Guide to Logging your BMW

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This video explains how to log your car and read the data using multiple BMW Tuner platforms.
The website I use for reviewing logs:
datazap.me/
Recommended Logging Parameters:
Accelerator Pedal Position
Throttle Angle
Engine Speed
Boost Pressure (Target)
Boost Pressure (Actual)
WGDC
Intake Air Temperature
AFR/Lambda (Target)
AFR/Lambda (Actual)
Ignition Timing (Target)
Ignition Timing #1 (Actual)
Ignition Timing #2 (Actual)
Ignition Timing #3 (Actual)
Ignition Timing #4 (Actual)
Ignition Timing #5 (Actual)
Ignition Timing #6 (Actual)
Ignition Timing #1 (Correction)
Ignition Timing #2 (Correction)
Ignition Timing #3 (Correction)
Ignition Timing #4 (Correction)
Ignition Timing #5 (Correction)
Ignition Timing #6 (Correction)
HPFP Pressure (Target)
HPFP Pressure (Actual)
LPFP Pressure (Target)
LPFP Pressure (Actual)
LFTF
STFT
Knock Detected
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[@kern417]

Order your discounted BMW parts through my BimmerNetwork Affiliate Link (Coupon Code "kern417"): www.bimmernetwork.com/?afmc=kern417&

[@llkjjjss]

Dude you are a bad ass. This channel needs more subs!

[@kern417]

I really appreciate the support man

[@aarondostou3888]

Learning about logs is a great bedtime story

[@qx4n9e1xp]

Same!! I really should get some sleep, lolol.

[@alexvalencia9869]

Damn man I love your videos! I learn so much from them. You actually helped me with recognizing a throttle closure by looking at one of my logs. Scary feeling when you have no idea what it is or why it happened but now it makes a lot more sense! 👍🏽👍🏽

[@Ultrabenbooyah]

thanks man. you're legit the first channel I'm turning on notifications for. greetings from germany.

[@kern417]

Glad to help, and I really appreciate the support

[@unirapide7726]

Never really knew what fuel trims were about, so thanks for explaining!

[@chrishayes5996]

Super helpful and informative as always! I’ve learned more from you about this platform than anyone. Thank you.

[@WORM1100]

This is the explanation I"ve been looking for. Awesome video, Thanks for sharing!

[@itswhip]

Great video! Perfectly explained what I needed to know. Now, to find that stretch of road where I can take 5th gear to redline...

[@kern417]

if all else fails, lower gears work too (as long as you have traction)

[@robertbeaumont9722]

Thank you Kevin. Car fell off warranty and just starting the Tuning process. BM3. Likely will take you up on your offer to review logs if there is something I do not understand.

[@jeremeeknight8993]

Great video, thank you! By far the most through and clearly explained logging video I've watched. Just subscribed to your channel 👍

[@JohnUnnever]

Thank you very much, just what I was looking for!

[@LuizPauloDT]

Great video, very informative. Ijust got started into tuning my B58. I leaning towards either MHD or BM3, OTS Stage 2 93. I have been learning a lot from you. Thank you very much Sir! (:

[@ajc2100]

Amazing video. Super helpful.

[@conconstantinou2890]

Hey buddy great work, explained every parameter very well. Very helpful video

[@kunkkarsa5704]

Very informative! Highly appreciate the video

[@javidm76]

Awesome video. It was really helpful for me.

[@jeremytownson1101]

Really fantastic video. Opens up a subject clearly that is normally shrouded in fog and seen in mirages. Btw, what are the wheels on the car to the right of shot?

[@kern417]

They're called Volkswagen Racingline (VWR). They're more or less the same as Team Dynamics Pro Race 1.2.

[@kwon-tobi]

비디오 감사합니다. 2022 bmw m240i에 jb4를 장착했고 map2로 운행하고 있어요. 조만간 bms의 wmi를 추가하려고 하는데 로그를 읽고 이해할 수 없어서 비디오를 보고 공부해보려 했는데 역시니 어렵네요. 😅

[@phoenixflyz_]

I love this video. Thank you so much.

[@vladurs6475]

keep up with these kind of videos ! great job

[@kern417]

Thank you

[@Dutch79]

I checked the available parameters in MHD for my E-N55, but cannot find 'knock detection'. Should that be availaible to logging??

[@EEEE36M3]

Thanks! Very informative!

[@masonleibel9288]

Hey, just found your channel and the way you structure and deliver information is great; extremely helpful! What is your preferred software and hardware for data logging? I bought a 2018 440i with MPPSK recently with around 70k km (45k miles). Yesterday I had a situation where power was cut significantly around 5,500 rpm at wot; from there the power would increase a bit before dropping off repeatedly as the tach climbed upward from 5.5k to 7k rpm like the fuel is being cutoff. The car is not backfiring or running roughly, and there is no hint of anything being wrong when operating below 5k rpm. I left the car overnight, and this morning the issue was still happening but not nearly as pronounced. I think this may be exasperated by ambient temp as yesterday the temp outside when the issues began was over 30C (90F) and this morning the outside temp was 17C (63F). I believe the car does not have an aftermarket tune and only has the BMW's MPPSK tune, but cannot be sure as I bought it used, and I know the previous owner did some coding in the car as it remembers my auto start/stop settings from my last drive rather than defaulting to on when I start the car. Hoping this is something simple like a bad o2 sensor, but I need to run logs so I can narrow down the fault before throwing any parts at it. I do have a veepeak Bluetooth/wifi obd2 adapter for my phone, so I am hoping to use that to run the logs, but if it doesn't have enough bandwidth to pull enough relevant info, I'll buy better hardware. Was just hoping to get your opinion before I start throwing money at the car.

