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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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      03-25-2012, 12:29 PM   #4489
rader1
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Quote:
Originally Posted by crypticc View Post
i thought it was correction that was undesirable so logged. not timing itself
Correction tells you how much of a correction was made, timing shows you how the timing actually looks.
If you log correction you may just get a flat line but you won't know how timing really looks.
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      03-25-2012, 12:46 PM   #4490
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Just log all cylinders timings and forget about correction.
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      03-25-2012, 04:24 PM   #4491
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Quote:
Originally Posted by paapaa View Post
great! i think with Cobb AP tuning i broke my 335i AT
Car shakes and rumbles in normal driving.this happened first time ever,
after did the logging :/ = fast accelerations.

didnt rumble at all after the accelerations,even when cruising at slow
speed to home...only after started car next time...then its like rumbling...
just terrified
----
continues:

i cleared the DTC codes..car ran 100m ok then shaking again and barely 100m
back to home.now with codes:
P29DC Cylinder Injection Shutdown (this was only error after first time car started to shake)
P29F2 High-Pressure fuel system,fuel pressure
P2FBF Fuel pressure after release of the injection

seems that car starts hardly like in youtube video:
http://www.youtube.com/watch?v=ieIe3pkXa4M

just hope it is just the HPFP and hope its in BMWs Warranty in europe too
like in USA 200 000km / 10y.
It looks like HPFP really dying unfortunately there is no warranty on PUMP like in US...
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      03-25-2012, 05:14 PM   #4492
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Quote:
Originally Posted by RimasRS View Post
It looks like HPFP really dying unfortunately there is no warranty on PUMP like in US...
Might get lucky with the insurance company though, atleast thats how its handled in sweden, i can just pay the insurance deductible and get new injectors/coils/fuelpump/engine/trans.
Covered while the car is "younger" than ~6 years and 120k km
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      03-26-2012, 07:59 AM   #4493
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thanks for information.after using google search and reading here and there blogs...i think&hope Cobb AP is not causing this hpfp issue no more than other
tuning remaps. car has 114 000km and dont know if hpfp has ever been replaced so if its OEM...well no wonder if its life ends. only hope that the 13517616170 ,newest pump is stronger,havent found anything bad related to that one

still, if they replace the hpfp pump...i will be asking myself if i dare to use stage2+ soon after replacement :/

Last edited by paapaa; 03-26-2012 at 08:32 AM.
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      03-26-2012, 08:51 AM   #4494
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Cobb or anyone in the know, can you list a full set of datalog parameters you generally require to have when viewing and troubleshooting logs? I'd generally just log everything but the AP can't capture everything, and unnecessary channels decrease the sample rate.
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      03-26-2012, 09:01 AM   #4495
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Here are the parameters you will want to log if you want someone to take a look at your logs to see how things are running.

RPM
Boost Mean Abs
Boost Req Abs
MAF Req (WGDC)
MAF
Load Req
Load Act
Lambda (Bank 1)
Lambda (Bank 2)
Timing Corr 1, 2, 3, 4, 5, 6
Timing Cylinder 1
WGDC After PID
Fuel Mode
TPS Actual
Pedal Position (I like to use this to see when driver requested Full TPS)
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      03-26-2012, 11:04 AM   #4496
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^ I'd probably log timing on all 6cyls, and correction on just 1 if you can't get all 6 of each.
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      03-26-2012, 11:15 AM   #4497
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Quote:
Originally Posted by AWD Addict View Post
^ I'd probably log timing on all 6cyls, and correction on just 1 if you can't get all 6 of each.
When I was sending logs to COBB, I was requested to log using the default parameters which include timing for Cyl 1 and correction for all 6.

Not sure why everyone is so against logging correction? I find it easier to quickly locate multi-cylinder timing pulls during WOT in long log files by scanning cylinder correction columns (part-throttle cruising corrections should obviously be ignored).

I found that there is a bug in logging output, where cylinder correction does not match the proper cylinder timing number. Couple of cylinders are swapped, so maybe that's what confuses people?
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      03-26-2012, 11:17 AM   #4498
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Just log timings on all cylinders and forget about correction. You will see anyway if there is some. STFT are also good to have especially if you run injection water/meth.
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      03-26-2012, 11:22 AM   #4499
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Quote:
Originally Posted by enrita View Post
Just log timings on all cylinders and forget about correction. You will see anyway if there is some. STFT are also good to have especially if you run injection water/meth.
Perhaps others will heed your advice, but I personally find that it takes less concentration to locate timing pulls using the correction columns, and the math for the amount of pull is already done fore me. Easier on the brain
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      03-26-2012, 11:34 AM   #4500
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^ I agree. I'm just listening to what people are saying when they review logs, and they're looking more closely at total timing rather than just correction.

Is there some concern that the advance isn't happening properly?
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      03-26-2012, 06:38 PM   #4501
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hey guys, just tuned cobb onto my car, stage 1 aggresive. this map is safe for a stock car with 93 octane right? also, my car is at around 36k miles, and i dont think the spark plugs have been changed by the previous owner (i bought the car at 32k miles). however, i havent experienced misfires. i've only had the tune for less than a day now, should i be worried about misfires?
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      03-26-2012, 06:47 PM   #4502
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Quote:
Originally Posted by Ernerd View Post
hey guys, just tuned cobb onto my car, stage 1 aggresive. this map is safe for a stock car with 93 octane right? also, my car is at around 36k miles, and i dont think the spark plugs have been changed by the previous owner (i bought the car at 32k miles). however, i havent experienced misfires. i've only had the tune for less than a day now, should i be worried about misfires?
Unless you're misfiring don't worry about it. Logging and keeping tabs on the tune that way is always a good idea though.
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      03-26-2012, 07:19 PM   #4503
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would it be alright to drive in valet map around town for a week?
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      03-26-2012, 07:29 PM   #4504
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Quote:
Originally Posted by RimasRS View Post
It looks like HPFP really dying unfortunately there is no warranty on PUMP like in US...
You might want to check....I'm in Germany and had mine replaced under warranty.
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      03-26-2012, 07:59 PM   #4505
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Tried out Virtual dyno for the first time. Anything I need to change settings wise? I clicked the SAE button, added driver wieght and put in the actual air temp in of 55f.

Not a single timing correction! And thats on cali 91 octane with 5 gals e85 to 1/2 tank of 91. Running cobb stage 2+ aggresive
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      03-26-2012, 08:03 PM   #4506
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Quote:
Originally Posted by Asian Thunder View Post
would it be alright to drive in valet map around town for a week?
Yes your car will be so slow tho, I turn in Valet mode anytime i go on a road trip
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      03-26-2012, 08:36 PM   #4507
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Originally Posted by E90SoFlo View Post
Yes your car will be so slow tho, I turn in Valet mode anytime i go on a road trip
does valet mode open wg's 100% of the time?
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      03-26-2012, 08:39 PM   #4508
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Quote:
Originally Posted by BMW335E93 View Post
does valet mode open wg's 100% of the time?
yes your turbos are bypassed all the time.
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      03-26-2012, 08:41 PM   #4509
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Quote:
Originally Posted by marv85 View Post
yes your turbos are bypassed all the time.
my car sounds so nice in this mode on start up ...
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      03-26-2012, 08:45 PM   #4510
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Quote:
Originally Posted by BMW335E93 View Post
my car sounds so nice in this mode on start up ...
Definitely does, as the turbos aren't attenuating engine noise

it screams at higher rpms too (and doesn't go anywhere)
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