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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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      05-18-2012, 08:01 AM   #4995
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Boys & Girls,

Question, now I have updated COBB to latest update and firmware does that update my maps? I changed maps today sport lin thott, felt smoother.. or am I dreaming? Planning to go back to sport norm tomnorrow as it was too smooth

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      05-18-2012, 11:25 PM   #4996
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Why is my actual boost so much lower than requested boost?
http://www.e90post.com/forums/showthread.php?t=690889
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      05-19-2012, 01:48 PM   #4997
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I installed the latest beta stage 1 aggressive 401 map and took my car for a drive. After some spirited driving, I got a P29CE error code and service engine light. Car started sputtering and shaking. I immediately stoped the car, changed the map to stage 1 301 aggressive, and drove home. No more errors and the car seems to be running fine now. I wondering why so many people are having issues with 401 maps? BTW, this is the first time I have ever had any error codes thrown due to COBB, I'm staying away from 401 maps for now.
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      05-19-2012, 02:06 PM   #4998
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For those of you who track your car (AutoX) do you recommend not running the most aggressive tune as it applies to your specific mods?

Don't run Cobb now but just would like to know.
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      05-19-2012, 02:38 PM   #4999
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i run stage 2 plus aggressive beta v401,no issues...the car pulls hard
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      05-19-2012, 04:19 PM   #5000
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Quote:
Originally Posted by Bimmeroid View Post
I installed the latest beta stage 1 aggressive 401 map and took my car for a drive. After some spirited driving, I got a P29CE error code and service engine light. Car started sputtering and shaking. I immediately stoped the car, changed the map to stage 1 301 aggressive, and drove home. No more errors and the car seems to be running fine now. I wondering why so many people are having issues with 401 maps? BTW, this is the first time I have ever had any error codes thrown due to COBB, I'm staying away from 401 maps for now.
My personal opinion is that 4.01 uses higher boost settings and anybody that's on the edge of misfires a lower boost will get misfires on 4.01. As soon as a tried it I had to change my plugs and then I was fine.
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      05-19-2012, 04:50 PM   #5001
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Quote:
Originally Posted by Carl Morris View Post
My personal opinion is that 4.01 uses higher boost settings and anybody that's on the edge of misfires a lower boost will get misfires on 4.01. As soon as a tried it I had to change my plugs and then I was fine.
My plugs are only 10k miles old. I wonder what else could it be?
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      05-19-2012, 05:24 PM   #5002
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Quote:
Originally Posted by jetbill View Post
For those of you who track your car (AutoX) do you recommend not running the most aggressive tune as it applies to your specific mods?

Don't run Cobb now but just would like to know.
You need to datalog and analyze how well your car likes the tune. If the logs look great stage 2+ aggressive then that's what map you should run for the best performance.
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      05-21-2012, 05:33 AM   #5003
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just installed my Cobb AP yesterday and I am very happy with the results! Now I have the daunting task of trying to figure out how to understand the data logs.
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      05-21-2012, 12:40 PM   #5004
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are there alot of known cases of boost oscillation with the stg. 2+ aggressive? I'm wondering if there are specific reasons for it or just random cars?
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      05-22-2012, 11:18 AM   #5005
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Quote:
Originally Posted by AU335i View Post
are there alot of known cases of boost oscillation with the stg. 2+ aggressive? I'm wondering if there are specific reasons for it or just random cars?
I'd assume (very dangerous word on this forum) that it's still an issue since the v40x maps are still listed as beta on the COBB website.
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      05-22-2012, 02:03 PM   #5006
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Quote:
Originally Posted by benzy89 View Post
I'd assume (very dangerous word on this forum) that it's still an issue since the v40x maps are still listed as beta on the COBB website.
I got them with v301 maps lol
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      05-22-2012, 02:08 PM   #5007
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I have catless DP, and everything except section 3 is stock. Since my e92 is my DD, is running stage 2-drive safe? Or should I be running no tune?

