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 » Tue Feb 27, 2018 7:50 pm

Obviously the turbos on the RS6 don't have variable geometry, but what is interesting is that the ECU is asking for less pressure for no apparent reason and no sensor reporting a problem.
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 » Tue Feb 27, 2018 7:54 pm

Might be worth replacing the charge pressure sensor, but I would expect it to throw a fault if you were over-boosting.

Perhaps log the EGT values? Coolant temp, too. I'm struggling to think of what would cause the car to ask for less pressure that wouldn't also throw a fault code.
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 27, 2018 7:56 pm

it has to work remapping that's why it's weird,
it is a preparator 500cv 650/660 nm he did not charge either

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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Tue Feb 27, 2018 7:58 pm

my coolant sensor is new it was 1/2 defective, for egt what channel?
I will try to put back the DV of origin by acquired conscience I buy it on ebay possible that it is badly tarte or defaillante

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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Wed Feb 28, 2018 10:00 pm

I go back the original DV the new was much harder and was squarely blocked which explains the gap MAF but still no pressure sensor G31 may generate a kind of breakdown?

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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Sat Mar 03, 2018 7:20 pm

by making logs last night I found something weird on the channel 117 4th accelerator window at bottom I that 1320mbar of specified boost has stopped well ??
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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Sat Mar 03, 2018 7:24 pm

That's with the engine stopped?
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 » Sat Mar 03, 2018 11:02 pm

Yes engine stopped it's normaly?

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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Sat Mar 03, 2018 11:32 pm

That's baffling. Why would it ask for boost with the engine off?!

I think there might be something wrong with your map. Can you put it back to standard to see if it improves?
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 Mar 04, 2018 1:04 am

it is the boost specified not the current so possible that it is asked by pressing the pedal fully even when stopped, about that which determines the boost specified cartography, calculator, sensor or other? for mapping I recontact the preparer to have the original file and reset it to compare

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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Sun Mar 04, 2018 10:27 am

I must admit that I've never tried it on mine. Maybe it's normal. I will try it when I can, but won't be able to for a couple of weeks. Anyone else want to give it a try? (engine off, press accelerator pedal fully to see what requested boost is.)

Let's see what happens when you put the map back to standard.
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 Mar 04, 2018 1:48 pm

I will see with a friend who has one to do the same test, yes original I will compare

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Shoppinit
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by Shoppinit » Fri Mar 16, 2018 11:02 am

Any progress?
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 » Thu Apr 26, 2018 2:20 pm

Hi everyone I did not have too much free time I'm going to seriously attack the engine after 6/05

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djbilbao
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Re: rs6 c5 power loss and supercharging circuit leaks

Post by djbilbao » Sat May 12, 2018 8:57 pm

hi with the ferie may I enjoy to get out the monster chassis not too bad output
Image

Image
the leaks come from the rocker cover joints and missing screws on the bottom motor probably loose because of the vibrations I will take the opportunity to make the cleanliness and change the maximum seal and aac tensioner pad

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