How can I tell what software version is in the DME?
 

I suspect I have a US DME but since I'm in europe I only have the two mid pipe cats. The DME has stored a fault relating the the O2 sensors after the cats, but there are no sensors after them.

I can connect with durametric, but I don't know exactly what to look for.

All 1998 cars carried the 5.2.2 DME.

What codes are you seeing?

I'd like to know how to check this, and if there's a list available to tell what tune is loaded. In my case, I want to check if it's for a 3.2 or a 2.7 engine.
(My car came to me with a 'spare' DME!)

So, subscribed!

When you connect the Durametric the Engine summary page has the DME software version.

What year/model is your car?

No rear O2 sensors? I wonder if that is still a stock setup?

If not, I have seen rear O2 sensor simulator circuits that emulate the signals a rear sensor would produce so that the codes go away.

Or you could install your own by welding a fitting somewhere downstream of the CAT's in the exhaust pipe.

I think the 986's only had the 2 DME versions 5.2 and 7.2 if I recall correctly. Not sure exactly when the transition took place (~2000?) but you will be able to tell from your Durametric readings what you have.

I'm sorry I've been a bit unclear. I have the sensors in front of the main cats. I don't have pre-cats in the headers, so no cats in front of the sensors. There are no sensors after the cat, but there are bungs for sensors at the rear of them.

My DME is a 5.2.

The car has been in a wreck and rebuilt, parts have been exchanged by POs so I have no information to go by. The body, and I suspect the DME and all wiring, is from a US car. I know this for a fact because I found a small fortune in dollars and a petstore membership card when I pulled the carpet :D. The drivetrain and suspension is from a Norwegian car. The Norwegian car may have had an engine swap at one stage, because I suspsect the engine is from a US car. :o

I have the software version from Durametric, but I don't know how to tell if it is US software or ROW? I don't have the printout here, but I don't remember seeing any clear information on this.

The EU version has only 2 catalysators. The o2 sensors are before the catalysators. There are no o2 sensors after the catalysators. There are no header catalysators.

http://986forum.com/forums/uploads02...1464888800.jpg

Software: can't help. Don't think Durametric shows the country version.

Regards, Markus

Thanks mate. What you're saying is the reason for me asking. Since my DME says the o2 sensors after the cat are bad, and I have none, I'm suspecting the software to be the US version. This would make sense if the DME came with the body and the engine came from the wreck.

Hello,

that sounds logical to me. The question is if the additional catalysators can be switched off in the software. If it would be a Mercedes i could tell you how to do that, but i don't have access to a Porsche PIWIS system with developer mode.

So i see two options. You have to check if you can reflash the ECU with an eupopean software version or you can check if it's possible to modify the parameters so that the cats are switched off.

Regards, Markus

Probably by easier to just install 2 post CAT sensors and be done with it, or the post CAT simulator circuits.

I thought the EU was rather strict with their car modifications, so im surprised that they would allow a pieced together version on the public roads.

They allow this under strict conditions. 2 out of 3 main components must be from the original car. It is called a body swap. This one has the suspension and engine from the original car. They parts have led seals on them that were put on prior to the body swap to ensure the parts were changed.

I was hoping I could find the sofware version no. for the us and row versions to confirm my suspision. If I'm right I'm hoping I can have it flashed with the ROW software, or find a ROW chip.

Hello,

there is no possibilty to install O2 sensors behind the catalysators in the EU version. So you have to look for a software solution.

Regards, Markus

perhaps that is why someone has welded a set of bungs at the outlet of the cats then....Oh well, just another issue...

You should be able to load the ROW tune into the ECM .It doesn,t use a different ecm only a different program within it. The ROW tune doesn,t monitor rear o2 sensors and curiously allows starting the car without the clutch depressed. I am using it in Canada to allow headers without cats or a CEL. The cats are in the midpipe so emissions still pass.

Here we go :)

I have to depress the clutch to start.

Do you have any tips on how to obtain the ROW software? I'm guessing I can use the Durametric to flash the DME?

You need an access code number from the dealer to allow programing changes . They should provide the numbers if you show ownership docs . Then you need to find a shop with the equipment to do it Durametric won,t. Pwis will I think. I had it done by an independent technician . In Europe you might be able to talk your local dealer into doing it as it,s the programming that should b running in your car there anyway. Since you don,t have cats in the headers ( like my US 2001 S does ) your car sounds like it is mechanically configured as a ROW car already.

The only source for ROW programing is the factory diagnostics system (PST II or PIWIS). The Durametric system is not capable of this.

I would have guessed I could just replace the chip like in my 951. I'll have to talk to some locals for more advice.