Just wonder what actuator should i use in my evo 8 on my fp red turbo . The fp 18 psi or the 25psi . Id say by time car is tune and all i will be runinng around 1.5-1.7 bar boost on 2l forged engine .

 

So, in Yankee speak, you will be running right around 22-25 PSI, right? What device will be employed to control boost?

I would say go with the 25# actuator. Either one will be serviceable for controlling peak boost in the 22-25 PSI range. It depends on whether you are going to want to run high levels of WG spring pressure or not. But, either will do the job of contolling peak boost at 25# on a slow spooling turbo like the Red. It is a JB Red I am assuming.

 

Ye id be running between 22-25 psi . Im looking for an apexi Avc-r at the minute .

 

I would go with the 18psi wga and pre-load it to spike 22-23psi. The 25psi wga would work but it is better to have a wga that you can pre-load to limit the amount of boost it can bleed in higher rpms. You won't be able to pre-load the 25psi wga. Also don't waste your money on the avcr.

Mikey

 

Mikey is right. The 18 pounder is best for running 25 PSI on your Red if you are willing to go to the trouble of modifying it(ie, shorten the actuator rod length), because you can run more preload than you would be able to run with an unmodded 25 pounder.

Preloading the actuator spring will pill the flapper valve down tight on its seat whereas an unpreloaded WGA will allow the flapper to crack off its seat and start lifting sooner. This premature flapper lifting kills turbo spool.

 

Were is the best place to buy the fp 18psi actuator and is it a big job to modofy it . I was onli going to buy one of the avc-r ro set boost by gear so could actually take off . Plus was getting it for 250 euro so not costing me alot

 

Is there a functional stock IX actuator on your Red already?

 

imo if i were you i would just get a 18psi map wg its a decent amount less than the fp unit

 

No, get the FP wga.

Mikey

 

No dont have any actuator at the min. We're best place to buy the fp actuator and how much are they roughly ??

 

Both the FP actuators(18#, & 25#) cost $229 on Lancershop. Wow, I can recall when they cost about $120 I think.

 

Take a look over on the Private Evo 1-9 For Sale/Wanted>For Sale-Engine/Drivetrain/Power classified forum as there is a brand new FP HD 25# IX actuator listed for sale at the relatively low price of $150. It won't last long.