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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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      07-22-2012, 08:00 AM   #5875
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Originally Posted by sparkyblue View Post
Sweet! This is a a pull done in about 60 Degree temps, traction control completely disabled, 75% CALI 91 OCT Shell & 25% E85 Chevron.

Map has been installed for a day, with a handful (5-10) WOT pulls done, so adaptations should be set.

I started logging at a stop light, and did a 2nd & 3rd gear pull.

Would you please check if I'm running safely with this map & mixture.
Everything looks good!!!
-You only logged timing corrections on cylinders 1&2 so i can't say for SURE you didn't thave any timing corrections, but you didn't on the 2 that you logged.
-No Throttle closures
-You're within 10 points of hitting load targets(normal)
-AFRs are solid
-Fuel trims are good. STFTs(which is most important) spiked at ~28% but recovered quickly back into the low 20's and then continued trending down

Looks great, especially for running an aggressive map on ACN. e85 is a wonderful thing. Keep the mix as you have it now and you should have no problems.

Keep in mind that on e85 you may occasionaly trigger a "fuel mixture" code. It's not a problem and does nothing to affect performance.
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      07-22-2012, 08:42 AM   #5876
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Originally Posted by FlyLow335i View Post
Timing corrections don't necessarily mean you have too aggressive of a map. If you are seeing multiple cylinders getting corrections together then its what we look for but little random corrections are typically just noise. The sensors here are too sensitive and you should learn to weed through the "noise" and find the actual events.
+1000 flylow knows exactly what he's talking about.

Based on what he posted in the log it looks like it may be something mechanical(plug, coil, injector) if it is always on that cylinder. NO.4 was making a couple corrections at a time while the otheres were silent.
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      07-23-2012, 12:35 AM   #5877
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Quote:
Originally Posted by rader1 View Post
Everything looks good!!!
-You only logged timing corrections on cylinders 1&2 so i can't say for SURE you didn't thave any timing corrections, but you didn't on the 2 that you logged.
-No Throttle closures
-You're within 10 points of hitting load targets(normal)
-AFRs are solid
-Fuel trims are good. STFTs(which is most important) spiked at ~28% but recovered quickly back into the low 20's and then continued trending down

Looks great, especially for running an aggressive map on ACN. e85 is a wonderful thing. Keep the mix as you have it now and you should have no problems.

Keep in mind that on e85 you may occasionaly trigger a "fuel mixture" code. It's not a problem and does nothing to affect performance.
Thank's for the break down! Its great to hear that the car is running well with this mix.

I figure from now on, ill run the Sport ACN91 on the weekdays and on the weekends fill up with an E85/91 mix for fun.

What variables do you recommend I remove to allow room for the other 4 cylinders read-outs. I tried selecting all 6, but unfortunately I've found the AP can only log a handful of variables at a time.

Very much appreciated! Cheers!
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      07-23-2012, 02:19 AM   #5878
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Originally Posted by sparkyblue View Post
Thank's for the break down! Its great to hear that the car is running well with this mix.

I figure from now on, ill run the Sport ACN91 on the weekdays and on the weekends fill up with an E85/91 mix for fun.

What variables do you recommend I remove to allow room for the other 4 cylinders read-outs. I tried selecting all 6, but unfortunately I've found the AP can only log a handful of variables at a time.

Very much appreciated! Cheers!
Just revert to default datalogging channels and add stfl .
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      07-23-2012, 07:31 AM   #5879
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Would love anyones thoughts on this log. Timing is being pulled on one cylinder. Ill check the basics, new plug and swap the coil.

I will relog to verify the one cylinder is the culpret.

Anyone see anything else odd?

...and i will turn on the fuel trims for next log. Anything else i should do?
What map is this again? Looks like S2+ Sport! Your timing advance is low
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      07-23-2012, 11:04 AM   #5880
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What map is this again? Looks like S2+ Sport! Your timing advance is low
His charge air temps were 105 when he started the pull and were over 120 by the time he let out. With IATs that high the DME will be using the timing correction factor table to reduce the timing map. These timing reductions will not appear as a "corrections" because it is what the DME wants.
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      07-23-2012, 06:52 PM   #5881
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Originally Posted by rader1 View Post
His charge air temps were 105 when he started the pull and were over 120 by the time he let out. With IATs that high the DME will be using the timing correction factor table to reduce the timing map. These timing reductions will not appear as a "corrections" because it is what the DME wants.
stage 1 aggressive.
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      07-23-2012, 09:36 PM   #5882
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2008 335i MT 63,000 miles new everything, walnut blasted, 25% E85/93oct, wagner, stock everything else, Stg1+ Agg ST 4.02, 90* ambient, FMIC runs about 16-18* over ambient in these temps. This run was after a few good hard WOT runs.

Fuel trims are right up at 34% at max torque then taper to redline. AFR's are okay. I may richen them up a little.


T
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File Type: txt datalog18_2 - Copy.txt (21.1 KB, 42 views)
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      07-26-2012, 02:54 PM   #5883
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Ok guys just installed the AP and ran the 4.01 for the first time. Stage 1 Aggressive. How does she look?

