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Author Topic: dump valve  (Read 2754 times)
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barryg69
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« on: April 19, 2008, 03:15:32 PM »

my mate suggested the other day that i should put a dump valve on my galaxy we both laughed at first but now its got me thinking, is there a kit out there for the Mk2 galaxy 115 tdi Huh?
and is there a difference between petrol and tdi dump valves I'm not even sure were to put it i guess there is some sort of factory equivalent already there but were and what would it look like i wish there was a hayens manual for the Mk2 galaxy :'(
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Ghia-X
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« Reply #1 on: April 19, 2008, 05:06:13 PM »

A wise man once said........

I don't see the point in fitting a dump valve on your TDI. A dump valve or boost recirculation valve is fitted to release the built up boost pressure in the intake system to prevent the turbo stalling between gear changes giving you mega lag. This build up of boost pressure is created due to the throttle flap being slammed shut when you let off the throttle. There is no throttle flap on the TDi engine, they don't need one. (Don't get confused with your 'soft shut' flap fitted in the same place as the throttle body, this is only used when the engine is turned off).

Additional to this, the 115ps is fitted with a variable vane turbo so lag is at a minimum anyway.

So, even if you could plumb the DV in, you wouldn't get the lovely whoosh when changing gear.
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fordpwr
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« Reply #2 on: April 19, 2008, 05:25:17 PM »

get a remap would be much better loads more power take your 115 to around 150-160ps
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« Reply #3 on: April 19, 2008, 06:02:10 PM »

 :'( :'( :'(

ill have to eat more baked beans instead and practice on the timing  LMAO
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« Reply #4 on: April 19, 2008, 10:00:59 PM »

Quote:
Sent by Ghia-X on April 19, 2008, 05:06:13 PM
A wise man once said........

I don't see the point in fitting a dump valve on your TDI. A dump valve or boost recirculation valve is fitted to release the built up boost pressure in the intake system to prevent the turbo stalling between gear changes giving you mega lag. This build up of boost pressure is created due to the throttle flap being slammed shut when you let off the throttle. There is no throttle flap on the TDi engine, they don't need one. (Don't get confused with your 'soft shut' flap fitted in the same place as the throttle body, this is only used when the engine is turned off).

Additional to this, the 115ps is fitted with a variable vane turbo so lag is at a minimum anyway.

So, even if you could plumb the DV in, you wouldn't get the lovely whoosh when changing gear.


Who said that? Grin Wink
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« Reply #5 on: August 12, 2008, 10:49:36 AM »

Quote:
Sent by Ghia-X on April 19, 2008, 05:06:13 PM
A wise man once said........

I don't see the point in fitting a dump valve on your TDI. A dump valve or boost recirculation valve is fitted to release the built up boost pressure in the intake system to prevent the turbo stalling between gear changes giving you mega lag. This build up of boost pressure is created due to the throttle flap being slammed shut when you let off the throttle. There is no throttle flap on the TDi engine, they don't need one. (Don't get confused with your 'soft shut' flap fitted in the same place as the throttle body, this is only used when the engine is turned off).

Additional to this, the 115ps is fitted with a variable vane turbo so lag is at a minimum anyway.

So, even if you could plumb the DV in, you wouldn't get the lovely whoosh when changing gear.

good advice matey. turbo stall on 115ps will be minimum too. dv is only good for big power. fitting one will only introduce a leak to the boost, vacuum system. Marcus.
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