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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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      07-31-2013, 10:21 AM   #8097
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Cobb autoclears existing codes when you un-marry it. So you could be in a pickle if the codes are only popping up due to tune induced stress.
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      07-31-2013, 10:27 AM   #8098
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That's all what I needed to know, thank you timtech and 135Pats!
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      08-01-2013, 12:41 AM   #8099
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I8AOS 4.01 Drive map Stage 1 BOOST

From my reading, the stock boost for N54 335i is approximately 8.5psi.
What is the boost level for Stage 1 Drive Map?
This is the most conservative map, yet I got the following code today with a half-lit engine:

P2AAF
P30FF

Highpressure fuel pump possibility
Low Boost.

66K miles.
I have been using Cobb for less than 5 days...and already a code on the most conservative map??!?!?! What gives.

I cleared the code...hopefully it doesnt come back on...
It was in the 3k-4k RPM range...

So now I am driving under the 2500k range.....

Anyone else experience this on the Stage 1 Drive map?!?
I can understand if it was on Aggressive......but Drive!
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      08-01-2013, 06:58 AM   #8100
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Quote:
Originally Posted by usctrojansdent View Post
From my reading, the stock boost for N54 335i is approximately 8.5psi.
What is the boost level for Stage 1 Drive Map?
This is the most conservative map, yet I got the following code today with a half-lit engine:

P2AAF
P30FF

Highpressure fuel pump possibility
Low Boost.

66K miles.
I have been using Cobb for less than 5 days...and already a code on the most conservative map??!?!?! What gives.

I cleared the code...hopefully it doesnt come back on...
It was in the 3k-4k RPM range...

So now I am driving under the 2500k range.....

Anyone else experience this on the Stage 1 Drive map?!?
I can understand if it was on Aggressive......but Drive!
30FF is a code for a boost leak / underboost. Do you have logs?
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      08-01-2013, 07:02 AM   #8101
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I noticed this morning that I had a fuel pump plausibility code (2AAF) and cleared it. I get this code from time to time when doing a few WOT pulls so it is no big deal as I am running an E45 map on the stock LPFP.

When I cleared the codes this morning, the ABS light showed up in idrive and in the gauge cluster during the code removal process. Once the codes were cleared, the lights were gone and the code never showed up in my AP.

I tried clearing a couple more times and each time the ABS light would show up. Has anyone else experienced this?

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      08-01-2013, 04:55 PM   #8102
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If the maps are changed... Could an accessport for an N54 work for an N55 engine?
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      08-01-2013, 08:52 PM   #8103
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Quote:
Originally Posted by JStang View Post
I noticed this morning that I had a fuel pump plausibility code (2AAF) and cleared it. I get this code from time to time when doing a few WOT pulls so it is no big deal as I am running an E45 map on the stock LPFP.

When I cleared the codes this morning, the ABS light showed up in idrive and in the gauge cluster during the code removal process. Once the codes were cleared, the lights were gone and the code never showed up in my AP.

I tried clearing a couple more times and each time the ABS light would show up. Has anyone else experienced this?

I saw that yesterday too when changing maps. I think it happened once before. Both times only since the Alpina B3 TCU flash. It clears if you clear codes, turn off the engine and restart.
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      08-01-2013, 09:41 PM   #8104
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What am I looking for as far as timing drops go? Is it the actual value (as in below a given degree is always bad during WOT) or is it dips in the timing under WOT?

When looking at dips, what is considered a bad drop? More than a few degrees?
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      08-01-2013, 11:45 PM   #8105
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Quote:
Originally Posted by 2008E90TT View Post
What am I looking for as far as timing drops go? Is it the actual value (as in below a given degree is always bad during WOT) or is it dips in the timing under WOT?

When looking at dips, what is considered a bad drop? More than a few degrees?
What you dont want to see is a sudden and severe pull in timing. So if youre starting at say 5 degrees, you should see a steady climb upwards. Minor timing pulls happen, but if you see a serious timing retard, the DME isnt liking what its seeing.
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      08-02-2013, 12:06 AM   #8106
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i have a question,
im considering doing the Alpina flash for the transmission,
does this in anyway affect cobb?

do i need to uninstall the cobb first, then re-marry it to the car after the Alpina flash has been done?

im thinking it wouldnt affect it either way - but just want to be sure
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      08-02-2013, 12:18 AM   #8107
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Quote:
Originally Posted by dbudh001 View Post
i have a question,
im considering doing the Alpina flash for the transmission,
does this in anyway affect cobb?

do i need to uninstall the cobb first, then re-marry it to the car after the Alpina flash has been done?

im thinking it wouldnt affect it either way - but just want to be sure
No.

