[badass335]

THIS WAS POSTED TO HELP FELLOW MEMBERS AND NOT BASH ANYBODY! Please keep this thread clean.

So most of you have probably read a few of my posts with this matter. I have an Auto with stage 3 mods and kept having a misfire in the high rpm's usually above the 6000rpm.

I did the usual troubleshooting; swap coil packs, replace spark plugs 3 times, replace DV's, ordered a new charge pipe, have injectors checked out etc.. AND then then un-usual as well.. taking my fully modded car into the dealership in order to resolve this. No help.

Nothing wrong found with my car. Yet, still misfires.. 99% of the time cyl 6, but a few cyl 1 and once cyl 5.

After reading a ton of posts here, i think i may have figured it out!
It is tune related but not in a bad way. After talking to a lot of owners on the forums, a hand few were having the same issues but then there were a lot of guys out there having no issues. Upon my last dealer visit, i specifically requested my diagnostic files and after double checking with some local BMW techs on the forum, found out that my car runs 29.2 progman on MSD80 DME.

I believe in my case, there seems to be a conflict with the new CANBUS maps and the older DME software on the MSD80 DME that is causing the misfires. After spending a few dollars on 3 new sets of plugs, a coil pack, a new injector and labor to calibrate it, i still had the misfires. New charge pipe (in case this was the cause) and second set of forge DV's, still misfires.

I finally bought the JB3. (will do a comparison on another post). Plugged it in and tried it. No issues. As simple as it is, it worked fine. This was more a test for my car though. I drove today, and had misfires. Pulled the Procede out, threw in JB3 running map 6 (Boosting at 15.5 - 16 ) but the big thing.. NO MISFIRES AND NO LIMP!!!

I've had procede on my car since day 1 almost 3 years ago and until now no major issues until now. The newer maps gave me a lot of issues. I believe that most guys running the new CANBUS maps need newer firmware for the MSD80 DME. 29.2 ain't working out. The service bulletin bellow better describes it. The tune just amplifies the issue.

http://www.bmwtis.com/tiscode/cgi-bi...sion=151533398

If anybody has specific questions feel free to pm me or post up but please keep it clean!

[cn555ic]

I am happy you found the answer to your problem if you think its the Procede....I have pre-29.2 and MSD80 and haven't had any issues so far....I think you might be the very few that has this problem..Before you switched out to the JB3, did you ever try to run stage 2 to see if it still made you misfire...Anyhow, I am glad your problems are fixed, if it is indeed the incompatibility of Procede to your MSD80 and 29.2 software.

[ianthegreat]

interesting, glad you got it fixed

[Mike@N54Tuning.com]

Glad the JB3 got to you quickly and the install went well, and most importantly you have a limp free ride now Looking forward to reading your review once you get more familiar with the JB3.

Mike

[scottp999]

Great information. I'm pre 29.2, but I have an MT and have never had a misfire. I guess you are saying your hunch is that this is only an AT issue.

[badass335]

Originally Posted by cn555ic

I am happy you found the answer to your problem if you think its the Procede....I have pre-29.2 and MSD80 and haven't had any issues so far....I think you might be the very few that has this problem..Before you switched out to the JB3, did you ever try to run stage 2 to see if it still made you misfire...Anyhow, I am glad your problems are fixed, if it is indeed the incompatibility of Procede to your MSD80 and 29.2 software.

Are you an auto? If I ran my car and switched before 6000rpm, it would run fine. If I let the car switch gears, it would limp.

[badass335]

Originally Posted by Mike@N54Tuning.com

Glad the JB3 got to you quickly and the install went well, and most importantly you have a limp free ride now Looking forward to reading your review once you get more familiar with the JB3.

Mike

Thanks Mike!

[badass335]

Originally Posted by scottp999

Great information. I'm pre 29.2, but I have an MT and have never had a misfire. I guess you are saying your hunch is that this is only an AT issue.

As I mentioned before, only happens when I let the car change gears in DS or D. It was a pain. I would smash my foot on the pedal and it would kick down, depending on where in the rpm range I was, it would limp!

It is more an auto thing.

