Flap Delete from ECU on FSI
- Thread starter B4Andra
- Start date
depronman
A2OC Donor
it should be possible to produce a remap on one of the sets of code blocks in the ECU and leave the original map on the other set of code blocks
I have certainly done this on my TDI remaps
You can then use VCDS to change between code blocks by 'adapting' the ECU from 00002 to 00005 and then back to 00002. There is a rumour that there is some button / pedel / ignition combo that will change the code blocks without the need for VCDS, but I have never found it and personally I doubt that it exists, especially when you consider that the code blocks where primarily there to support maps for manual and automatic transmissions, as such why would an end user need to be able to change the maps
I have certainly done this on my TDI remaps
You can then use VCDS to change between code blocks by 'adapting' the ECU from 00002 to 00005 and then back to 00002. There is a rumour that there is some button / pedel / ignition combo that will change the code blocks without the need for VCDS, but I have never found it and personally I doubt that it exists, especially when you consider that the code blocks where primarily there to support maps for manual and automatic transmissions, as such why would an end user need to be able to change the maps
B4Andra
Member
So sorry for being dim, what are you using to re-flash?
B4Andra
Member
Would be interesting to be able to switch it off when it's annoying me and restore it on a whim.
Pinkythelabrat
A2OC Donor
What is there to stop you from having two entire ECUs with different programming going into the same wiring control loom - ‘t’d in as it were - with power only to one or the other. Then presumably you could ignition off, flick a switch to power the other ECU, then ignition on with a different map.
It seems a lot of hassle compared to plugging a laptop into the OBD socket and changing the setting on there though...
Sent from my iPad using Tapatalk
It seems a lot of hassle compared to plugging a laptop into the OBD socket and changing the setting on there though...
Sent from my iPad using Tapatalk
depronman
A2OC Donor
I suspect having a single sensor connected to two ECU would cause issues as the ECU even when not powered will have an affect on the sensor. Not to mention the complexity of paralleling all of the wires which connect to the ECU, there must be 80+ wires across the two connectorsWhat is there to stop you from having two entire ECUs with different programming going into the same wiring control loom - ‘t’d in as it were - with power only to one or the other. Then presumably you could ignition off, flick a switch to power the other ECU, then ignition on with a different map.
It seems a lot of hassle compared to plugging a laptop into the OBD socket and changing the setting on there though...
Sent from my iPad using Tapatalk
Much better to have the two maps on a single ECU and figure out how to recode the ECU from one map to the other
I am also interested in what cable and software is being used to flash the BAD engines ECU
Pinkythelabrat
A2OC Donor
Oh yes. I forgot there might be effects from connecting dead circuitry into circuits. I had a problem with an amplifier because of that.
I certainly wouldn’t have tried it anyway - can you imagine the wire spaghetti?!?
Sent from my iPhone using Tapatalk
I certainly wouldn’t have tried it anyway - can you imagine the wire spaghetti?!?
Sent from my iPhone using Tapatalk
It's really not that exciting. I have to fully reflash with Kess v2 and K-Suite.
A2Steve
A2OC Donor
I’ve been in contact with Proboost about this map. They are able to offer a mail order service for your ecu, by it does mean that you would be without your car for about a week.
They are able to send you an ecu with the immobiliser removed so that you could continue to use your car while the map is being done, but this would then mean that you are paying 2 lots of postage to Germany.
I’ve asked them to do a summary of the benefits that the map offers and will then start a thread once I have more information.
Watch this space
They are able to send you an ecu with the immobiliser removed so that you could continue to use your car while the map is being done, but this would then mean that you are paying 2 lots of postage to Germany.
I’ve asked them to do a summary of the benefits that the map offers and will then start a thread once I have more information.
Watch this space
...and the costs! - Andy
Edit. Just struck me that removing the flap function is the wrong direction, keep the stratified, homogeneous .. for the benefits it purportedly gives, and remove the flap killer the EGR . Should then be no reason for the flaps to be no more of a problem than anything else mechanical without EGR. Just wish the change from stratied was lower than 3000rpm.
Last edited:
PlasticMac
Member
The flaps are spring loaded to the default "open," state, and shouldn't move without the actuator surely?
Mac.
StefanoP
Member
Hello all,
did anyone try this chipping option? It does not touch the flap operation, it promises to extract more power from the 1.6 engine, and this is what I really would like to test.
I'm very tempted to give it a try, I presume it's a fully reversible modification....
All the best
Stefano
did anyone try this chipping option? It does not touch the flap operation, it promises to extract more power from the 1.6 engine, and this is what I really would like to test.
