Which actuator.

[Richiers]

Was wondering is there good and bad acutators. Think I need a new one. I'm running 28psi of boost. Can you guys recommend the right one please.

Richie.

[rs gus]

-34

[Davecos 4x4]

I would get a genuine one, not an alloy one.

[Richiers]

I know the -34 bit was just wondering is there a difference in say a Collins one or Forge ones or do all do the same job��

[rs gus]

Genuine garret type from msd etc alloy ones r crap

[twin turbo]

Genuine garret type from msd etc alloy ones r crap

agree genuine garrett is the only Choice that hold over time...

[Richiers]

Cheers guys.

[James @ Auto Dynamix]

The name of the actuator comes from the spring used,
The proper -31 and -34 springs are conical, when removed they look triangular, as far as I'm aware only the genuine actuators and the msd ones which are made by the same company use that Spring
The alloy ones use a normal Spring which isn't conical so they are not really -31 or -34!

[Davecos 4x4]

Will the spring shape make a difference though James.

[James @ Auto Dynamix]

It makes a difference to the operation against pressure for sure, the proper springs are progressive, where the others are just flat.

As example when a small turbo escort is fitted with a msd chip they are programmed only to work with the -31 and the controlled overboost doesn't work correctly on any other actuator