[badass335]

I ran stage 2 and stage 3 and limp on both! Running default settings. I'm trying to convince my SA to get the car software upgraded. Once that happens, I'll re-test the procede and see if it resolved it.

[cn555ic]

Originally Posted by badass335

Are you an auto? If I ran my car and switched before 6000rpm, it would run fine. If I let the car switch gears, it would limp.

I am AT...never had this problem at all...I have rpms up as high as 6700 and have not experienced this ever...I am running program 27.xx and MSD80.

[badass335]

Originally Posted by cn555ic

I am AT...never had this problem at all...I have rpms up as high as 6700 and have not experienced this ever...I am running program 27.xx and MSD80.

I think the issue is on the 29.2 cars and a few progmans higher. I'll confirm this once I get my car updated. What are you running for maps? Stage? What mods are you running? I think this happens during certain conditions and when i let the car shift gears. I could run stage 1 map on defaults and not limp it. This made me think it was the car possibly. After all my dianostics, still nothing. After reading a few posts by guys getting their cars updated with software and running right, i started researching and found the above mentioned BMWTIS. It describes my car pretty well.

[cstmx_ryder]

So is that why Shiv came out with a different set of maps for 6AT only? For those who are experiencing this?

FWIW, I have 29.2 program and MSD80

[badass335]

Originally Posted by cstmx_ryder

So is that why Shiv came out with a different set of maps for 6AT only? For those who are experiencing this?

FWIW, I have 29.2 program and MSD80

Pretty much. A few of us just kept limping. I was limping running the Auto version of the map. Stage 2 and stage 3 and still.


Are you auto or manual?

[dmurray14]

Out of curiosity, did you try talking to Shiv before you went out and did all this?

[cstmx_ryder]

Originally Posted by badass335

Pretty much. A few of us just kept limping. I was limping running the Auto version of the map. Stage 2 and stage 3 and still.


Are you auto or manual?

I'm 6AT running on Stg2, Rev.I

[rismo]

Hmm interesting, I have been on 29.2 since 1,5 year and running procede @ stage 2, without these issues.

The only moments that I experienced such issues was when my hpfp started to die....

What did Shiv state about this?

[badass335]

Originally Posted by dmurray14

Out of curiosity, did you try talking to Shiv before you went out and did all this?

The first thing i did! Talk to the tuner! We did go through a few options but in his defense (Not that he needs it) its tough to troubleshoot when you are thousands of miles away.

[badass335]

Originally Posted by cstmx_ryder

I'm 6AT running on Stg2, Rev.I

Rev 1 isn't CANBUS integrated. I never had issues with the Rev 1 hardware either.

[badass335]

Originally Posted by rismo123

Hmm interesting, I have been on 29.2 since 1,5 year and running procede @ stage 2, without these issues.

The only moments that I experienced such issues was when my hpfp started to die....

What did Shiv state about this?

From what i see, you have an 2008 model. The problem is limited to MSD80. MSD81 didn't have this issue. I believe every vehicle produced after 03/08 has MSD81 hence, should not have this issue.

We went through the troubleshooting process. Try new plugs, swap coil packs on misfiring cylinders, maybe it's the injector then. Bmw tested the injectors and they say it runs fine. Possible boost leak. Found 1 and fixed but that gave me a 30FF error and thats not happening anymore. The only issue is that they do not upgrade the DME software unless they are required to so in this case, they never had a reason to. 'My tune doesn't seem to work' is not a reason for them

[scottp999]

Originally Posted by badass335

\ I believe every vehicle produced after 03/07 has MSD81

Check your dates on that. My car was produced 4/17/2007 and my understanding is that MSD81 was not even produced for many months later.

[badass335]

Originally Posted by scottp999

Check your dates on that. My car was produced 4/17/2007 and my understanding is that MSD81 was not even produced for many months later.

A quote from the BMW TIS and you are right. I had the year wrong.

Important:

All 1 and 3 Series vehicles produced after 3/08 with MSD81 are not affected.

Also unaffected are earlier vehicles originally equipped with MSD80, but which had the DME replaced between 8/2008 and 4/2009 with an MSD81 (the only available replacement part).

[munters]

I Have an auto, 29.2 msd80 and no issues but on stage 1.