Removing CEL via OBD Tune

[M6Bower]

About to install Gintani micro catted DP on my 2013 M6 and want to remove the CEL when it shows up. Alex can't code because the dealer installed the latest software. Any other OBD tuners out there who can help?

Shipping the ECU is not an option.

[13M5F10]

Originally Posted by M6Bower

About to install Gintani micro catted DP on my 2013 M6 and want to remove the CEL when it shows up. Alex can't code because the dealer installed the latest software. Any other OBD tuners out there who can help?

Shipping the ECU is not an option.

I am interested too. I'm flashed to the latest software and they couldn't locate the option.

m6beast help!! ;-)

[MCarsFan]

Have to benchflash.. That's the way..

[FSociety]

My tuner EnzoPerformance is able to code CEL off with Flash Tune.
But as MCarsFan said it has to be bench flash first but the updates, re-flash etc are done thru OBD2.

[A Frankfurt]

Originally Posted by M6Bower

About to install Gintani micro catted DP on my 2013 M6 and want to remove the CEL when it shows up. Alex can't code because the dealer installed the latest software. Any other OBD tuners out there who can help?

Shipping the ECU is not an option.

All ECU's need to be bench flashed first.
.
But, BMS just released their JB4 option now. That will have CEL delete feature as well as you get all the usual JB4 features

[13M5F10]

Originally Posted by Autohaus Frankfurt

All ECU's need to be bench flashed first.
.
But, BMS just released their JB4 option now. That will have CEL delete feature as well as you get all the usual JB4 features

Correct me if I am wrong but the JB4 CEL delete actually deletes all CELs so you will not see a CEL from anything hence why BMS recommends reading codes occasionally. This will not pass OBDII emissions since the ECU is really not in ready state.

A flash actually disables the codes related only to the catalytic converter so that the ECU no longer is looking for it. This allows for emissions to pass since the ECU is in ready state.

That's how I understood it.

[A Frankfurt]

Originally Posted by 13M5F10

Correct me if I am wrong but the JB4 CEL delete actually deletes all CELs so you will not see a CEL from anything hence why BMS recommends reading codes occasionally. This will not pass OBDII emissions since the ECU is really not in ready state.

A flash actually disables the codes related only to the catalytic converter so that the ECU no longer is looking for it. This allows for emissions to pass since the ECU is in ready state.

That's how I understood it.

What it does is take the catalytic convertor and oxygen sensor out of loop so the DME (Engine Control Module) never runs its monitor test.
This is same for both flash tunes and piggy back systems.
You still will have a CEL if you have a bad ignition coil, EVAP issues, etc.

You will not however pass emission testing.
Even with a flash tune you will fail.
You will have to flash the DME back to stock and re-install the emission items.
Same with piggy back. You will have to remove harness and re-install the emission item.

[MCarsFan]

Originally Posted by Autohaus Frankfurt

What it does is take the catalytic convertor and oxygen sensor out of loop so the DME (Engine Control Module) never runs its monitor test.
This is same for both flash tunes and piggy back systems.
You still will have a CEL if you have a bad ignition coil, EVAP issues, etc.

You will not however pass emission testing.
Even with a flash tune you will fail.
You will have to flash the DME back to stock and re-install the emission items.
Same with piggy back. You will have to remove harness and re-install the emission item.

Not in Texas

[13M5F10]

Originally Posted by Autohaus Frankfurt

What it does is take the catalytic convertor and oxygen sensor out of loop so the DME (Engine Control Module) never runs its monitor test.
This is same for both flash tunes and piggy back systems.
You still will have a CEL if you have a bad ignition coil, EVAP issues, etc.

You will not however pass emission testing.
Even with a flash tune you will fail.
You will have to flash the DME back to stock and re-install the emission items.
Same with piggy back. You will have to remove harness and re-install the emission item.

Yeah not an issue in TX. With the bench flash cel delete the car is in ready state since it's taken out of the loop. Passes emissions. Hasn't been an issue on my cars.

JB4 fails from what I've seen since it's just disabling the CEL from displaying on the dash but in reality the CEL is still present in the DME/ECU ther for its not in a ready state and fails emissions.

I'm not talking about visual inspections and maybe Texas is diff but as long as it's in ready state it will pass if no other issues are present.

