[M2C]

Looking good. Should be around 460 bhp.

[Skyhigh]

Agree it looks good. Nothing that you should be worried about, but don't forget to log again when the weather gets warm. You may see different behaviour.
With this OTS map, I'd say 450PS is what you can hope for, realistically.

[F21M140iB58]

I am running a Stock M140i and I chasing an issue regarding power. In 100-200 kph measurements my car seems a bit slow, always running mid to high 12s.

So I fear that I am missing some power, car pulls fine without hesitation, but I would like some experienced opinion on a log before I start flash tuning the car.

If anyone notices anything please let me know: https://datazap.me/u/f21m140ib58/100...?log=0&data=22

I would say the MAF value seems a bit low for stock 340HP...

[Skyhigh]

The only thing I notice that stands out is your exhaust vanos! Don't think it should be that "nervous", but I am no expert... Believe to have read/watched that this is a sign of a bad vanos, but don't take my word for it - just investigate. See how much smoother your other vanos is.

The other thing is that your boost dropped mysteriously in 6th gear? I am sure that has some explanation though....

[F21M140iB58]

Yeah, exhaust VANOS is a bit messy, but I haven't heard that that would affect peak power though.
I think I will change the VANOS module soon. Not that expensive and doable DIY.

Boost Drop in 6th gear is actually because of speed limiter at 250kph.
And it seems that the log got stuck at 6th gear, even though I went up to 8th...

[Skyhigh]

That’s what I thought too, that it may be the speed limiter. Anyway no need to drain all gears - 4th gear log would suffice. Or 3rd and 4th.

[Eraaz]

Hello Guys and thank you for all the reviews you are doing

Can you give me a feedback of my logs please ?
https://datazap.me/u/eraaz/m140i-2nd...og=0&data=4-19
There is 2 logs on this one 2nd gear and 3rd gear in E85 and only HDP6 hpfp

The one on the second gear scares me a little

Thanks in advance

[Skyhigh]

Originally Posted by F21M140iB58

Yeah, exhaust VANOS is a bit messy, but I haven't heard that that would affect peak power though.
I think I will change the VANOS module soon. Not that expensive and doable DIY.

Boost Drop in 6th gear is actually because of speed limiter at 250kph.
And it seems that the log got stuck at 6th gear, even though I went up to 8th...

I actually compared to a freshly taken log of mine and the VANOSes don't look much different... the exhaust one seems to often be a bit more "nervous" than the intake (based on other logs too) and it really depends on whether you visualise both the intake and exhaust ones simultaneously or just the exhaust - it looks much more off if you just look at exhaust, due to the scaling, than if you look at both at the same time.

[F21M140iB58]

Originally Posted by Skyhigh

I actually compared to a freshly taken log of mine and the VANOSes don't look much different... the exhaust one seems to often be a bit more "nervous" than the intake (based on other logs too) and it really depends on whether you visualise both the intake and exhaust ones simultaneously or just the exhaust - it looks much more off if you just look at exhaust, due to the scaling, than if you look at both at the same time.

Thank you for the update!
I will probably do the VANOS solenoids either way. Today I found out that the coupler of my chargepipe seems to be leaking (Similar to what I found in this post: https://f30.bimmerpost.com/forums/sh....php?t=1950440)

So aftermarket chargepipe will be first thing to fix. I might try to just replace the stock silicone coupler.

[fixmefixmyhead]

I just installed an ARM catless downpipe and flashed MHD stage 2 yesterday. Did 2 logs today in 4th gear. This is my first time doing logs and am not very good at reading them. I do notice the boost is much higher than target boost. Can somebody take a look and tell me if my logs look ok?

2019 440i xdrive. I'm at sea level and 37 degrees outside. 55k miles. Car has new plugs and a muffler delete are the only other mods.

https://datazap.me/u/fixmefixmyhead/...og=0&data=3-20

[TunaFlapjack]

Originally Posted by M2C

Looking good. Should be around 460 bhp.

Nice one thanks for checking them out

[TunaFlapjack]

Originally Posted by Skyhigh

Agree it looks good. Nothing that you should be worried about, but don't forget to log again when the weather gets warm. You may see different behaviour.
With this OTS map, I'd say 450PS is what you can hope for, realistically.

Better get saving for that Pure800 thanks again for looking at the logs.

