rs6 c5 power loss and supercharging circuit leaks

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Sun Feb 11, 2018 7:03 pm

I mean the valves where the air is injected into the exhaust stream (using the N112). They can leak and cause vacuum problems.

Yes, those are the misfire counters I mean.
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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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Sun Feb 11, 2018 7:57 pm

Image
markers 10 and 11 is it?
on a French forum people had tendencies to say that if the secondary air system was failing it did not entail a loss of power but a cause of pollution mainly

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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Sun Feb 11, 2018 9:20 pm

Yes, 10 and 11.

If the SAI combined valve fails it can leak vacuum (bad) or introduce air into the exhaust (very bad - screws up the lamda regulation). Look at Gav66's thread about power loss due to leaking SAI.

If the SAI pump fails, then it's not so serious. But that will give a code. The others won't necessarily.
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: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Sun Feb 11, 2018 9:24 pm

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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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Sun Feb 11, 2018 11:20 pm

nice for the post, in his case it was used user hoses I replaced everything in reinforced silicone I read that with the heat they are altered
Image

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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Tue Feb 13, 2018 9:20 pm

N249 received I ride it tomorrow by crossing my fingers this is his

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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Tue Feb 13, 2018 9:53 pm

That would be good. Fingers crossed.

Did you say you already changed the DVs?
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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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Tue Feb 13, 2018 10:48 pm

yes DV's are new they must be 5 or 6 months

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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Thu Feb 15, 2018 10:41 pm

little return still not better even after replacing the N249 if not a better flow of ai decelerating on the MAF,
I restarted my replacement valve N75 mac and surprise
Image
the plug to jump and more armature, reassembly of the old and logs again
it's less bad but still not his as you think the instructions and the current are not always there or staggered
Image

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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Fri Feb 16, 2018 8:15 am

So the valve broke apart?! :shock:
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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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Fri Feb 16, 2018 11:56 am

squarely like a popcorn yet it's a reinforced valve

Envoyé de mon FRD-L09 en utilisant Tapatalk


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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Wed Feb 21, 2018 7:29 pm

return to the box departure I go back the origin ca does not work too badly
I order this one I look forward to
http://www.vagdiscount.com/electrovanne ... -7090.html

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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Tue Feb 27, 2018 7:35 pm

N75 rises I redid logs I do not exceed the 1400 mbar and has 5/6000 tr the worst I desespere ...

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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Tue Feb 27, 2018 7:39 pm

It's really weird that the car is only asking for 1.4 bar. Possibly a defective ECU / MAP? What map is it running?
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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Joined: Wed Dec 31, 2008 6:24 pm

Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Tue Feb 27, 2018 7:45 pm

Interesting thread here that sounds a LOT like the problem you are having:

https://www.briskoda.net/forums/topic/3 ... -from-ecu/
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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