Dump valve for a diesel?

1. GTI_Lee Established Member Joined: Jun 2006 Wales Posts: 1486 1)2002 Saxo VTR 2)2003 106 GTI

   #1 25th February 2007, 21:39

   Hey people! Dont know wether this is in the right section, So i apolagise if it isn't! Im gonna go for a diesel for my next car! Thinkin of the Golf GT TDI 150bhp model. Just wanted to know if you can get a dump valve for a diesel car and if they sound good? Thanks in advance, Lee.
2. Mikey Saxperience Addict Joined: Nov 2006 Blackburn Posts: 12035 GTI/VTS/VXR/S-line

   #2 25th February 2007, 21:40

   yep a turbo is a turbo pal!!!
   
   they will work
3. Sean Saxperience Post Whore Joined: Feb 2005 St Andrews United Kingdom (Scotland) Posts: 7384 Green mk1 vtr/s and Focus zetec

   #3 25th February 2007, 21:48

   no they won't^^^^.diesels dont have conventional throttles, so there's no rapid increase in pressure when lifting off the throttle which the dump valve is there to release. you can get fake electronic dump valves for diesels which work off the ecu but to be honest they're wank.
4. GTI_Lee Established Member Joined: Jun 2006 Wales Posts: 1486 1)2002 Saxo VTR 2)2003 106 GTI

   #4 25th February 2007, 21:49

   Cool! Then looks like i'll be getting one when the Vee Dub arrives!
5. Sean Saxperience Post Whore Joined: Feb 2005 St Andrews United Kingdom (Scotland) Posts: 7384 Green mk1 vtr/s and Focus zetec

   #5 25th February 2007, 21:52

   Quote:

   Originally Posted by Squills_Saxo Cool! Then looks like i'll be getting one when the Vee Dub arrives!

   
   erm why?
6. GTI_Lee Established Member Joined: Jun 2006 Wales Posts: 1486 1)2002 Saxo VTR 2)2003 106 GTI

   #6 25th February 2007, 21:52

   erm why not!
7. Sean Saxperience Post Whore Joined: Feb 2005 St Andrews United Kingdom (Scotland) Posts: 7384 Green mk1 vtr/s and Focus zetec

   #7 25th February 2007, 21:55

   because it will do the square root of fuck all, read above (not the rubbish about a turbo being a turbo)
8. stevenet15 Saxperience Forum Bum Joined: Jun 2006 aylesbury buckinghamshire Posts: 4822 Astra Turbo, saxo vts, punto turbo

   #8 25th February 2007, 22:01

   you can put a dump valve on some deisels, as sean said there electronicly controled but are real dump valves not a speaker. wont give u any performace gain
   
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   in car
   
   
   http://cgi.ebay.co.uk/The-Derv-Docto...QQcmdZViewItem
9. Sean Saxperience Post Whore Joined: Feb 2005 St Andrews United Kingdom (Scotland) Posts: 7384 Green mk1 vtr/s and Focus zetec

   #9 25th February 2007, 22:02

   aye that's the one i'm talking about, it's connected to the ecu so it doesn't have the same use as a petrol model dump valve nor does it work of throttle vacuum but it makes the same gay noise
10. stevenet15 Saxperience Forum Bum Joined: Jun 2006 aylesbury buckinghamshire Posts: 4822 Astra Turbo, saxo vts, punto turbo

    #10 25th February 2007, 22:06

    yeah on petrol cars the dump valve/recirc valve is designed to remove the air pressure in the inlet manifold/intercooler when the throttle body is closed and stop the turbo stalling
11. stevenet15 Saxperience Forum Bum Joined: Jun 2006 aylesbury buckinghamshire Posts: 4822 Astra Turbo, saxo vts, punto turbo

    #11 25th February 2007, 22:07

    and it works from using the differences in pressures to trigger the dump valve to open
12. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

    #12 25th February 2007, 22:20

    Squills, as I understood it, the 150hp model didnt fair well in reviews. basically its the same engine as the 130hp model except with a bigger turbo. And the turbo suffered from the typical inertia probs of big turbos as a result the 130hp model was favoured.
13. Richardson_VTS Established Member Joined: Mar 2006 Northallerton Posts: 1672 Mini Cooper S

    #13 25th February 2007, 22:46

    I had a Golf Plus loan car, GT TDi 140bhp , And that was crazy, it had traction control and still wheel spun to third gear!!
    
    Was thinking of going diesel on my next automobile!
14. stevenet15 Saxperience Forum Bum Joined: Jun 2006 aylesbury buckinghamshire Posts: 4822 Astra Turbo, saxo vts, punto turbo

    #14 25th February 2007, 23:03

    yeah them new gold TD's are well quick, i had one for work aswell
15. GTI_Lee Established Member Joined: Jun 2006 Wales Posts: 1486 1)2002 Saxo VTR 2)2003 106 GTI

    #15 25th February 2007, 23:24

    Thing is, if i get mine im gonna get it chipped to 205 bhp!
16. Richardson_VTS Established Member Joined: Mar 2006 Northallerton Posts: 1672 Mini Cooper S

    #16 25th February 2007, 23:30

    55bhp from chipping? Only thought you got about an extra 30bhp?
17. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

    #17 25th February 2007, 23:38

    Quote:

    Originally Posted by Richardson_VTS 55bhp from chipping? Only thought you got about an extra 30bhp?

    A decent superchip setup with a roaded remap gives around 30% more power and 40% more torque.
    I would have said nearer 195bhp.
18. Richardson_VTS Established Member Joined: Mar 2006 Northallerton Posts: 1672 Mini Cooper S

    #18 25th February 2007, 23:41

    Golf plus GT TDi coming my way!!!
19. mallboy Saxperience Forum Bum Joined: Dec 2005 Wolverhampton Posts: 3000 MK1 VTR TURBO

    #19 26th February 2007, 00:04

    actually, my brother has got a dump valve on his tdi passat and it sounds wicked.very loud and is also a real dump valve - better than any petrol turbo car ive heard. but the best place to get one from is derv doctors in derby i think. he got one fitted with a switch so you can turn it off/on when he wants, its good if you want it for the noise!!!!!
20. mallboy Saxperience Forum Bum Joined: Dec 2005 Wolverhampton Posts: 3000 MK1 VTR TURBO

    #20 26th February 2007, 00:07

    i forgot to mention: derv doctors also do remaps. the remaps on tdis are awesome. bhp increases are good but its the torque thats mental on the remaps. my mate had a remap done and it was a stupidly fast car.its all about tdi`s nowdays!!!!!!!
21. riggsy Saxperience Post Whore Joined: Jan 2006 West Sussex Posts: 6280 Mk2 Saxo Vts

    #21 26th February 2007, 01:11

    Yeah i had one on my peugeot 306 turbo diesel, it sounded awesome!
    
    But you wont get any gains!