Blanking plate for removal of dump valve.
26 February 2008, 02:01 PM
#2
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26 February 2008, 02:14 PM
#4
You need a plate that looks something like the base of this ebay special: SUBARU IMPREZA WRX / STI DUMP VALVE BOV 2001 - 2005 on eBay, also Engine Tuning Parts, Performance Tuning Parts, Car Tuning Styling, Cars, Parts Vehicles (end time 01-Mar-08 20:02:27 GMT)
26 February 2008, 06:55 PM
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use your original dv as a template and get a local engineering company to make you one out of a piece of aluminium bolt it on with a new gasket and job done.
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28 February 2008, 01:20 PM
#9
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IIRC, it will only work with TD range of turbo's as the VF series aren't strong enough to cope with the stress this puts the components under.. the result, if I'm right, is lots of loud "chatter" when you lift off as the air is forced back through the blades of the turbo.
Sounds very cool... and I'm a bit unhappy that my stock Hawkeye STi VF turbo wont be up to the job, cause I love that sound.
Cheers,
Grant
Sounds very cool... and I'm a bit unhappy that my stock Hawkeye STi VF turbo wont be up to the job, cause I love that sound.
Cheers,
Grant
28 February 2008, 01:28 PM
#11
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Yea, I agree that it probably will shorten the life of the turbo... but on the TD's I assume its doing a low amount of damage, where as with the VF its apparently a very quick way to kill them. I cant think that if it was really stressing things on the TD series then people would continue to do it?? I may be wrong though......
Cheers,
Grant
Cheers,
Grant
28 February 2008, 01:37 PM
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IIRC, it will only work with TD range of turbo's as the VF series aren't strong enough to cope with the stress this puts the components under.. the result, if I'm right, is lots of loud "chatter" when you lift off as the air is forced back through the blades of the turbo.
Sounds very cool... and I'm a bit unhappy that my stock Hawkeye STi VF turbo wont be up to the job, cause I love that sound.
Cheers,
Grant
Sounds very cool... and I'm a bit unhappy that my stock Hawkeye STi VF turbo wont be up to the job, cause I love that sound.
Cheers,
Grant
Ns04
28 February 2008, 01:38 PM
#16
This really isnt a great idea for any turbo guys - it massively shortens the life of it.
Imagine a turbine spinning at silly rpm + and you are stalling that to 0 in a split second.... hmm it aint going to like it that is for sure.
Sure the top tuners do this, but they are stripping down turbos fairly frequently and want the instant throttle response and dont care about the downsides so much.
Daz - are you sure you want to shorten the life of it?
Imagine a turbine spinning at silly rpm + and you are stalling that to 0 in a split second.... hmm it aint going to like it that is for sure.
Sure the top tuners do this, but they are stripping down turbos fairly frequently and want the instant throttle response and dont care about the downsides so much.
Daz - are you sure you want to shorten the life of it?
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28 February 2008, 01:42 PM
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This really isnt a great idea for any turbo guys - it massively shortens the life of it.
Imagine a turbine spinning at silly rpm + and you are stalling that to 0 in a split second.... hmm it aint going to like it that is for sure.
Sure the top tuners do this, but they are stripping down turbos fairly frequently and want the instant throttle response and dont care about the downsides so much.
Daz - are you sure you want to shorten the life of it?
Imagine a turbine spinning at silly rpm + and you are stalling that to 0 in a split second.... hmm it aint going to like it that is for sure.
Sure the top tuners do this, but they are stripping down turbos fairly frequently and want the instant throttle response and dont care about the downsides so much.
Daz - are you sure you want to shorten the life of it?
Put it this way, both David at Api and Bob Rawle have said that I'll be ok without it, and they both know I'm not the kind of person who wants to be changing components every 5 mins.
Ns04
Last edited by New_scooby_04; 28 February 2008 at 01:45 PM.
28 February 2008, 01:57 PM
#24
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i blanked mine of on my 94 wrx with tdo5 last year, when pavlo mapped the autronic he said was fine, thats enough for me, and still no problems, oh and its running 1.4 - 1.5bar
28 February 2008, 02:09 PM
#26
I am pretty sure the Autronic is a speed density based ECU so there wont be the downsides in terms of jerkiness /fuel economy that can be dump valve related on the MAF based system.
Would still be stressing the turbo though. Pavlo knows what he is talking about and I am sure if he says they can take the extra stress ok - then they will be ok.
I must confess that I love the sound of these in action (way better than a VTA dump valve) but it is the additional wear/stress on the parts that puts me off.
28 February 2008, 02:13 PM
#28
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Out of interest, if any of the people 'in the know' are having a browse of this thread........ would a re-mapped UK Hawkeye 2.5 STi with stock turbo cope with the DV being blanked off, I am running c1.5bar?? 
Cheers,
Grant
Cheers,
Grant
28 February 2008, 02:59 PM
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Hi Bob (Darren ? )
I am pretty sure the Autronic is a speed density based ECU so there wont be the downsides in terms of jerkiness /fuel economy that can be dump valve related on the MAF based system.
Would still be stressing the turbo though. Pavlo knows what he is talking about and I am sure if he says they can take the extra stress ok - then they will be ok.
I must confess that I love the sound of these in action (way better than a VTA dump valve) but it is the additional wear/stress on the parts that puts me off.
I am pretty sure the Autronic is a speed density based ECU so there wont be the downsides in terms of jerkiness /fuel economy that can be dump valve related on the MAF based system.
Would still be stressing the turbo though. Pavlo knows what he is talking about and I am sure if he says they can take the extra stress ok - then they will be ok.
I must confess that I love the sound of these in action (way better than a VTA dump valve) but it is the additional wear/stress on the parts that puts me off.
dam ya worked out it was me!
must admit i had the jerky thing before going over to autronic, paul said this was due to the un dumped air blowing right back to the MAF, hence MAF sh..ting itself,