In terms of safety I am thinking of it being harmful to my engine and thereby decreasing the life of my car.
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      05-22-2012, 02:13 PM   #5008
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Hi everyone Im considering getting the Cobb AP. Ive read that the AP increases the rev limit to 7200 RPM. Is this also true for the Auto trans or just the 6MT?
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      05-22-2012, 02:26 PM   #5009
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Quote:
Originally Posted by ihc95 View Post
Hi everyone Im considering getting the Cobb AP. Ive read that the AP increases the rev limit to 7200 RPM. Is this also true for the Auto trans or just the 6MT?
Its for both, but at the same time it is pointless to rev that high especially on stock turbos since they run out of breath up top.
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      05-22-2012, 02:33 PM   #5010
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Originally Posted by RnmEvo9 View Post
Its for both, but at the same time it is pointless to rev that high especially on stock turbos since they run out of breath up top.
Thanks. Do you know what the 6AT shifts at during WOT?
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      05-22-2012, 02:57 PM   #5011
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Originally Posted by ihc95 View Post
Thanks. Do you know what the 6AT shifts at during WOT?
If you look at COBB's dynos (in the map notes section of each tune), HP peaks around 5,000 RPMS and last until 6,000. Reving past 6500 is only good for noise as the powerband falls off substantially at that point.

Quote:
Originally Posted by AU335i View Post
I got them with v301 maps lol
Dumb question: are you sure its boost oscillation or are you leaking? Possible that at Stage 2+ that you've got a leak somewhere. You don't list any of your mods in your sig, but if you have any OEM bits left outside of the map requirements (upgraded intake, DPs & FMIC), that either the OEM DVs or CP is the source of your leak.
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      05-22-2012, 03:00 PM   #5012
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Quote:
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Thanks. Do you know what the 6AT shifts at during WOT?
If you do not manually shift, at 6800 RPM.
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      05-22-2012, 03:15 PM   #5013
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Quote:
Originally Posted by benzy89 View Post
If you look at COBB's dynos (in the map notes section of each tune), HP peaks around 5,000 RPMS and last until 6,000. Reving past 6500 is only good for noise as the powerband falls off substantially at that point.



Dumb question: are you sure its boost oscillation or are you leaking? Possible that at Stage 2+ that you've got a leak somewhere. You don't list any of your mods in your sig, but if you have any OEM bits left outside of the map requirements (upgraded intake, DPs & FMIC), that either the OEM DVs or CP is the source of your leak.
Boost hits peak ~18.5 psi consistently after the initial oscillation...


WGDC looks normal (~50-52 range) and no leak code... no codes at all lol so I don't think i'm leaking


but yes I do have stock DV's/CP
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      05-22-2012, 03:35 PM   #5014
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Originally Posted by AU335i View Post
Boost hits peak ~18.5 psi consistently after the initial oscillation...


WGDC looks normal (~50-52 range) and no leak code... no codes at all lol so I don't think i'm leaking


but yes I do have stock DV's/CP
The stock CP/DVs might not be responsive enough under WOT at that boost setting, can't forget that stock boost is less than 9 psi (so you're running about double the pressure/stress being put on the OEM bits). I'm not gonna tell you that spending ~$600 on aftermarket DVs + CP is "magically" going to fix the problem. Have you had COBB looks at your logs to see if maybe they know what's going?
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      05-22-2012, 03:44 PM   #5015
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Quote:
Originally Posted by benzy89 View Post
The stock CP/DVs might not be responsive enough under WOT at that boost setting, can't forget that stock boost is less than 9 psi (so you're running about double the pressure/stress being put on the OEM bits). I'm not gonna tell you that spending ~$600 on aftermarket DVs + CP is "magically" going to fix the problem. Have you had COBB looks at your logs to see if maybe they know what's going?
yeah... I posted a thread and a few people say its a known issue amongst certain cars on stage 2+ aggressive... thats why I'm wondering if there was a specific reason or just randoms.
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      05-22-2012, 05:24 PM   #5016
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Quote:
Originally Posted by AU335i View Post
are there alot of known cases of boost oscillation with the stg. 2+ aggressive? I'm wondering if there are specific reasons for it or just random cars?
It's a well known issue that cobb has stated a few times (in this thread) that they are working to fix before v4 comes out of beta. I have it too, pretty much don't notice it at this point but it's very annoying when you pay attention to it.
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