Location of DVs, N75, N249, etc..

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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Shoppinit
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Location of DVs, N75, N249, etc..

Post by Shoppinit » Tue Dec 08, 2009 5:58 pm

I just tried to change my N75, but as usual, once I'd got everything apart it turns out I didn't have the right part.

The part numbers are very easy to confuse, and what I thought was the N75 was the N249 and the what I thought was the N249 was the EGR recirc valve (I think!). Anyway, I'll have to order the N75 again (properly this time). I took a couple of photos to help others avoid my mistake:

Image

Image
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Shoppinit
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RE: Location of DVs, N75, N249, etc..

Post by Shoppinit » Tue Dec 08, 2009 6:13 pm

By the way, if anyone spots a mistake then let me know. The vacuum system is hardly the most intuitive bit of kit on the car. "Oil refinery" comes to mind...
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Golffather
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RE: Location of DVs, N75, N249, etc..

Post by Golffather » Tue Dec 08, 2009 6:20 pm

very useful mate......

"The part numbers are very easy to confuse, and what I thought was the N75 was the N249 and the what I thought was the N249 was the EGR recirc valve (I think!). Anyway, I'll have to order the N75 again (properly this time). I took a couple of photos to help others avoid my mistake:"

........and what should be an intake is actually a blue sock, this is getting really confusing ;) :)
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Shoppinit
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Re: RE: Location of DVs, N75, N249, etc..

Post by Shoppinit » Tue Dec 08, 2009 6:23 pm

Golffather wrote:........and what should be an intake is actually a blue sock, this is getting really confusing ;) :)
LOL
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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RE: Re: RE: Location of DVs, N75, N249, etc..

Post by Shoppinit » Thu Dec 10, 2009 6:26 pm

It seems that the RS6 doesn't have EGR?! So what does the valve I changed do? Can anyone put a name to it?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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gorwanvfr
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Re: RE: Re: RE: Location of DVs, N75, N249, etc..

Post by gorwanvfr » Fri Dec 11, 2009 7:28 am

Shoppinit wrote:It seems that the RS6 doesn't have EGR?! So what does the valve I changed do? Can anyone put a name to it?
Secondary air injection 8)
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jd_hants
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RE: Re: RE: Re: RE: Location of DVs, N75, N249, etc..

Post by jd_hants » Fri Dec 11, 2009 9:21 am

How come you are changing that? Have you got faults or are you experiencing some abnormal symptoms?
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RE: Re: RE: Re: RE: Location of DVs, N75, N249, etc..

Post by Shoppinit » Fri Dec 11, 2009 10:26 am

When I suspected I had power issues, I decided to change the DVs, N249 and N75 to eliminate them as causes. And thanks to a screw up with part numbers I ended up with that part instead of the N75.
gorwanvfr wrote: Secondary air injection 8)
That could make sense. It looks like it might be the N112. Although it doesn't seel tio go anywhere near the secondary air pump. I'll modify the image.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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RE: Re: RE: Re: RE: Location of DVs, N75, N249, etc..

Post by Shoppinit » Fri Dec 11, 2009 10:36 am

Image
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Re: RE: Re: RE: Re: RE: Location of DVs, N75, N249, etc..

Post by MoRS6+ » Fri Dec 11, 2009 1:55 pm

Shoppinit wrote:When I suspected I had power issues, I decided to change the DVs, N249 and N75 to eliminate them as causes.
Did you notice a difference afterwards?

Hang on, scrub that - wasn't that the thread 'Oh no, car feels slow'? Didn't you say it was the same - can't remember..
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Shoppinit
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RE: Re: RE: Re: RE: Re: RE: Location of DVs, N75, N249, etc.

Post by Shoppinit » Fri Dec 11, 2009 6:14 pm

Yup, that's the thread. The car feels more responsible, but I'm 99.99% sure that this is due to colder weather and my head.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Re: RE: Re: RE: Re: RE: Re: RE: Location of DVs, N75, N249,

Post by MoRS6+ » Fri Dec 11, 2009 6:20 pm

Shoppinit wrote:Yup, that's the thread. The car feels more responsible, but I'm 99.99% sure that this is due to colder weather and my head.
Ah yes, but do you feel a more responsible driver now you've changed them? :lol:
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Golffather
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Re: RE: Re: RE: Re: RE: Re: RE: Location of DVs, N75, N249,

Post by Golffather » Fri Dec 11, 2009 6:20 pm

Shoppinit wrote:Yup, that's the thread. The car feels more responsible, but I'm 99.99% sure that this is due to colder weather and my head.
More "responsible" or more "responsive" ?!
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RE: Re: RE: Re: RE: Re: RE: Re: RE: Location of DVs, N75, N2

Post by Shoppinit » Fri Dec 11, 2009 6:29 pm

Got to stop that lunchtime drinking!
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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Post by RS4XS » Fri Dec 11, 2009 6:34 pm

Thanks for the info though, :thumbs:
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