James_TypeR

Hey all

a freind is buying a new scooby impreza wrx soon, but they are wanting to know if changing standard bov to a atmospheric one... will it void their warranty, or can they change it?

Cheers
James

Haxzer

Yes mate it will, anything to do with engine, Exhaust etc... will void it, I am pretty sure the only thing you get away with is cosmetic upgrades... :-(

I am sure someone else can verify this.

Cheers

Haxzer

corradoboy

And he will look a **** to everyone except his fellow chavs

You have to question, apart from a silly noise, why does he want one. The standard recirc valve is perfectly adequate upto much higher boost levels than standard. VTA's can damage your engine, may loose you some power and will upset the smooth running of the car. Waste of money IMHO

chris's scooby

Well said that man! ^^^^^

James_TypeR

cheers for replies dudes.

im sure she wont appretiate being called a he tho but then again i never did specifiy hehe.

i do have an atmospheric one on mine, but i have a front mounted intercooler and thought it'd be better to have one? i do get the fluttering which makes it worth while hehe

cookstar

iTrader: (6)

is that the fluttering that your hear on real rally cars. often wondered what that noise was.

The Incredible Hulk

Whilst I sort of agree with the sentiment, the relevance of your response to the question asked is questionable. If the chap wants one so be it, now if he asked about the benefits / drawbacks,.....

corradoboy

I must question the relevance of your post too, seeing as the original poster seems to have accepted all the comments made and seen the humorous side, whereas you have jumped up on some moral high-horse to police the miscongruous intentions of individuals hidden by the annonimity of the internet. There are bigger ills in this world than sarcasm

The Incredible Hulk

Nah, nothing so thought out - just a spare few minutes before the excitement of cleaning the upstairs toilet - nice reply though

Kevin

corradoboy

sti-04!!

Just remove it

Sounds better

JSY106

Hi guys! I'm the one asking whether it would void the warranty. If so do Subaru make an atmospheric dump valve??

P.S. I'm a girl not a guy (or a chav! )

corradoboy

Sorry for the chavette comments I'm sarky but really quite pleasant

No, Subaru don't do VTA's. The air is recirculated for a reason, to help slow the turbo in a controlled way, rather than the sudden stop which can shatter the blades in extreme circumstances. Also, the MAF and AFR readings are used by the ECU to correctly fuel, and by dumping out the air and not telling the ECU it will inject more fuel than required by the reduced quantity of air, resulting in some being pushed through the exhaust unburt. This will contaminate the cats, and/or explode in the exhaust due to the heat causing at best some pops and bangs and at worst may damage the cats. The rest of the fuel can be pushed past the piston rings under compression, washing off the lubrication film causing bore wash and accelerating cylinder lining wear. Some of it may also make it's way to the sump where it can thin the oil, but this is not really an issue if you change it regularly.

And that's the end of tonights scary story Sleep tight kiddies

FirebirdUK

So, you think they're a bit of a no no then... LOL - always the negative vibes...

Gear Head

iTrader: (2)

They are supposed to be ok if you have the car mapped for it. Then again, that would be one expensive fart valve!

Gary C

I think thats the compressor stalling. WRC cars I believe dont tend to run dump valves.

hades

Probably not. The fluttering you hear on real rally cars is, IIRC, often because they don't have dump valves. This means that on and off the throttle, the turbo will spin up and down and stall very quickly. The popping noise is usually anti-lag. They have the advantage of being able to change turbos every race. Running anti-lag and no dump valve isn't good for a turbo if you expect to do 1000's of miles, however.

Chris - not sure exactly how you can map for it with a standard ECU which use the MAF to measure how much air comes in - nothing measures how much is ejected via the dump valve, and how much goes through the cylinders. I can see how it might work on a MAP sensor based ECU such as the link, but that gets even more expensive.

JSY106

Thanks for all your comments. Gutted my new baby won't sound pretty but hey rather have no noise than a broken scooby!

BTW Hello Everyone. I'm new! (If you hadn't already guessed!!)

mikeswrx02

Normally u will void the warranty but depends which dealer u go.
I find that subaru dealers dont really care for small mods.
I've been for few bits and bobs done under warranty and one clutch change even tho i had full decat, dump valve, induction, wheels etc.

No probs at all and excellent service.

My area within 10 miles 3 out of 4 will help without booking car in!!! I think subaru dealers beats other car dealers by far.

Say if u are going for massive warranty work ie blown engine etc, obviously take off any mods before u show them the car!!! hehhehe

Mike

Brun

Brun - forge vta for 4 years
If that makes me a chav then so be it - i ain't gonna lose sleep