[M6Bower]

Originally Posted by Autohaus Frankfurt

All ECU's need to be bench flashed first.
.
But, BMS just released their JB4 option now. That will have CEL delete feature as well as you get all the usual JB4 features

Now we're talkin! Gonna check this out for sure. Thanks a lot

[dmetuning]

Originally Posted by M6Bower

About to install Gintani micro catted DP on my 2013 M6 and want to remove the CEL when it shows up. Alex can't code because the dealer installed the latest software. Any other OBD tuners out there who can help?

Shipping the ECU is not an option.

Do Not Install the Micro Cats. They will cause more issues than they are worth. I had the micro cats and the issues becomes that they keep coming up with a code "delayed response" since the oxygen sensors are so far out of the actual exhaust stream. I couldn't even tune the code out so I ended up just removing them and everything was perfect.

[M6Bower]

Originally Posted by middly

Do Not Install the Micro Cats. They will cause more issues than they are worth. I had the micro cats and the issues becomes that they keep coming up with a code "delayed response" since the oxygen sensors are so far out of the actual exhaust stream. I couldn't even tune the code out so I ended up just removing them and everything was perfect.

They're already installed and I am getting that code. I thought this code comes up for everyone who installs catless downpipes..

In any case.. With the JB4 tune, will this code go away?

[A Frankfurt]

Originally Posted by 13M5F10

Yeah not an issue in TX. With the bench flash cel delete the car is in ready state since it's taken out of the loop. Passes emissions. Hasn't been an issue on my cars.

JB4 fails from what I've seen since it's just disabling the CEL from displaying on the dash but in reality the CEL is still present in the DME/ECU ther for its not in a ready state and fails emissions.

I'm not talking about visual inspections and maybe Texas is diff but as long as it's in ready state it will pass if no other issues are present.

I may be wrong but maybe the emission laws are different as to what has to be seen. Maybe your state only looks for no current fault codes and no check engine light ? But the programming should to be the same regardless of what state it is in.
When you connect a diagnostic to your vehicle and look at the emission readiness; the catalytic convertor and oxygen sensor should be read as : Not ready.

If not and it shows ready well, that is pretty cool but I have not seen that. Even using Benz, Porsche, BMW software coding it should all be the same type of reading.

The JB4 will still show a check engine light if there is an issue, same with flash tune.
Example : I had a client with a JB4 come in for a performance issue (CEL ON) also had a ESS flash tune come in for CEL on as well. Both vehicles were F80 M3.

I'll have to look into this myself now lol
I am flash tuning a 2016 AMG Benz and I'll ask if its different in other states as I have never came across that as I am in cali.
Thanks for the information tho

[RPiM5]

This is not an issue for anyone who's registered in South Dakota either. Just sayin'.

But yeah, I think the easiest way to go nowadays if you just want to get rid of the CEL from Catless Downpipes or whatever, is to try to get the new BMS JB4 module. It's a semi-easy installation and can be removed easier before getting an emissions inspection.

If you were lucky enough, like I was, to get the original BMS CEL CAN Delete Tool, that thing is straight up plug and play, but since BMS doesn't make them anymore the JB4 is the best way to go. With both the JB4 and the CEL CAN Delete Tool, you will get CEL's related to normal engine malfunctions.

Either way, catless downpipes are awesome and the only real way to enjoy these cars as a real M car. This is just my opinion.

[A Frankfurt]

Originally Posted by RPiM5

This is not an issue for anyone who's registered in South Dakota either. Just sayin'.

But yeah, I think the easiest way to go nowadays if you just want to get rid of the CEL from Catless Downpipes or whatever, is to try to get the new BMS JB4 module. It's a semi-easy installation and can be removed easier before getting an emissions inspection.

If you were lucky enough, like I was, to get the original BMS CEL CAN Delete Tool, that thing is straight up plug and play, but since BMS doesn't make them anymore the JB4 is the best way to go. With both the JB4 and the CEL CAN Delete Tool, you will get CEL's related to normal engine malfunctions.

Either way, catless downpipes are awesome and the only real way to enjoy these cars as a real M car. This is just my opinion.

How does emission testing work in your state ?
Are there or any checks via OBD during inspections ?

FYI : Yaphet just moved up North and had the hardest time getting his M5 to pass emissions. His M was only 1-2 years away from being emission exempt too.
Saw him the other day when we came back for a cali visit

[UnfoundLegend]

Does anybody know exactly what the check engine light codes are?

