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Model specific boards => Golf mk4 => Golf mk4 TDI => Topic started by: bobreece on 18 August 2009, 00:50

Title: dumps valves??
Post by: bobreece on 18 August 2009, 00:50

does anyone have one fitted to a turbo diesel as i rad on baileys site that there is no point and they dont support tdi's?

Title: Re: dumps valves??
Post by: Rhyso on 18 August 2009, 08:38

correct

waste of time and money

Title: Re: dumps valves??
Post by: bobreece on 18 August 2009, 10:36

even if its remapped?

Title: Re: dumps valves??
Post by: Rhyso on 18 August 2009, 10:38

Quote from: bobreece on 18 August 2009, 10:36

even if its remapped?

read very carefully as i'll type this only once more

dump valves on a TDI are a COMPLETE WASTE OF TIME

What would you spend?? £200 on an R-Tech remap to make your car go faster or £200 on a useless piece of crap which makes a stupid noise and has NO PERFORMANCE BENEFITS?  :huh:

 :wink:

Title: Re: dumps valves??
Post by: bobreece on 18 August 2009, 12:46

i get what your saying its not 200 for valve its 40 and why no good on diesel and good on petrol then sorry to be stupid am new and still learning all this guys?

Title: Re: dumps valves??
Post by: Rhyso on 18 August 2009, 13:22

Quote from: bobreece on 18 August 2009, 12:46

i get what your saying its not 200 for valve its 40 and why no good on diesel and good on petrol then sorry to be stupid am new and still learning all this guys?

its the way the system works.  Diesels are electronic and vaccum controlled

not sure on the ins and outs but please do not waste your money  :smiley:

Title: Re: dumps valves??
Post by: Rhyso on 18 August 2009, 13:44

some info i found

A dump valve isn't used on a diesel because unlike a petrol engine there is no throttle butterfly. In a petrol engine when you shut the throttle the dump valve prevents excess pressure build up. The turbo diesel works by adjusting the pitch of the turbine blades.

Hope that clears things up  :smiley:

Title: Re: dumps valves??
Post by: Phil.O on 18 August 2009, 14:05

do diesels not use a special kind of dv? a recirc valve or something?

does a similar job just without the noise or am i miles out?

Title: Re: dumps valves??
Post by: Rhyso on 18 August 2009, 14:08

Quote from: Phil.O on 18 August 2009, 14:05

do diesels not use a special kind of dv? a recirc valve or something?

does a similar job just without the noise or am i miles out?

read the above ^^^^^^^

Title: Re: dumps valves??
Post by: bobreece on 18 August 2009, 16:50

so no point at all in replacing oem one as its up to the job no matter remapped or not? and no one on here with a deisel has one?
this is the last questions am asking guys thanks so far for replies

Title: Re: dumps valves??
Post by: Steve_PD on 18 August 2009, 16:57

mine makes a dumping sound without a dump valve  :smug: :lipsrsealed:

Title: Re: dumps valves??
Post by: spydoor on 18 August 2009, 17:45

Quote from: Steve_PD on 18 August 2009, 16:57

mine makes a dumping sound without a dump valve  :smug: :lipsrsealed:

You sure thats not your hoses popping off you're hearing  :wink:

Title: Re: dumps valves??
Post by: Steve_PD on 18 August 2009, 18:18

if it was it wouldnt sound like a dump valve, it would be big BANG, followed by lots of black smoke and loss of power

Title: Re: dumps valves??
Post by: Rhyso on 18 August 2009, 18:56

Quote from: bobreece on 18 August 2009, 16:50

so no point at all in replacing oem one as its up to the job no matter remapped or not? and no one on here with a deisel has one?
this is the last questions am asking guys thanks so far for replies

diesels DO NOT have a dump valve anyway!

Title: Re: dumps valves??
Post by: bobreece on 18 August 2009, 19:31

cheers guys always count on good info :smiley:

Title: Re: dumps valves??
Post by: bobreece on 27 August 2009, 17:17

1 more question on this if i have no dv on my deisel why can i hear i whistle them dump ?

Title: Re: dumps valves??
Post by: Rhyso on 27 August 2009, 19:11

Quote from: bobreece on 27 August 2009, 17:17

1 more question on this if i have no dv on my deisel why can i hear i whistle them dump ?

 :huh:

the whistle is your turbo

Title: Re: dumps valves??
Post by: Steve_PD on 27 August 2009, 20:14

when you come off the throttle you can here the boost dump

Title: Re: dumps valves??
Post by: bobreece on 27 August 2009, 20:31

yes when come off to change gear if i dont and just take foot off the whoosh/whistle noise just fades

Title: Re: dumps valves??
Post by: player.777 on 28 August 2009, 18:06

after reading this thread I am definitely going to get a dump valve. DEFINITELY!!!  :laugh: