Multiple "tunes" in one ECU?

Olit · Apr 10, 2012

Hi!

This is a question mainly for the ECU-tuners in this forum - Malone, TDTuning, Rocketchip, etc:

Is it possible to install multiple tunes in one ECU, and make them available/active thru the cars menu-system/cruice-control/etc?

I vaguely remember a tuner offering such a system on the 1,8T petrol - was it REVO? I really don't remember any more.

It would be VERY convenient, when going to MOT etc.

Regards

Olit

JSWTDI09 · Apr 10, 2012

Revo keeps the stock tune and the "tuned" tune both in the ECU and it requires a SPS (Serial Port Switch) to switch between them.

The APR tune which is currently in Beta testing also has similar ability. I have not seen the TDI version, but the gasser version uses the cruise control switches to switch between tunes.

I do not think that RocketChip or Malone currently has this capability, but that could change.

Have Fun!

Don

hooville · Apr 10, 2012

I'm not familiar with the AZH engine, but Rocketchip has the capability to have multiple tunes for the ALH engine: I currently have a combo of RC2 & 3 that is changed via vag-com. If I tell the ECU I have a manual transmission, it loads RC3, if I change it to automatic it loads RC2.

BlownBusa · Apr 10, 2012

I can change mine with vag com via soft code...

faboka · Apr 11, 2012

The edc15p ecu can have up to 3 data blocks depending on car/software/hardware version. This is for manual, auto, 4x4 etc.

My fabia has 2. So I can use vcds to change the software code to point to a different block.

m1ketdi · Apr 11, 2012

If you are being really adventurous you copy the manual coding across all of the different data banks. Even run software from another car... And then you can have 3 different sets of mapping within your ecu and have no troubles.

Although it's a bit of effort having to use vcds to swith it. It would be nice to have some kind of cruise control button press method to swap between codings....

NHgranite · Apr 11, 2012

...so what is the logic in having multiple 'tunes' loaded on the ECU?

One for the wife/valet and one for my use? testing/experimentation?

oilhammer · Apr 11, 2012

NHgranite said:
...so what is the logic in having multiple 'tunes' loaded on the ECU?

One for the wife/valet and one for my use? testing/experimentation?

Or for OBD testing, or for a winter mode, or.... many reasons. My 1998 Jetta was almost impossible to drive in the snow with the mods I had done. And taking the ECU out of the cowl and swapping the PROMs inside was a PITA, but that is what I had to do.

I agree a switch via the cruise control button(s) or similar would be a very nifty feature.

bobabbey · Apr 11, 2012

I have a 05 Passatt with BHW 2.0 TDI.
It has a Rocketchip modification I think RC2.
It won't clear EGR sensor for NYS inspection.
The MAF static setting is at 850, factory is 250. That threshhold seems to be defeating the EGR function enough so it wont clear.
How do I get in to change the MAF setting with the VCDS?
It asks for a passcode. Who can share the passcode with me?
Thanks,
Bob

faboka · Apr 11, 2012

m1ketdi said:
If you are being really adventurous you copy the manual coding across all of the different data banks.

That's what I've done.

FrankenAudi · Dec 30, 2018

Any updates or ideas ,i don't want to go to a tuner to change it back and forth from winter tune to summer ,The tuner is Doman8 , it looks like getting 2nd ECU that matches original ECU .

[486] · Dec 31, 2018

google "edc15 multimap"
you switch maps by fiddling with the cruise control button and the clutch pedal

Zak3 · Dec 31, 2018

Here’s a how to in French for edc15 multimap.

http://www.geott.fr/autour-de-ledc15p/double-carto/

FrankenAudi · Dec 31, 2018

Zak3 said:
Here’s a how to in French for edc15 multimap.

http://www.geott.fr/autour-de-ledc15p/double-carto/

Thanks ,Its a good thing i took electronics and Digital ,, How hard can computers be Right!! Its all Ones and Zeros

FRtdilover · Dec 31, 2018

Search "multimap edc15" in youtube. We're few guys having this, it's a ECU flash using the 3 softcoding of your ECU.
When pushing clutch pedal + "set" button of cruise control, the ecu switchs from map 1 to 2, then 3 and so on. The auto gearbox line of the fis/mfa screen is enabled and show you which map you're using. (It's not written PRND but 12345 and just 123 are used because of the 3 differents softcodings)

keaton · Jan 1, 2019

back when i was doing stuff on OBD 1 BMWs nd we wanted multi tunes we got larger EEPROMs and tied the MSB of the address to a switch

https://www.bimmerforums.com/forum/...-OBD1-(413)-Dual-Tune-DIY&highlight=dual tune

this person rehosted my images and copied my post

https://www.bimmerforums.com/forum/showthread.php?1457871-Found-this

Not sure which flash chip is being used by these ECUs but might be possible to do the the same thing.

FrankenAudi · Jan 1, 2019

Thks keaton ,yes 2 earlier post has similar idea just different EEprom Chips ,, i will need steady hands ,Third hand Magnify glass , good soldering . Thks for info guys.

keaton · Jan 1, 2019

FrankenAudi said:
Thks keaton ,yes 2 earlier post has similar idea just different EEprom Chips ,, i will need steady hands ,Third hand Magnify glass , good soldering . Thks for info guys.

these ECUs use FLASH chips. flash an EEPROMs are not the same thing. there is also different types of flash that use different addressing schemes.

FrankenAudi · Jan 1, 2019

Thanks for tips,, i haven't fully read thru any of the detailed posts , but good info ! Many Thks.

[486] · Jan 1, 2019

Zak3 said:
Here’s a how to in French for edc15 multimap.

http://www.geott.fr/autour-de-ledc15p/double-carto/

nope, this is done all in software, look for it on ecuconnections

Zak3 · Jan 4, 2019

[486] said:
nope, this is done all in software, look for it on ecuconnections

Thanks [486]

Rob Mayercik · Jan 4, 2019

FRtdilover said:
Search "multimap edc15" in youtube. We're few guys having this, it's a ECU flash using the 3 softcoding of your ECU.
When pushing clutch pedal + "set" button of cruise control, the ecu switchs from map 1 to 2, then 3 and so on. The auto gearbox line of the fis/mfa screen is enabled and show you which map you're using. (It's not written PRND but 12345 and just 123 are used because of the 3 differents softcodings)

Ok, so how would this work on an automatic-equipped car that doesn't have a clutch? Rig up a button wired to the clutch switch wires or something?

jsrmonster · Jan 4, 2019

You can use 2mg eprom chip and cut a trace and add switch to access hi or lo memory. simply write both tunes together in one file. key off to switch or it can corrupt eeprom during hot switching. did this 15 yrs ago. I also made several versions of daughter board that allows hot switching on the fly. Made 6 tunes in one ecu. Don't know why anyone needs this. Don't ask me how I don't want bothered with this, one good tune is all you need. I posted many times about this how-to, and only useful when cheating in competition. Flip heater switch for different tunes, or seatbelt off is stock for tech insp or dyno, and seatbelt on gives max tune for race time.

Jeff ;-))

turbobrick240 · Jan 4, 2019

I love the 6 switchable tunes on my truck. The high idle tune is great, and the stock tune is good if someone wants to borrow it. The tow tune probably gets the most use.

FrankenAudi · Jan 4, 2019

turbobrick240 said:
I love the 6 switchable tunes on my truck. The high idle tune is great, and the stock tune is good if someone wants to borrow it. The tow tune probably gets the most use.

I really Need a Road Rage tune with auto detect engine Governor !Loonie tunes that piss me off .

FRtdilover · Jan 9, 2019

Rob Mayercik said:
Ok, so how would this work on an automatic-equipped car that doesn't have a clutch? Rig up a button wired to the clutch switch wires or something?

I asked my tuners. They didn't develop it for auto gearbox (mk4 automatic are pretty uncommon here) but it "could be" possible with the kick down. not sure sorry

nihalot · May 2, 2019

Accelerator plus brake pedal combination is one obvious one for Auto transmissions

Multiple "tunes" in one ECU?

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