[DieselDuck]

Little healthcheck of the car

mhd stage2+ e40 with tu hpfp

https://datazap.me/u/zd/log-17069651...45-46-47-48-49

https://datazap.me/u/zd/log-17069652...45-46-47-48-49

In the first pull I see the hpfp dipping and then overshooting bit, second pull overshooting a little bit too. I do put a bit more than 40% ethanol content in the car, probably I'm more around E50 to E55, could that be it ? Fuel trims seem fine.

[DieselDuck]

Originally Posted by DieselDuck

Little healthcheck of the car

mhd stage2+ e40 with tu hpfp

https://datazap.me/u/zd/log-17069651...45-46-47-48-49

https://datazap.me/u/zd/log-17069652...45-46-47-48-49

In the first pull I see the hpfp dipping and then overshooting bit, second pull overshooting a little bit too. I do put a bit more than 40% ethanol content in the car, probably I'm more around E50 to E55, could that be it ? Fuel trims seem fine.

To answer my own question, iirc max angle of the hpfp is 126 and the moment it dips it is indeed at 126 (msv duration after pi), guess I'll put a a bit less of E85.

[DieselDuck]

Originally Posted by fixmefixmyhead

I just installed an ARM catless downpipe and flashed MHD stage 2 yesterday. Did 2 logs today in 4th gear. This is my first time doing logs and am not very good at reading them. I do notice the boost is much higher than target boost. Can somebody take a look and tell me if my logs look ok?

2019 440i xdrive. I'm at sea level and 37 degrees outside. 55k miles. Car has new plugs and a muffler delete are the only other mods.

https://datazap.me/u/fixmefixmyhead/...og=0&data=3-20

Looks good, your boostprofile is fine. You need more octane though as you have some corrections mid range. Either try better quality fuel or flash a lower octane map (91oct/95ron stage2) instead as that might fix it.

[WrxToBeamerGuy]

Originally Posted by DieselDuck

To answer my own question, iirc max angle of the hpfp is 126 and the moment it dips it is indeed at 126 (msv duration after pi), guess I'll put a a bit less of E85.

Yep! Hitting 126 indicates that you are maxed out on fueling for the HPFP and that the rail pressure will begin to dip.

[ohfr]

Hoping someone could help me out. Suspecting some issues in cylinder 1. ( randomly throws a misfire )

MHD stage 2
93 octane
VSRF catless downpipe

Appreciate any insight !
https://datazap.me/u/ohfr/2nd-pull?log=0&data=3-7-8-20

[Skyhigh]

A misfire recorded as a fault code? CEL?

[ohfr]

Originally Posted by Skyhigh

A misfire recorded as a fault code? CEL?

Yeah every once in a while after a pull it will throw a CEL for misfire on cyl 1, did fresh plugs and PCV. Didn’t see signs of injector stuck as plug wasn’t wet. So I’m curious if my STFT and timing corrections are normal.

[ClintBeastwood]

Log check please

https://datazap.me/u/clintbeastwood/...og=0&data=5-25

F36 440i
Daw Flowmax V2.5+
Dorch DS25
Downpipe
MST intake with proram filter
MPPSK
Reflex+
Port injection
Stage 3 LPFP
PCV delete
Custom Tune through MHD
Sutphin trans tune
E68 fuel

[Skyhigh]

Originally Posted by ohfr

Hoping someone could help me out. Suspecting some issues in cylinder 1. ( randomly throws a misfire )

MHD stage 2
93 octane
VSRF catless downpipe

Appreciate any insight !
https://datazap.me/u/ohfr/2nd-pull?log=0&data=3-7-8-20

Sorry for the late response. There are a few things going on there, but your log is not good enough to draw conclusions. Please pull a proper log, WOT from about 2500 RPM all the way to about 6500, 3rd or 4th gear.

What fuel are you using? Looks insufficient octane for the map.

[ohfr]

Originally Posted by Skyhigh

Sorry for the late response. There are a few things going on there, but your log is not good enough to draw conclusions. Please pull a proper log, WOT from about 2500 RPM all the way to about 6500, 3rd or 4th gear.

What fuel are you using? Looks insufficient octane for the map.

No worries just happy to have feedback. I’m using 93 octane. Here’s a 3rd gear WOT, it threw a code around 6k rpms.
https://datazap.me/u/ohfr/3rd-gear-wot?log=0&data=3-20

I have since dropped the map to a 91 map but feel like something is not right.