Centralina Aggiuntiva ChipPower CS2 per A2 1.6 FSI 2000-2005 Tuningbox Plug&Drive Adatto Chip Tuning con Presa Individuale Benzina : Amazon.it: Auto e Moto
Centralina Aggiuntiva ChipPower CS2 per A2 1.6 FSI 2000-2005 Tuningbox Plug&Drive Adatto Chip Tuning con Presa Individuale Benzina : Amazon.it: Auto e Moto
www.amazon.it
I'm very tempted to give it a try, I presume it's a fully reversible modification....
All the best
Stefano
Attachments
Edwrai
Member
I wouldn’t this will just trick the engine into pumping in more fuel or just give it incorrect readings from a sensor. Also I think it’s unlikely you would get 20% more power from a NA motor
Sent from my iPhone using Tapatalk
Kustard83
Member
There was a technical bulletin from Audi ,stating that on FSI engines ,Stratified could be turned off. This was mainly for A3 2.0lt. It states A2 and A4 keep the original concept. I did this on a number of A3s a few years ago and DONOT know if it would work on A2 . It states select engine electronics 01, select option code11 and login with10011 next enter adaption and change adaption channels 15,16,17 and change the values to 255 this will disable Stratified mode.I think a login will be required for each channel change .and obviously make a note of the original channel values first.
It works on A3 ,but might be worth a try on the A2 BAD . Fuel consumption may increase slightly.
Stratified was deleted completely from Audi FSI engines from 01/2005 after which they only run Homogeneously .
It works on A3 ,but might be worth a try on the A2 BAD . Fuel consumption may increase slightly.
Stratified was deleted completely from Audi FSI engines from 01/2005 after which they only run Homogeneously .
PlasticMac
Member
Hi, any idea what is physically changed here? In particular, do the flaps still move, or do they remain in the default open (vacum control valve inactive) position? If they do still move, and are still monitored by the ECU, what was (in A3 & A4) the logic behind disabling stratified mode?
Mac.
Mac.
Kustard83
Member
The bulletin was issued for complaints of intermittent unsteady engine operation ,harder pre ignition noise and short jolts when switching between modes.
Channel 15 homogenous lean?
Channel 16 Stratified charge outside idle speed.
Channel 17statified charge at idle speed.
The activation temperatures can be set in the individual channels.By changing the basic value to 255 the respective operating type is deactivated.
Also in measured block 7 the mode (hom/strat) can be read on a test drive. 0000 0001 indicates Hom, 0000 1000 Strat.
There is no info to say that sensors / flaps/NOX etc will no longer be used or relevant.
I suspect it may not work on the A2, but someone with a FSI and vdcs may be able to have a look and confirm.
Channel 15 homogenous lean?
Channel 16 Stratified charge outside idle speed.
Channel 17statified charge at idle speed.
The activation temperatures can be set in the individual channels.By changing the basic value to 255 the respective operating type is deactivated.
Also in measured block 7 the mode (hom/strat) can be read on a test drive. 0000 0001 indicates Hom, 0000 1000 Strat.
There is no info to say that sensors / flaps/NOX etc will no longer be used or relevant.
I suspect it may not work on the A2, but someone with a FSI and vdcs may be able to have a look and confirm.
PlasticMac
Member
Thanks for the info.
In an A2, the FSI doesn't have
"intermittent unsteady engine operation, harder pre ignition noise and short jolts when switching between modes"
So, maybe the FSI engine, in it's original form, and lower,1.6 ltr capacity, is more of a match for the lightweight A2, than the much heavier A3/4.
Since the common FSI issues are directly associated with the actual flaps (EGR residue buildup), or the actuator mechanism (vacuum valve, actuator, and potentiometer), disabling Stratified Mode, as described, would be of no advantage.
Those problems with the 2.0 ltr must have been quite serious for Audi to take this action. Wonder if a bit of that bad reputation hasn't rubbed off on the A2 FSI's?
Mac.
In an A2, the FSI doesn't have
"intermittent unsteady engine operation, harder pre ignition noise and short jolts when switching between modes"
So, maybe the FSI engine, in it's original form, and lower,1.6 ltr capacity, is more of a match for the lightweight A2, than the much heavier A3/4.
Since the common FSI issues are directly associated with the actual flaps (EGR residue buildup), or the actuator mechanism (vacuum valve, actuator, and potentiometer), disabling Stratified Mode, as described, would be of no advantage.
Those problems with the 2.0 ltr must have been quite serious for Audi to take this action. Wonder if a bit of that bad reputation hasn't rubbed off on the A2 FSI's?
Mac.
Kustard83
Member
This also did apply to 1.6 ltr A3 and all the early FSI ,A2 included had some kind of perceived odd running behavior when they were first introduced.switching to homogeneous only smoothed them out and improved running, having so little effect on consumption that Audi deleted Stratified from 2005 on and have not used it since.
I only brought this to the forums attention incase it was possible to be applied to the A2 and so help people out with FSI issues be it be with flaps or other issues as a avenue to try.
Last edited: