hi there, can any VF35 owners tell me if any companies make an adjustable actuator for the turbo? i have already phoned Forge Motorsport and they say they don't, I'm at a bit of a loss with this one so any help would be great. Thanks,

Jamie.

 

Forge dont make one for the VF35, but do for the VF34 and I have been reliably informed that it is the same fitment. I hope it is, as I am having my VF35 wastegate ported and need the uprated actuator now. Look on ebay, £124 plus £8 p and p.

 

vf34 actuator fitted to my vf35 runs sound

 

did you guys running the forge actuator notice any difference in boost control?

did it help hold boost longer without it dropping off?

 

Nice one guys, thanks very much. Myles whats the benafit of porting the wastegate? i thought you only needed to do that if you had the cat removed? i'm asking because I'm getting a simtek shortly and need to sort out all the little details before then lol.

 

Boost creep can be an issue, Im told. When you port the wastegate you can get some wastegate 'creep' so you require an uprated actuator to hold it back.

 

Ah ok, so how long have you had your vf35?

 

Funnily enough, its not on yet! I have been spotting bargains on this site and others and picking it up slowtime aiming for 330-340bhp. I now have all the parts, and my mate has ported the wastegate and the headers (bought for £15 with an up-pipe!). I just require the actuator and to make a date with Dynamix!

 

Sounds good, i've been staring at mine for a few months now lol, doing everything slowtime to. I'm not to sure what to expect from the vf35 but alot of people tell me i won't stop smiling for months

 

We will have to compare notes when we get them done!

 

defo, i love hearing what othere folk are doin to thier scoobies as this is my 1st one (and hopefully my only one) so i'm still very new to it all. i was a VAG lover before the impreza. i've got quite a few extras going on with it, it's been a bit of a makeover/restoration project. its taken me quite a while to do not very much so far lol

 

What do you mean: was?!...

 

I doubt an uprated actuator will do much tbh.

I would save your money and fit a 3 port boost solenoid and get it mapped with that instead.

 

Porting is done to avoid boost creep....

dunx

 

Hello Duncan, how much should i expect to pay for a 3 port boost solenoid?

 

lol joz, i guess your right, i still have a soft spot for a mk2 GTi 16v, i would have one as a second car in a heartbeat!

 

£30 second hand
£60-£80 new

 

Ah thats not so bad at all. Sorry for all the questions but what are the benefits of the 3 port? is it greater controle over the turbo's behaviour or am i way off the mark lol?

 

No, you misunderstand ... Think of your statement in another, more perverse way!...

 

lmao, gotcha!

 

Yeah, it offers finer, more accurate control over WDC (when compared to how a 2-port works).

If moving to a 3, form a 2, it must be remapped though.

 

i've just checked the car and it already has a subaru one. is that what you talking about or did you mean an aftermarket solenoid?

 

Yes, but it's a 2-port Subaru one.

What Duncan's saying is rather than getting a new WG act/spring etc, instead replace/remap a replacement OEM 3-port BCS (from the early MY93-96 cars) -- c.£30 2nd hand off eBay (normally always a few available...)

 

Sorry to jump in on this, Duncan, will a three port stop the boost creep, and negate the requirement for the uprated actuator? If so you may save me £80!

 

hi joz this is what i've got on my car, made by denso if thats any help?

its not the actual pic but its exactally the same...

 

Oh right. In that case you do have a 3-port already fitted!

 

A three port (new, £65 including fittings) allows for more precise boost control. It does not put under control or assist with boost creep per se.
Boost creep is exactly as the name suggests and is caused by exhaust gases not being able to exit the wastegate appeture quickly enough and thus backing up during wide throttle angles. Some turbos are more prone to boost creep than others when used beyond the intended design power band. One cure is to port the W.G appeture and if you are going to do that you may as well port the exhaust turbo inlet at the same time.
Fitting the right actator is important but if you start swapping actuators or playing with adjustable boost actuator settings then, to put the boost under optimal contol, you may need to remap the boost control WG DCs in the ECU or via the AVC-R or similar if you are using that method.

 

Cheers Harvey, so porting the wastegate aperture will help with boost creep, but will the stock actuator then not be man enough for the job, in theory?

 

I have never had a problem with the std actuator on a VF35. It is fine and doesnt need changing nor do I think you would gain anything from doing it IMO

 

I think Duncan is right. Unless there is an issue with your actuator and it is not performing properly because it is defective then changing it will make little difference.
Is it possible that the VF35 and VF34 actuators are the same?
I have new uprated actuators here but it is not a matter of sticking one in the post to you. You may have to be prepared to make a completely new bracket to get the actuator in the right position and you then need to be able to make adjustments to the actuator to set it up properly.