduct=FMACVAG

[Kor]

Re: Forge Adjustable Turbo Actuator

Ahh that looks very good. I have not heard of it yet.

[R_Ethug]

Re: Forge Adjustable Turbo Actuator

what does it do?

[Kor]

Re: Forge Adjustable Turbo Actuator

I am guessing "turbo actuator" means "wastegate actuator".

Opens wastegate under pressure. Closes wastegate when pressure drops.

N75 controls flow to this.

Would not be useful for increasing boost amount... maybe be useful for controling boost more closely.

This is what I have put together from reading on Vortex:

The stock wastegate is not adjustable, and opens at about 10psi. The internal spring resists about 6 psi and the remaining 4psi of resistance comes from exhaust backpressure.

If you reduce exhaust backpressure, then your wastegate could be open by the time your turbo hits 6psi. This won't actually happen since the N75 should remain closed until 9-10 psi (stock) or 14-15psi (chip).

However, when the n75 does open, the wastegate will open fast and wide because there is really no resistance there, and so your boost may drop suddenly for a second, then slowly creep back up to the main level. This means power loss.

Also the N75 is not an open-close valve, it oscillates somehow, and so under partial throttle is is letting some boost through, and this may be opening your wastegate more than is ideal.

Anyhow, would be fun to mess with this part for free, but I am not sure its worth paying for.