Just the error or do they cause the engine to hold back as well due to unknown exhaust valve position ?Yup thread here
Exhaust blanking plugs
Exhaust blanking plugs
I tried the ones I had today Put the car into performance mode then switched off Waited for 15 min like on 8V. Unplugged them all. Video of after https://youtube.com/shorts/qzEVY0k29tE?feature=share However……. Faults are logged, not visible in OBD11 either. Visible in VCDS...r.tapatalk.com
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Just the error or do they cause the engine to hold back as well due to unknown exhaust valve position ?
And can the error be reset once the delete plugs are in place? (assuming that the error occurs between unplugging valves and plugging in the blanking plugs)
Thanks for that, I would like the valves open all the time but do not want an error within the ecu, manufacturers seem to get cleverer with ecu's.VCDS cleared it, but it returned straight after, now could be 2 reasons.
1) the system was still ‘live’
2) Audi have changed something in the way the valves are wired on the 8Y as on the 8V you could unplug them, put the delete plugs in and then clear any faults with no issues, on the 8Y the errors came back even with the plugs in.
The only thing that cleared the errors is Odis S
I’ve literally just ordered the ASR CB2 controller…..
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Thanks for that, I would like the valves open all the time but do not want an error within the ecu, manufacturers seem to get cleverer with ecu's.
Aprilia Motorcycle has a butterfly valve with cables, people just take the cables off and leave the motor operating so Aprilia programmed the ecu to recognise the travel of the motor, it then throws the error code
E-Bay seller now says they're OK for 8Y without any codes being logged?
It’s why I went down the Control via module route.
No errors and is hidden away.
In German but he has a test device showing the state of valves in different modes which was interesting.
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Got one recently, the RX2 I think, and returned after a week because after a correct installation the valve's motor seemed to not work properly.
They were very kind with me and offered a swap with a new unit and an extended trial period, but the solution hasn't convinced me.
This was the valve's behaviour during one of various tries, the video is also useful for understand the tone variation between open and closed valve
In addiction to this, you'll have to remove the battery to get the job done and this simple act will thrown in a bunch of errors in various ECUs. I tried to clear those out with OBD11, but some of them (engine, can bus and another one) are still there.
So, considering the price and benefits, I'd prefer spend way less and stay with valve always open until a proper ECU remap will bring full control on these.
That said, I really hope your experience will be better than mine!
Just to confirm, the inital blankers on here that we put our names down for will put up an error and the only way to clear it is with odis?
Little update from the seller, he will offer a 5% discount to everyone watching the item.
I’ve also asked confirmation about the possibility to avoid errors in the ecu, wainting for feedback..
Update from the seller, modules are the exact same of 8V, so will happen exactly what @8YARWY previously explained
Thanks!Hmmm ok.
Let me fit them again with the battery disconnected and I’ll report back.
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Thanks!
In my experience with the installation of the ASR module, the simple battery disconnection caused several errors in different ECUs. All of those were reported as “occasional” and with obd11 I managed to clear the majority of them except the ones on Engine, Can Bus and something else.
Of course obd11 couldn’t be the perfect solution as you suggested, but the question is: maybe there is something to do before effectively detach the negative from the battery to avoid those errors?
Thanks!
In my experience with the installation of the ASR module, the simple battery disconnection caused several errors in different ECUs. All of those were reported as “occasional” and with obd11 I managed to clear the majority of them except the ones on Engine, Can Bus and something else.
Of course obd11 couldn’t be the perfect solution as you suggested, but the question is: maybe there is something to do before effectively detach the negative from the battery to avoid those errors?
I will send him pm as i got set of the waySomeone’s needing to tell this chap on eBay that he’s charging 40 sheets for a blanking plug then
I will send him pm as i got set of the way
Having seen your other posting of pictures of your convo with the seller, how does he propose you fit the blanking plugs to the car before it shuts the valve and powers down the ECU ?
It’s irrelevant anyway as the battery is disconnected after putting the car in performance mode, so it cannot detect the change, what it does detect when it’s powered up is an operational fault, which generates those errors in the 8Y.
He says his modules are 8V / 8Y same ? I can’t see it because the blanking plugs I’ve used are 4 pin FL 8V ones, unless his are modified to suit the 8Y……
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I must mess up sorry was thinking it was removedHaving seen your other posting of pictures of your convo with the seller, how does he propose you fit the blanking plugs to the car before it shuts the valve and powers down the ECU ?
It’s irrelevant anyway as the battery is disconnected after putting the car in performance mode, so it cannot detect the change, what it does detect when it’s powered up is an operational fault, which generates those errors in the 8Y.
He says his modules are 8V / 8Y same ? I can’t see it because the blanking plugs I’ve used are 4 pin FL 8V ones, unless his are modified to suit the 8Y……
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^ Do we know if the exhaust valve motor is the same between 8V and 8Y?
Thanks for all your testing!Either it’s slightly different in that the motor is capable of variable movement or it’s wiring logic has changed.
What I did see yesterday after unplugging the valves a third time (after the 2nd time with battery earth off) is the top 2 errors (yellow line in the picture) appeared 1st.
The 3rd / 4th errors only appeared when the car was driven, so IMO they are from the ECU not being able to vary flap movement on the move, which with a blanking plug I don’t see how you can overcome.
There has to be a pull back of power in this scenario because this ECU won’t know what’s going on with the flaps, so can’t risk full power at high revs for risk of engine damage relating to back pressure in the system.
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I've run with my valves unplugged for most of march and all of April and I haven't noticed any issues at all. There is certainly no shortage of power 'to the naked eye' as such. Whether a dyno would say different or not remains to be seen. In any event, there are no errors and certainly to feel, no lack of power.Thanks @
Thanks for all your testing!
I can remember that during one of the various 8Y’s press presentation, Audi said that the exhaust sound was “improved” from last gen thanks to variable valve control. So everything relating the errors makes sense and the use of blanking plugs doesn’t!
The real problem is in your last sentence, if this damned ECU detect those errors as risky for the engine, then we’ll have many troubles
I can’t remember if there’s someone else who has ran without valves for a while now to understand if our concern is real.
I've had them in for about a month and again had no drop in power. Haven't had it on a dyno but out of the launches I've done I had the best time with the plugs fitted. If it's pulling power it is minimal.
It’s definitely not pulling that much power on the 8Y, that would be noticeable.When we had the 8V on the Dyno it pulls power 5k upwards.
Here’s the graph….. see the red line how it drops away after 5K
Blue line is with valves plugged back in
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^ Do we know if the exhaust valve motor is the same between 8V and 8Y?
To fool the ecu into thinking the valves are still there the 'blanking plugs' need to return the same feedback signal to the ecu as the exhaust valves do, one option might be to remove the electric positioner and lock wire the valves open? Of course this could enable the valves to move further than in normal operation and again throw an error message:2017 cars end in B
2023 cars end in D
So same main part number but different revision letter.
Other tweaks to the ECU software could be the difference here though.
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And I also wonder if the exhaust valve sensor/switch and ecu feedback is taking inputs from other sensors as well? maybe the OPF pressure and temperature sensors re-act to a permanently open exhaust valve?
I've had them in for about a month and again had no drop in power. Haven't had it on a dyno but out of the launches I've done I had the best time with the plugs fitted. If it's pulling power it is minimal.
It’s definitely not pulling that much power on the 8Y, that would be noticeable.
They can never prove it, a few random errors flagging up isn't unheard ofIt may certainly become an event though if when your car is serviced and plugged into the Audi mothership and Audi comes back with denied/cancelled Warranty due to car being altered to cheat UK/Euro emmissions ?