I've had a full ECU tune installed approximately 12,000 miles ago which was supposed to remove the CEL and didn't. I'm still getting "o2 bank slow response- lean to rich" - replicated twice for both cats. Code "12BE08" from bmw, and general code "p013d" and "p013b".

What could this be? I'm at shop number SEVEN telling me its the tuners fault after having downpipes, wiring, o2 sensors, spark plugs, all checked.

[A Frankfurt]

Originally Posted by UnfoundLegend

Does anybody know exactly what the check engine light codes are?

I've had a full ECU tune installed approximately 12,000 miles ago which was supposed to remove the CEL and didn't. I'm still getting "o2 bank slow response- lean to rich" - replicated twice for both cats. Code "12BE08" from bmw, and general code "p013d" and "p013b".

What could this be? I'm at shop number SEVEN telling me its the tuners fault after having downpipes, wiring, o2 sensors, spark plugs, all checked.

Have you contacted the tuner ?
Most tuners I have dealt with regardless of the vehicle always want to point the finger away from their own tune. (1 tuning company bench flashed our clients computer with the wrong file.. that took some time for them to believe our diagnostic that they did the mistake) They re-flashed it correctly and all was well after that.

With the code, the supplementary information is what is important when reading oxygen sensor faults. The wave path and how it responses.
I'll look into the code on my end and see if I have any feed back for you.

[UnfoundLegend]

Originally Posted by Autohaus Frankfurt

Have you contacted the tuner ?
Most tuners I have dealt with regardless of the vehicle always want to point the finger away from their own tune. (1 tuning company bench flashed our clients computer with the wrong file.. that took some time for them to believe our diagnostic that they did the mistake) They re-flashed it correctly and all was well after that.

With the code, the supplementary information is what is important when reading oxygen sensor faults. The wave path and how it responses.
I'll look into the code on my end and see if I have any feed back for you.

Yes we've been in contact and have great customer service. They are claiming that the o2 sensors may not have been reinstalled properly after downpipe installation. I took to 7 different mechanics all of which were performance german specialists and had all wiring inspected and sensors tested. Not exactly sure where else something could have gone wrong, had even the spark plugs looked at and were near perfect.

[A Frankfurt]

Originally Posted by UnfoundLegend

Yes we've been in contact and have great customer service. They are claiming that the o2 sensors may not have been reinstalled properly after downpipe installation. I took to 7 different mechanics all of which were performance german specialists and had all wiring inspected and sensors tested. Not exactly sure where else something could have gone wrong, had even the spark plugs looked at and were near perfect.

If the oxygen sensors were replaced twice and both times OEM and not aftermarket..then the sensors cant be bad, doesn't make sense.
If you are running race fuel or a fuel to damage the sensors then that may be the only possibility aside from a pinched wire which even that would be diagnosed for ohm/resistance testing.

I would still send the ECU's to the tuner and have them re-load the software.
What tuning company is it ? I'm sure / would hope that they have tuned more then a few with the same setup as you are running.

[UnfoundLegend]

I wouldn't want to mention their name on here. But it's been recommended to me, and those who have it here and mentioned it don't seem to have the problem. The parameters upgrade itself is definitely there, the power increase is obvious within any gear as is the general smoothness and responsiveness.

Also, I have never put race fuel in the tank. Always use 93.

Are you able to find which specific codes should be the ones cleared out? The ones I mentioned are the ones I am receiving and is the reason I am getting the light.

[A Frankfurt]

Originally Posted by UnfoundLegend

I wouldn't want to mention their name on here. But it's been recommended to me, and those who have it here and mentioned it don't seem to have the problem. The parameters upgrade itself is definitely there, the power increase is obvious within any gear as is the general smoothness and responsiveness.

Also, I have never put race fuel in the tank. Always use 93.

Are you able to find which specific codes should be the ones cleared out? The ones I mentioned are the ones I am receiving and is the reason I am getting the light.

From my experience, I have not had a ecu flash generate fault codes for oxygen sensors when we have used a tune for catless downpipes. (Benz, BMW, Porsche)
Your issue is more involved and the diagnostic data is what is needed to figure out your problem. Unfortunately, just the fault code # is not enough from our end here.
The operating data is what is needed to help figure out your issues.

[TrevorM3]

if cats are removed, how would one go about getting the CEL off?

what is a "benchflash"? new to this tuning thing..