[@hunterbean9507]

"slight flex" im dead lmaooo

[@kern417]

😅

[@AZESCREAM]

Thank you!!! You are life saver bro

[@rogervip888]

Great video!

[@tylorakahori2757]

How can I send you my data log to check out?

[@danielwro1]

I'm about to upgrade my downpipe to sport one (300CEL, and from what the manufacturer says - that not throwing a CEL). What I read, it has positive impact on EGT.. So am I correct to measure those 2 lambdas in the downpipe (before and after cat)? But how can I read the temp. instead of AFR? What other params you suggest to measure before and after downpipe upgrade? Thank you Sir!

[@vividmotion66]

Thanks a lot!

[@suspect3539]

Great explanation. Would running a piggyback like a JB4 then completely eat up safety margins? If I understand piggybacks correctly, they basically just modify what the DME sees for the actuals which causes compensation in the form of higher boost/fuel/timing...correct? E85 isn't impossible to find here, but it's a bit of a pain to get (~25mi drive to the nearest station with it), so I was thinking going the WMI route at some point, but that comes with it's own set of problems.

[@agdwhite5421]

Really man, a big thank you. That is high value info! Do you mind if i ask you what a think its basics about ms42 tunning? Like how much Knock voltage is acceptable or how much advance retard due to knock its acceptable? I am new at tunning and slowly diving into it, every tip is gold to me

[@collinchodkowski3808]

Slight flex lol. Good video man thanks.

[@gwspom]

@kern417 Concerning STFT/LTFT: Why is there in general a deviation from the baseline fuel mapping (up to +/-10%)? In my case, my B58 first starts at around +10% at 3,000rpm and decrease until -3% towards redline (STFT). LTFT is 0,45. That doesn't fit in my eyes, but it was all the last months like this. I would have expected 0 for the whole rev range, because the baseline should be coded like the real demand along the full rev range.

[@kern417]

it varies based on conditions

[@iRitser]

Great video, as usual. I've logged a run with my 340i and I see timing corrections. I've sent you an email with the log, it would be awesome if you could take a look at it and see what you would do. Thanks a lot!

[@sphinxore4499]

lol

[@willm2624]

Are you a certified bmw mechanic? Your knowledge on the B58 is insane. Do you do custom tuning? Interested in going over a few things, do you have a contact email? Thanks for your time in doing these videos.

[@kern417]

I'm not and I don't do custom tuning. Just an enthusiast that does a lot of research and likes to know how things work. You can email me at [e-mail] or message me on my Instagram @kern417.

[@trapgodnah9022]

Where do you get animated waste gate videos from😂, those small parts make the video better tho💯

[@kern417]

I snatch em like T.I.

[@vividmotion66]

How can I make a full gear load starting in low rpm all the way up? My BMW transmissions always gears down automatically, even in manual/sport.

[@kern417]

you probably have a kickdown button under the pedal. don't push it

[@vividmotion66]

@@kern417 might be it :) I’ll check that

Teşekkürler.

[@kern417]

Thank you 🙏🏾

[@itswhip]

Is accel. pedal% and throttle angle% supposed to be close together? If not, I think I've found what's causing this "miss" feeling I'm having. Sometimes the throttle angle jumps up to 99% when I'm at 45% on the accelerator, sometimes it dips way down while the accelerator % is a flat line. Started doing it after I installed RaceChip and hasn't gone away after removing it. Currently running BM3 stage 1 93oct. Anybody ever see something like this?

[@kern417]

it's all based on the tune's throttle mapping, and unfortunately no tune has throttle mapping as well-defined as the stock tune. if you want it to be linear then you'll need a custom tune from a tuner that can put more time into dialing it in.

[@dj4540]

Hey, I live in NYC, can't really find a place to hit that kinda speed. I did however do a few 3rd gear pulls to redline with a shift to 4th for a short time at WOT. Any chance anyone would be willing to take a look at a log? I don't see a lot of things talked about here in datazapme. I have MHD stage 2+ running 95 in these logs.

[@kern417]

Message me on Instagram or Facebook

[@Conservator.]

2:45 I wonder how this was recorded. Must have been on a dyno. Can’t image someone holding his phone in one hand and accelerating to some 185Mph. 🙄

[@kern417]

what kind of maniac would do that

[@lokisgr]

Could you also by 100% ethanol and mix it with 91?

[@kern417]

Yes, just adjust your mix calculation appropriately.

[@joaodc3]

which cable and program to read?

[@kern417]

You can use whatever tuning software you have. Bootmod3, MHD, JB4, MG Flasher, etc

[@trapgodnah9022]

How do i share/upload files to mhd

[@kern417]

You'll need to upload the log .csv file to datazap

[@manthatspeakstruth5402]

What state are located??

[@kern417]

Ohio