MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: Sammy on April 25, 2012, 01:51:45 pm
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Just want to know how many people on the forum have these forge spacers on? Has there been any problems with running them? I know they are not for performance gain and just a noise maker, anyone?
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You'll lose around 20bhp & gain an annoying noise. Don't do it :signLOL:
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A powerloss really? lol
I thought forge made this with enough research and they claim no powerloss as the the diverter is closed during acceleration and makes the sound only when throttle is released so how with the powerloss?
Also there is a proven dyno somehwere with it on and without and there was no powerloss?
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I think it's because the OEM diverter valve recirculates the air unlike a dump valve. As the forge one lets the air out the system, the system is not functioning how it's designed to, hence the loss of power
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I think it's because the OEM diverter valve recirculates the air unlike a dump valve. As the forge one lets the air out the system, the system is not functioning how it's designed to, hence the loss of power
Its been proven on a dyno for no powerloss so am just a bit confused.
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Nick at R Tech did the test & it showed ~20bhp loss with the spacer. The engine isn't designed to work in this way
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I was given one. Fitted it and took it off a little after because it sounds GAY.
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I've got one - felt no powerloss at all so don't really understand that :confused: - Im also removing this weekend as im fed up with the noise.
Novelty factor mate - for £20 - gained nothing, lost nothing and had a laugh :happy2:
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I've got one - felt no powerloss at all so don't really understand that :confused: - Im also removing this weekend as im fed up with the noise.
Novelty factor mate - for £20 - gained nothing, lost nothing and had a laugh :happy2:
second that
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I think it's because the OEM diverter valve recirculates the air unlike a dump valve. As the forge one lets the air out the system, the system is not functioning how it's designed to, hence the loss of power
Also recirculating just keeps the turbo spinning between shifts particularly but on such small turbo like these its hardly noticeable
plus just because its recirculating it doesn't add anything to the final bhp outcome of the machine, if you have power loss from a spacer or a after market blow of valve you havn't installed it properly simple as.
This whole forge spacer thing has been played over and over about whether it does or doesn't loose bhp
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Read on:
From mike@forgemotorsport on Vortex...
Completely irrelevant to someone's personal preference concerning sound or the engine management system's requirements for valve function.....
.... whether the air is vented to the atmosphere or recirculated is completely irrelevant to spool or any amount of “lag” supposedly created.
A valve exists in a turbocharged system as a failsafe against such a thing altogether.
"Lag" would only be created if there were no valve in place at all, and the residual charge air inside the intercooler piping "backed up" into the compressor wheel at throttle lift slowing it down.
Whether an atmospheric or a recirculating valve is used to discharge the residual pressure, either valve is still able to vent at throttle lift allowing the compressor wheel to maintain it's rate of speed, thus preventing any reversion of pressure and inducing any “lag” or having an affect on spool.
The discharged air being recirculated back into the intake side of the system will have absolutely ZERO affect on spool as opposed to an atmospheric setup.
The intake side of the system is under constant vacuum vs. actual atmospheric pressure (altitude), so the only arguement that could be made is that the vacuum effect acting on the discharged/vented air somehow keeps the turbo spinning faster than if it's vented to the atmosphere.
There is ZERO empirical evidence that one setup is more beneficial or detrimental than another in relation to compressor wheel speed.
If the use of an atmospheric valve is possible without any negative side effects concerning the engine management system of the application, as is the case on this vehicle, then it becomes purely a matter of personal preference.
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i got one! come free with my remap lol.
it just puffs me meth lol.
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i got one! come free with my remap lol.
it just puffs me meth lol.
Are you running one with your map? Nick from R tech highly advises not to run those and also removed it from my mates gti while it was getting mapped so confused on why yours has it? lol
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yea it is, he needed some bolts so he took mine and put this in its place lol.
they are rubbish, i can hear it getting stuck open some times so have to let off n on.
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yea it is, he needed some bolts so he took mine and put this in its place lol.
they are rubbish, i can hear it getting stuck open some times so have to let off n on.
If you look at the spacer it cant get stuck open there is no valve it, if anything its your diverter and that would happen even if you didnt have the spacer on but you wouldnt hear it, The spacer just makes the diverters function more audible
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lol i have not look at it, it was just on there when i got the car back, i dont really hear it to be fair.
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I have back to back dyno graphs before and after a spacer, will post.
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Waste of time and money IMO. Just buy a intake system and with that comes the noise most people are after and proven bhp gains, no loss of power. It may cost more but your getting bhp increase the noise that your after and some eye candy when under the bonnet! :happy2:
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I have back to back dyno graphs before and after a spacer, will post.
I for one would be very interested to see these :happy2:
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No benefit for me
:popcornsoda: look forward to the b2b dyno
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I had a spacer on my FR which sounded loud and nice for a time.
Anyway I fitted one to my cupra and it was so quiet I removed it again.
Has anyone used the Forge valve with built in spacer? The vac operated one.
Oh Mike no switching available on stage 2 either!! :confused:
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Waste of time and money IMO. Just buy a intake system and with that comes the noise most people are after and proven bhp gains, no loss of power. It may cost more but your getting bhp increase the noise that your after and some eye candy when under the bonnet! :happy2:
Very interested to see the graphs too, trick gti are you k03 or k04? Reason I am asking I'd because I have a k03 with intake also but do not get any sounds other then the sound you get in acceleration, mine is DSG btw
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I was given one. Fitted it and took it off a little after because it sounds GAY.
I'm surprised you didn't fit a second one. :booty:
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I was given one. Fitted it and took it off a little after because it sounds GAY.
I'm surprised you didn't fit a second one. :booty:
I chose to change cars. Much more effective :P
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X2..
I did wonder what you meant by sticking open.. its basically a middle piece with three holes that the air rushes out to create the phhhhh noise..
At the end of the day all personal opinions - i enjoyed the novelty and now.moving on - plus i have a intake now :)
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Any comparisons available yet anyone?
Ive got the forge valve for mine which sounds quite nice and works well.
I've removed it as its going into Seat tomorrow for service.
Left my Dblias intake on though.
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@PDT any graphs yet?
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If your diverter valve is getting stuck (or you believe it is ) , you can buy uprated springs from Forge to replace with the one inside your OEM diverter valve (piston type). These are available in four strengths depending on your boost requirements and are represented by colour.
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Good for making people jump in carparks.