Attached is the csv but here is a quick chart.

And yes this was 2nd gear. Wasn't close to a hwy so couldn't snag a 3rd gear pull yet. Tonight I'll have some from on the dyno.

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Last edited by redefined; 07-26-2012 at 03:41 PM.
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      07-28-2012, 08:15 PM   #5884
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Has anyone made their own aggressive map intergrating meth using the ATR software? I recently had a HFS-3 meth kit installed and got a ATP Pro tune. The car feels great, but has been having timing corrections in my data logs. Im wondering if anyone has any custom ATR maps intergrating meth that they would be willing to share? I want to give some other meth maps a try until my tuner gets back to me with a revised map. Any help would be great.
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      07-29-2012, 07:12 PM   #5885
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Hi,

I have Raceland DP's and when running stage 2 I still get the check engine light, with the following codes:

P2C73 - lambda probe after catalytic converter, signal
P2C74 - lambda probe after catalytic converter 2, signal

I can't get rid of the codes .... can someone please help me out what I can/should do??

THANKSSS
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      07-29-2012, 08:14 PM   #5886
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Hi,

I have Raceland DP's and when running stage 2 I still get the check engine light, with the following codes:

P2C73 - lambda probe after catalytic converter, signal
P2C74 - lambda probe after catalytic converter 2, signal

I can't get rid of the codes .... can someone please help me out what I can/should do??

THANKSSS
try updating your accesport
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      07-30-2012, 07:32 PM   #5887
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try updating your accesport

I just did it yesterday... 4.01 and still there...PLS HELP
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      07-30-2012, 09:10 PM   #5888
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next ,, clean both after cat o2 sensor with brake cleaner,

good luck !!!
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      07-31-2012, 07:08 PM   #5889
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Well...I don't know how to do that... lol
Any other suggestions?
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      07-31-2012, 07:22 PM   #5890
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Well...I don't know how to do that... lol
Any other suggestions?
Crawl under the car then remove the O2 sensors post catalytic converters and spray them off with brake cleaner.
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      07-31-2012, 10:23 PM   #5891
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ok I just got my Cobb for my 335i (bone stock) and I loaded up v3.01 sport mode linear throttle. I just picked that one to begin with and quickly noticed power while I gave it a little gas around 40 mph.

When I first backed out of my garage and put the car into D, I heard a few seconds of what sounded like a ping that quickly went away. As I was reading some posts I found version 4.01 is available.

Question is, do I need to return the car back to stock or can I just flash it with 4.01 since its currently at 3.01?

Also, is sport linear the best option for a stock car?

Thanks

Last edited by nt_loader; 07-31-2012 at 10:31 PM.
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      07-31-2012, 10:34 PM   #5892
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Originally Posted by nt_loader View Post
As I was reading some posts I found version 4.01 is available.

Question is, do I need to return the car back to stock or can I just flash it with 4.01 since its currently at 3.01?

Also, is sport linear the best option for a stock car?

Thanks
You can just upload the Stage 1 Maps (v401) and flash to them (no need to completely uninstall the AP & then reinstall with the new tune). This goes on if you decide to go from Stage 1 Sport to Stage 1 Aggressive and/or other tunes

The Linear Throttle Mapping was designed for track racing since the amount of gas input directly returns the amount of power (10% throttle pressure = 10% power, 75% throttle = 75% power). I personally prefer the Stock Throttle Mapping, I like that the car goes on boost immediately & that the gas is a more sensitive (when compared to Linear Mapping). One isn't better than the other, it's personal preference
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      07-31-2012, 10:36 PM   #5893
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Originally Posted by nt_loader View Post
ok I just got my Cobb for my 335i (bone stock) and I loaded up v3.01 sport mode linear throttle. I just picked that one to begin with and quickly noticed power while I gave it a little gas around 40 mph.

When I first backed out of my garage and put the car into D, I heard a few seconds of what sounded like a ping that quickly went away. As I was reading some posts I found version 4.01 is available.

Question is, do I need to return the car back to stock or can I just flash it with 4.01 since its currently at 3.01?

Also, is sport linear the best option for a stock car?

Thanks

Best advice is use which ever map that is best according to what Cobb says to use. The sport is best from my personal experience. And no need to put car back to stock to move to different stages. The maps will overwrite the previous.
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      07-31-2012, 10:38 PM   #5894
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Thanks for the replies, I appreciate it and will upgrade to 4.01 tomorrow. I forgot to ask, is there a break in period at all?

So far so good, I can actually feel the power!!!!!
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      07-31-2012, 10:40 PM   #5895
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What kind of hp/tq gains should I get going from a v401 Stage 1 Agressive (With DCI's/Berk Resonated Catless Mids & Sport Axleback) to a v401 Stage 2 Agressive (VRSF DP'S).

Im still on the fence between DP's & an intercooler. I currently only have the funds for one, and the DP's are actually far cheaper at the moment.
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      07-31-2012, 11:37 PM   #5896
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What is the needed to run Stage 2 v4.01? My car is completely stock so im not sure. I search but didnt find any info.

Thanks
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