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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > All COBB Tuning AccessPORT Flash for N54 335i Discussion Here



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      04-09-2013, 07:19 PM   #7283
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Quote:
Originally Posted by VNeBLOB42 View Post
I uninstall my COBB For Oil Changes. Something may come up, "oh Mr. Marquez, we got a new DME Flash Upgrade for you, let's do it while we have you in for an oil change"
could happen lol
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      04-09-2013, 07:20 PM   #7284
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Quote:
Originally Posted by RombinHood2 View Post
Thank you for the info. Unfortunately, I worded my question ambiguously I was referring to the read/write flash communication, not the request code command which is a much lower authority request. Has it been verified that a dealership diagnostic/programming computer is able to re-flash a DME that is programmed with a Cobb flash? Or does it log an error saying that it's an unrecognizable DME? I have reason to suspect that Cobb changes the software ID and/or the initialization code to keep their ROM from being read through OTS ROM reading devices. Would seem to be the smart thing to do when it comes to IP protection.
oh I see what you're saying and it definitely makes sense. However, I don;t think anyone tried to attempt that, at least no one posted that it happened with him
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      04-10-2013, 12:57 PM   #7285
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Cobb: Any chance of disabling the underboost codes so that we can simply bypass the stock boost control system? Set it @ 18 or 20 psi or whatever in the DME and then use an EBC to control boost? The DME would still respond to the actual boost (just like it does if you underboost currently) but if it just didn't code/limp then it would enable the EBC usage with external wastegates etc.
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      04-10-2013, 01:05 PM   #7286
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There's more to it than just the 30FF code. The DME will also probably throw a 30FC code for "wastegate control." However, i have no idea how much coding and logic reworking is required to that so that actually might be a possible workaround.
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      04-10-2013, 01:33 PM   #7287
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Quote:
Originally Posted by Ænema View Post
There's more to it than just the 30FF code. The DME will also probably throw a 30FC code for "wastegate control." However, i have no idea how much coding and logic reworking is required to that so that actually might be a possible workaround.
Yea I'm thinking more along the lines of "disable/bypass the entire boost control system" and then see what codes pop up, and go from there.
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      04-10-2013, 01:51 PM   #7288
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Quote:
Originally Posted by DallasBoosted View Post
Yea I'm thinking more along the lines of "disable/bypass the entire boost control system" and then see what codes pop up, and go from there.
As appealing as this sounds i have a feeling it may take A LOT of effort to make happen. Since almost everything the DME does is based on load(boost via MAF) and is closed loop i would think that bypassing the boost control system wouldn't be practical. However, like you said, just disabling the limp modes for underboost/WG control(like we can disable misfire detection) and using the DME to set a "boost ceiling" may work out just fine.

Of course, it may also be possible to just use an EWG and spend a lot of time working backwards dialing in the requested load to the actual boost. Unfortunately, in that situation you still have the DME complaining about the WGs not reacting to it's requests.
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      04-10-2013, 02:32 PM   #7289
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Quote:
Originally Posted by Ænema View Post
As appealing as this sounds i have a feeling it may take A LOT of effort to make happen. Since almost everything the DME does is based on load(boost via MAF) and is closed loop i would think that bypassing the boost control system wouldn't be practical. However, like you said, just disabling the limp modes for underboost/WG control(like we can disable misfire detection) and using the DME to set a "boost ceiling" may work out just fine.

Of course, it may also be possible to just use an EWG and spend a lot of time working backwards dialing in the requested load to the actual boost. Unfortunately, in that situation you still have the DME complaining about the WGs not reacting to it's requests.
I thought about the second method, but then if the weather changes and the DME requests more/less boost you'd probably run into 30FF/throttle closures.

The other thing I was thinking about is the DME requests different boost based on throttle position so trying to go say 50% throttle (depending on your map, of course) and it requests half boost, which is totally possible with full DME control of the wastegates, would crap out if an ordinary EBC let the turbos spool up fully like they would.

Hmmm...
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      04-10-2013, 03:29 PM   #7290
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Quote:
Originally Posted by DallasBoosted View Post
I thought about the second method, but then if the weather changes and the DME requests more/less boost you'd probably run into 30FF/throttle closures.

The other thing I was thinking about is the DME requests different boost based on throttle position so trying to go say 50% throttle (depending on your map, of course) and it requests half boost, which is totally possible with full DME control of the wastegates, would crap out if an ordinary EBC let the turbos spool up fully like they would.

Hmmm...
Even if the boost control could be worked out, you still run into the problem with O2 sensor placement for a single. Putting the sensors post turbo isn't going to work. Putting them pre-turbo in collectors for each bank isn't exactly ideal... i think the vishnu ST are going to be seeing issues as they start putting some age on the sensors, especially if they ever get to the point of actually running them like they have the capability to run.
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      04-10-2013, 04:56 PM   #7291
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Quote:
Originally Posted by Ænema View Post
Even if the boost control could be worked out, you still run into the problem with O2 sensor placement for a single. Putting the sensors post turbo isn't going to work. Putting them pre-turbo in collectors for each bank isn't exactly ideal... i think the vishnu ST are going to be seeing issues as they start putting some age on the sensors, especially if they ever get to the point of actually running them like they have the capability to run.
Well, if replacing o2 sensors now and then is the worst part, thats not so bad.
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      04-11-2013, 01:25 PM   #7292
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Ordered the COBB AP for my 2010 335XI yesterday. Good news it will be here tomorrow. Bad news is I paid 130.00 for priority shipping. (I'm very impatient).

I'm sure Stage 2 will be right around the corner.

