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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 > MHD "take a look at my log" thread



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      05-21-2022, 08:04 PM   #5523
Habookedeem
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Hey guys new to data logging. Boost, not hitting boost target. Getting a 2f6c 30ff code with half ce at around 5/6k rpm. This log shows that.

I saw cyl 1,3,5 timing cor? Dip just prior to when I assumed the ce light came on. Any help appreciated.

https://datazap.me/u/habookedeem/log...38;data=3-4-20
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      05-22-2022, 07:47 PM   #5524
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Quote:
Originally Posted by Saif2018 View Post
Assuming your on a custom tune,

I'm guessing DME is closing throttle as a result of which boost is dropping due to load actual taking a nose dive from 5k, no idea why it's dropping so much. You'll have to send the log off to your tuner and ask your tuner.
Thanks. Waiting on Ken, seems like business is booming for him... Hoping it's just his base map, but we'll see. I cant afford any more surprises with this car!
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      05-22-2022, 11:54 PM   #5525
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Quote:
Originally Posted by TurboTom View Post
Thanks. Waiting on Ken, seems like business is booming for him... Hoping it's just his base map, but we'll see. I cant afford any more surprises with this car!
N54 and no surprises lol,
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      05-25-2022, 07:17 PM   #5526
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Chasing a gremlin now.. Lol.
Not sure what's happened. Changed lpfp and coils. Thought ngk plugs looked good. Per my tuner I used protool and reset engine adaptations. Flashed and drove car for 30 minutes before log. Had cyl 6 misfire again at 6200 or so and super knock cyl 1 and 5.
I have a known good set of NGK 2 step colder plugs I plan to install to see if that cures the misfire...


Update... Swapped in the ngk 2 step plugs and car runs fine now. Always felt like it ran better on these plugs. Adaptations and fuel trims are beginning to get better better too.

https://datazap.me/u/jmadams/log-165...?log=0&data=21

Last edited by jadams161; 05-29-2022 at 06:20 PM..
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      05-29-2022, 02:36 AM   #5527
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I don't know why its not compatible. maybe the ame only does one but not both thermistors. ptc versus ntc. I just took it at face value and bought a new one for 20 bucks.

yes, its nice to have a tuning area.
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      05-30-2022, 07:40 AM   #5528
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Hi guys

I have some updated logs and I'm really concerned. 3rd gear pull looks ok but shifting into 4th I'm getting serious timing corrections. Up to -8 in cylinder 1 😲

How do my logs look?

E30 mix stage 2 plus.

https://datazap.me/u/boosty/large-ti...13-95-69-41-22
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      05-30-2022, 09:43 AM   #5529
Saif2018
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Quote:
Originally Posted by Spoolsport View Post
Hi guys

I have some updated logs and I'm really concerned. 3rd gear pull looks ok but shifting into 4th I'm getting serious timing corrections. Up to -8 in cylinder 1 😲

How do my logs look?

E30 mix stage 2 plus.

https://datazap.me/u/boosty/large-ti...13-95-69-41-22
Have you changed your plugs and coils?
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      06-01-2022, 02:02 AM   #5530
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Quote:
Originally Posted by Saif2018 View Post
Have you changed your plugs and coils?

Hi mate! Changing my coils and plugs tomorrow. Will see how it runs.
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      06-01-2022, 10:33 PM   #5531
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MHD stage 1 weird throttle closure

odd throttle closure when entering into boost if I start the car and drive it until it gets up to temp I can pull all the way through third gear no problems but as soon as I try to drive aggressively and not worry about what gear I'm in the throttle completely closes for a second and it causes a pretty violent jerk inside the car this has been an ongoing issue and I'm so confused why it started so randomly

car is a 2007 BMW 335i at stage 1 MHD and a injen cold air intake


attached is my log
https://*********************/graphs...,21&zoom=-1,73
[GRAPH attachment_id="69164" series="2,21" zoom="-1,73"][/GRAPH]

