Before we start, I'm new to petrol turbo engines as well as Imprezas.

I've got a Forge V-T-A BOV, but it doesn't seem to dump from cold? I allow the engine to warm up before giving it some, but it seems like it takes ages before it starts venting.

Is this a normal thing?

 

You wouldn't have that problem with an STI.

 

Um thank you? Not really a helpful comment for a newbie is it? I assume you weren't told as a child that if you've nothing nice or helpful to say then keep your trap shut? Ovie not...

 

Welcome sounds like you'll fit in lovely on here

 

Thank you. I just don't have time for useless childish comments. It sorta brings the whole forum down

 

I dont know much about bov nowadays boss but years ago I had one that didnt dump so I took it off and it was stuck solid so I pushed it to free the spring and sprayed a bit of wd40 and it was fine for years.
As I say it was a while ago mate ( escort rs turbo ) so dont take my advice as gospel. Im sure someone more in the know will be along shortly.
Ta.

 

I dont know much about bov nowadays boss but years ago I had one that didnt dump so I took it off and it was stuck solid so I pushed it to free the spring and sprayed a bit of wd40 and it was fine for years.
As I say it was a while ago mate ( escort rs turbo ) so dont take my advice as gospel. Im sure someone more in the know will be along shortly.
Ta.

 

Thank you, I'll whip it off have have a look at that as a starter for ten

 

And for your next forty points, whip it off, chuck it and buy a recirculating one.

 

I'll stick with just the ten points then if its all the same to you

 

You'd have thought so, wouldn't you?

 

I'm more in the know, but he rejected MY advice out of hand .

 

i see this sti envy is spreading to every post you comment on matt

 

You would be wise to listen to alcazar's advice and ditch the dump valve for a standard recirculating one.

VTA's do absolutely nothing but make a noise and can actually lose you power they are also prone to sticking as it seems you have found.

 

Just to add my bit. I love how on this thread subject when telling people to bin the VTA and refit a recirculating unit NO ONE explains why this is the best option which to a newbie will help them out.
So here is the main reason why;
If the car is running a Mass Airflow Sensor the use of a VTA unit upsets the fuel metering due to the MAF telling the ECU that X amount of air is being drawn into the engine, so the ECU operates the injectors accordingly to meter the right amount of fuel. When the VTA operates this discharges some of the air from the intake track with a end result being a rich mixture. This results in rough running and poor power, in worse case the excess fuel could get into the oil eventually killing the engine.

 

But the 'advice' you gave was delivered without any explanation and didn't actually contribute to the problem that I have.

I like the noise tho

I understand where you are coming, and thankful of someone that has taken the time to explain a little of the technical side. I know the risks of using VTA with a MAF etc. but at the mo I like the noise and TBF changing it out isn't top of my list unless it's broken.

Basically all I'm trying to find out is if BOV's are prone to sticking or something like that.

EDIT: Which pflowers has mentioned, thank you.

 

I didn't bother to explain my advice for two simple reasons:
1. a search would turn up LOADS of threads explaining why dumpvalves can cause problems, and what problems, and,

2. I knew you were going to say either, "But it's MY car and I want one!, or, "But I like the noise!".

So why bother?

 

But you seem to have neglected to actually read my original post. My car runs fine with no problem whatsoever. I am asking if the valve itself is problematic. You just see 'BOV problem' and assume that it's another noob that doesn't know how forums, or more importantly the search function, works.

 

Nope.
Read your post, gave advice as I saw it: GET RID.

Simple enough for you?

I mean, come on: you have a problem with an un-needed aftermarket part. What do you do?
REMOVE IT.