Quick question. Did I completely waste my money buying the aFe Cold Air intake system (Stage-2, Magnum FORCE PRO 5R 54-11472)?

Seems from everything that I read it's a complete waste of money.
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      04-11-2013, 10:10 PM   #7293
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When you install/uninstall Cobb, does this also reset engine adaptations at the same time, or do you have to do this manually?

Conversely, when you re-install Cobb after a dealer visit, do you have to wait for re-adaptation to take place?
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      04-11-2013, 10:16 PM   #7294
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Quote:
Originally Posted by buylongterm View Post
Ordered the COBB AP for my 2010 335XI yesterday. Good news it will be here tomorrow. Bad news is I paid 130.00 for priority shipping. (I'm very impatient).

I'm sure Stage 2 will be right around the corner.

Quick question. Did I completely waste my money buying the aFe Cold Air intake system (Stage-2, Magnum FORCE PRO 5R 54-11472)?

Seems from everything that I read it's a complete waste of money.
OMG bro... Most of the sellers on here already over overnight/2day with a purchase+discount.

no performance part is a waste
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      04-11-2013, 10:25 PM   #7295
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Originally Posted by 335iRlz View Post
OMG bro... Most of the sellers on here already over overnight/2day with a purchase+discount.

no performance part is a waste
Ouch. This one hurts. I should say something. Seriously. That's BS.

Thanks for the heads up and I guess I'll try the intake.
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      04-11-2013, 11:20 PM   #7296
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Quote:
Originally Posted by buylongterm View Post
Ordered the COBB AP for my 2010 335XI yesterday. Good news it will be here tomorrow. Bad news is I paid 130.00 for priority shipping. (I'm very impatient).

I'm sure Stage 2 will be right around the corner.

Quick question. Did I completely waste my money buying the aFe Cold Air intake system (Stage-2, Magnum FORCE PRO 5R 54-11472)?

Seems from everything that I read it's a complete waste of money.
The very next and best bang for the buck mod is a new FMIC to take you to Stage 1+. It's more power than Stage 2 and keeps your inlet temps nice and cool. Better for the engine too. I have a Helix. Good luck!
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      04-12-2013, 10:13 PM   #7297
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hey I don't know how to attach a log but would like someone to have a look at a log i just did and tell me what they think. if anyone is willing to look please pm me a email addy

Thanks
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      04-12-2013, 10:52 PM   #7298
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Originally Posted by Phantom 335i View Post
hey I don't know how to attach a log but would like someone to have a look at a log i just did and tell me what they think. if anyone is willing to look please pm me a email addy

Thanks
Create a .zip folder and then copy the log into the folder and attach that.
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      04-12-2013, 11:07 PM   #7299
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Ok I will look into that I just have the csv file on my iPad right now
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      04-13-2013, 12:13 AM   #7300
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Originally Posted by Phantom 335i View Post
Ok I will look into that I just have the csv file on my iPad right now
Um... how did you get it on your iPad? Did you email it to yourself?

You can even Change the file extension it to a .txt
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      04-13-2013, 09:55 AM   #7301
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Yes just emailed it to myself
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      04-13-2013, 10:02 AM   #7302
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Quote:
Originally Posted by JHR View Post
The very next and best bang for the buck mod is a new FMIC to take you to Stage 1+. It's more power than Stage 2 and keeps your inlet temps nice and cool. Better for the engine too. I have a Helix. Good luck!

Thank you. Everything I've read so far about the Helix is extremely positive. Gonna buy one ASAP. Will installing a FMIC void my warranty? not only do I have a CPO car, but they also through in a 5 year 100K full BMW warranty for free. and its nice to know I will have brakes, rotors, services etc covered.

I received my Cobb AP yesterday and flashed my car with the stage 1+ aggressive map. No issues, no error codes.


All I have to say is WOW! So far it has exceeded every expectation I had. The gains are VERY noticable. The car is a beast and I really like the aggressive map. And trust me, I dont get impressed easily. I driven or been in some of the fastest cars or boats there are. My brother owned a ruf twin turbo and recently sold his Heffner lambo gallardo that dyno'd at 1135HP. (That car was disturbing)

If anyone is on the fence deciding if they should spend the money on the Cobb AP I'd say absolutely positively YES. I was so close to going with Dinan again, but I'm SO glad I didn't. It's been a long time since I owned my 2002 M3 that I Dinan badged. I know this is gonna sound crazy, But this car seems faster and I didn't have to spend close to 10K on parts!


The only draw back is I keep looking at my speedometer and saying "damn it! I'm doing over 100 again?" The car just wants to keep going. This simple little mod is going to get me in serious trouble. Can't wait for stage 2. :-)

Gonna install the intake today for the hell of it. (Though something tells me i should return it and put the money towards a fmic. )

Thanks everyone for all your insite and knowledge. It's paid off immensely


Christian
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Last edited by buylongterm; 04-13-2013 at 10:29 AM.
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      04-13-2013, 10:25 AM   #7303
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here is my log, Stage 2+ sport.
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File Type: zip datalog5.csv.zip (4.8 KB, 38 views)
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      04-13-2013, 11:06 AM   #7304
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Please check my logs

Please check my logs. Stage 1+ Aggressive w/ 93 octane Shell. New plugs and injectors. 49xxx mi. Seeing timing correction of -4 on cylinder 4 and -3 on cylinder 6 when I shift into 3rd gear. On a prior pull I saw correction on cylinder 5, so it's not consistently the same cylinder.

If I am seeing sporadic corrections of -3 to -4 on one or two cylinders, and usually different cylinders, am I ok to stay at stage 1+ aggressive?

Thanks
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File Type: txt datalog5.csv.txt (36.6 KB, 42 views)
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