Last edited by brodybk1; 06-01-2022 at 10:34 PM.. Reason: forgot to link log
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      06-02-2022, 12:49 AM   #5532
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Quote:
Originally Posted by brodybk1 View Post
odd throttle closure when entering into boost if I start the car and drive it until it gets up to temp I can pull all the way through third gear no problems but as soon as I try to drive aggressively and not worry about what gear I'm in the throttle completely closes for a second and it causes a pretty violent jerk inside the car this has been an ongoing issue and I'm so confused why it started so randomly

car is a 2007 BMW 335i at stage 1 MHD and a injen cold air intake


attached is my log
https://*********************/graphs...,21&zoom=-1,73
[GRAPH attachment_id="69164" series="2,21" zoom="-1,73"][/GRAPH]
Can you post the Datazap.me link
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      06-02-2022, 07:14 PM   #5533
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Quote:
Originally Posted by Saif2018 View Post
Can you post the Datazap.me link
https://datazap.me/u/brodybk1/thrott...og=0&data=3-22
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      06-02-2022, 08:13 PM   #5534
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https://datazap.me/u/boosty/car-running-extremely-rough?log=0&data=3-5-7-9-12-21&solo=7-12&zoom=0-88&mark=56-23-38-57-26-41-81-83-24-44-78

Hi guys! Car is running extremely rough suddenly. Wgdc suddenly shot up and timing corrections galore.
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      06-03-2022, 02:23 AM   #5535
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Quote:
Originally Posted by brodybk1 View Post
1700rpm to reach boost target from WOT must feel really laggy. Could be your WG are shot. I've seen throttle closures on various v10 maps.

Have you got WG rattle or fix applied?

Can you flash v9 map and do a 3rd gear run from 2500rpm to 6000rpm WOT with DSC/DTC fully off. Post the log afterwards.

Last edited by Saif2018; 06-03-2022 at 02:29 AM..
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      06-03-2022, 02:33 AM   #5536
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Quote:
Originally Posted by Saif2018 View Post
1700rpm to reach boost target from WOT must feel really laggy. Could be your WG are shot. I've seen throttle closures on various v10 maps.

Have you got WG rattle or fix applied?

Can you flash v9 map and do a 3rd gear run from 2500rpm to 6000rpm WOT with DSC/DTC fully off. Post the log afterwards.
How did you get 1700 rpm on the log ?
I can see it takes around 850 rpm (3900 to 4750) which is ok is 2nd gear.
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      06-03-2022, 05:11 AM   #5537
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Quote:
Originally Posted by Spoolsport View Post
https://datazap.me/u/boosty/car-running-extremely-rough?log=0&data=3-5-7-9-12-21&solo=7-12&zoom=0-88&mark=56-23-38-57-26-41-81-83-24-44-78

Hi guys! Car is running extremely rough suddenly. Wgdc suddenly shot up and timing corrections galore.
If you gonna run Stage2+ you need to upgrade intercooler. Otherwise run the correct map.

See how it goes.

Last edited by TSilver335i; 06-03-2022 at 05:32 AM..
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      06-03-2022, 05:43 AM   #5538
Saif2018
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Quote:
Originally Posted by studio54 View Post
How did you get 1700 rpm on the log ?
I can see it takes around 850 rpm (3900 to 4750) which is ok is 2nd gear.
Your right my bad typo error, 850rpm is still laggy though, should be taking a lot less rpm especially if he's going WOT from 3900rpm,

How is it Ok, when on a 3rd gear run from 2500rpm it should take around 500 rpm. If you look at logs, by around 3000 rpm most are on target. (on most 3rd gear logs) but a 2nd gear log from 3900rpm taking 850rpm to reach target is normal?
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      06-03-2022, 07:33 AM   #5539
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Quote:
Originally Posted by Saif2018 View Post
Your right my bad typo error, 850rpm is still laggy though, should be taking a lot less rpm especially if he's going WOT from 3900rpm,

How is it Ok, when on a 3rd gear run from 2500rpm it should take around 500 rpm. If you look at logs, by around 3000 rpm most are on target. (on most 3rd gear logs) but a 2nd gear log from 3900rpm taking 850rpm to reach target is normal?
Okok

Yes, from 2500rpm in 3rd, around 500 rpm to reach at least 13psi is considered healthy (by MHD). In 4th gear it's shorter, maybe 300-400 rpm (in my car).

Automatically, in 2nd gear it will take more RPM, I think 850rpm might be ok even starting from 3900 rpm (especially not spooled like in the log).