Alpina is a TCU flash.
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      08-02-2013, 08:23 AM   #8108
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Quote:
Originally Posted by 135Pats View Post
What you dont want to see is a sudden and severe pull in timing. So if youre starting at say 5 degrees, you should see a steady climb upwards. Minor timing pulls happen, but if you see a serious timing retard, the DME isnt liking what its seeing.
Thanks, I'll post mine once I get access to Excel to plot the data.
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      08-02-2013, 08:38 AM   #8109
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Quote:
Originally Posted by Jeffman View Post
I saw that yesterday too when changing maps. I think it happened once before. Both times only since the Alpina B3 TCU flash. It clears if you clear codes, turn off the engine and restart.
Did you recently update to the newest firmware? I'm wondering if they changed something during the latest update. Maybe Cobb Tuning can chime in.
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      08-02-2013, 09:13 AM   #8110
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Quote:
Originally Posted by 2008E90TT View Post
Thanks, I'll post mine once I get access to Excel to plot the data.
You should use my grapher, it will make things easier
http://www.e90post.com/forums/showthread.php?t=665232

Timing drops >3* accross 3 adjacent cylinders are highlighted in red, and 0-3* accross 3 adjacent cylinders are highlighted orange. This way you get a quick glimps into what is going on.
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      08-02-2013, 08:35 PM   #8111
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For those taking their car to the dealer for warranty work, are you all flashing to a stock map or are you completely "unmarrying" the COBB from your vehicle? Or are these actions one in the same?
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      08-02-2013, 08:47 PM   #8112
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Quote:
Originally Posted by bimmertt View Post
For those taking their car to the dealer for warranty work, are you all flashing to a stock map or are you completely "unmarrying" the COBB from your vehicle? Or are these actions one in the same?
Unmarry the device
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      08-02-2013, 08:49 PM   #8113
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Quote:
Originally Posted by bimmertt View Post
For those taking their car to the dealer for warranty work, are you all flashing to a stock map or are you completely "unmarrying" the COBB from your vehicle? Or are these actions one in the same?
They are not the same. You should unmarry if you have to go in for warranty work.
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      08-02-2013, 09:33 PM   #8114
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Originally Posted by deathbunny View Post
They are not the same. You should unmarry if you have to go in for warranty work.
This
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      08-04-2013, 09:56 AM   #8115
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Quote:
Originally Posted by JStang View Post
I noticed this morning that I had a fuel pump plausibility code (2AAF) and cleared it. I get this code from time to time when doing a few WOT pulls so it is no big deal as I am running an E45 map on the stock LPFP.

When I cleared the codes this morning, the ABS light showed up in idrive and in the gauge cluster during the code removal process. Once the codes were cleared, the lights were gone and the code never showed up in my AP.

I tried clearing a couple more times and each time the ABS light would show up. Has anyone else experienced this?

The only time I have seen this is when on a Dyno.
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      08-05-2013, 12:48 PM   #8116
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Quote:
Originally Posted by JStang View Post
I noticed this morning that I had a fuel pump plausibility code (2AAF) and cleared it. I get this code from time to time when doing a few WOT pulls so it is no big deal as I am running an E45 map on the stock LPFP.

When I cleared the codes this morning, the ABS light showed up in idrive and in the gauge cluster during the code removal process. Once the codes were cleared, the lights were gone and the code never showed up in my AP.

I tried clearing a couple more times and each time the ABS light would show up. Has anyone else experienced this?

Its normal. Since I merged the code for the N55 and N54 products, there are extra modules it tries to clear codes on. The ABS doesn't like to lose communication while this is happening, so it triggers a warning until comms are completely restored.

-Josh
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      08-05-2013, 01:09 PM   #8117
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Whenever I uninstall or install my Cobb tune, the buttons (all of them) on my radio faceplate stop working. It happens sometimes when I change tunes as well. Anyone else ever had this happen? Dying battery?
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      08-05-2013, 04:38 PM   #8118
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Quote:
Originally Posted by davidwarren View Post
Whenever I uninstall or install my Cobb tune, the buttons (all of them) on my radio faceplate stop working. It happens sometimes when I change tunes as well. Anyone else ever had this happen? Dying battery?
first i have heard of this. Try getting the battery tested.
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