The 2nd gear is a very fast gear, I would imagine reaching target in just 500 rpm from 2500 rpm, it will instant rip/spin tires or DSC will be crazy, and must be nice btw but I am pretty sure mine not reach target in 500 rpm in 2nd, more like 1000 rpm or more

I couldn't find a 2nd gear pull while digging in my datazaps, however a quick Google search gave me this result :

https://datazap.me/u/n54joe/2nd-gear...ta=2-3-4-12-21

https://datazap.me/u/blaze43090/2nd-...ta=2-3-5-13-21
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      06-03-2022, 11:36 AM   #5540
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Quote:
Originally Posted by studio54 View Post
Okok

Yes, from 2500rpm in 3rd, around 500 rpm to reach at least 13psi is considered healthy (by MHD). In 4th gear it's shorter, maybe 300-400 rpm (in my car).

Automatically, in 2nd gear it will take more RPM, I think 850rpm might be ok even starting from 3900 rpm (especially not spooled like in the log).

The 2nd gear is a very fast gear, I would imagine reaching target in just 500 rpm from 2500 rpm, it will instant rip/spin tires or DSC will be crazy, and must be nice btw but I am pretty sure mine not reach target in 500 rpm in 2nd, more like 1000 rpm or more

I couldn't find a 2nd gear pull while digging in my datazaps, however a quick Google search gave me this result :

https://datazap.me/u/n54joe/2nd-gear...ta=2-3-4-12-21

https://datazap.me/u/blaze43090/2nd-...ta=2-3-5-13-21
I would have thought 2nd gear would reach target in less rpm, especially if your going WOT in 2nd gear from 3k+ and yes it should be spin city WOT lol, if DSC is on it should definitely be flashing.

V9 log shows your pretty much on target by 3k,

I guess a 3rd Log by Brodybk1 would show if wastegates are slacking
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      06-03-2022, 11:44 AM   #5541
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Quote:
Originally Posted by Spoolsport View Post
https://datazap.me/u/boosty/car-running-extremely-rough?log=0&data=3-5-7-9-12-21&solo=7-12&zoom=0-88&mark=56-23-38-57-26-41-81-83-24-44-78

Hi guys! Car is running extremely rough suddenly. Wgdc suddenly shot up and timing corrections galore.
Can you try V9 map 3rd gear log from 2500 rpm to 6000rpm?

Looks like your FMIC might not be upto the job
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      06-03-2022, 12:15 PM   #5542
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Quote:
Originally Posted by Saif2018 View Post
I would have thought 2nd gear would reach target in less rpm, especially if your going WOT in 2nd gear from 3k+ and yes it should be spin city WOT lol, if DSC is on it should definitely be flashing.

V9 log shows your pretty much on target by 3k,

I guess a 3rd Log by Brodybk1 would show if wastegates are slacking
Yep, spool rpm range works the opposite way, like, let's say it takes 500 rpm to reach target in 3rd, it will take less in 4th cause it takes more time, but naturally it will take longer in 2nd, it's more about spooling times in reality, more or less it should around 1 seconds to reach target, but in term of rpm, 1 second in 3rd = 500 rpm, 1 second in 4th = 300 rpm, and 1 second in 2nd is very fast, maybe 1000 rpm passed easily
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      06-03-2022, 03:15 PM   #5543
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Quote:
Originally Posted by studio54 View Post
Yep, spool rpm range works the opposite way, like, let's say it takes 500 rpm to reach target in 3rd, it will take less in 4th cause it takes more time, but naturally it will take longer in 2nd, it's more about spooling times in reality, more or less it should around 1 seconds to reach target, but in term of rpm, 1 second in 3rd = 500 rpm, 1 second in 4th = 300 rpm, and 1 second in 2nd is very fast, maybe 1000 rpm passed easily
I'd like to see a WOT 2nd gear log prove this theory. Especially from around 3k+

Your theory might be true if you were going WOT from 2500rpm in each gear and comparing, but I'm pretty sure the higher rpm you go WOT at in a gear the quicker it should reach Boost target,

Last edited by Saif2018; 06-03-2022 at 03:38 PM..
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      06-03-2022, 03:37 PM   #5544
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Quote:
Originally Posted by Saif2018 View Post
I'd like to see a WOT 2nd gear log prove this theory. Especially from around 3k
Do it

and then :

https://datazap.me/u/n54joe/2nd-gear...ta=2-3-4-12-21

https://datazap.me/u/blaze43090/2nd-...ta=2-3-5-13-21[/QUOTE]
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