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      08-22-2021, 11:20 AM   #2003
qaaq
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MHD stage 2, 98Ron, hjs downpipe, 4th gear floored. Should i be worried about these timing corrections?

https://datazap.me/u/qaaq/log-162964...-45-49&mark=32
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      08-22-2021, 01:47 PM   #2004
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Quote:
Originally Posted by qaaq View Post
MHD stage 2, 98Ron, hjs downpipe, 4th gear floored. Should i be worried about these timing corrections?

https://datazap.me/u/qaaq/log-162964...-45-49&mark=32
cylinder 6 has the most corrections, most timing problems is due to little octan ( first try to put some ethanol in your tank , for full tank around 5 liters ) and log again to see if things improve , next step is to check sparks if timings should not improve.. make a new log and post again
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      08-25-2021, 07:55 PM   #2005
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Originally Posted by Fodase View Post
After putting in a new VTT GC turbo and running an MHD OTS stage 1 91 octane map I've run my first datalog.

At some point I do want to run a custom map for the new turbo, but I would appreciate any thoughts on how the numbers look and whether I should be in a rush for the new tune.

Thanks!

It's about 80*F and I started on an on-ramp and ran through 3rd gear.


https://datazap.me/u/jtomson/3rd-gea...-24-25-26&hg=3
I have a friend that has a highly tuned Stealth (I think he's over 1k hp now) and his concern was the AFRs in my log. His thought was that anything over 12.5 would spell doom for a turbo engine. I've looked at a few other logs here and it seems to be in line. Is he over conservative or should I be concerned?

Also, I mentioned putting some E85 or octane boost to help with my timing and he thought I would cause a worse problem with high EGTs.

Any thoughts?
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      08-28-2021, 04:15 PM   #2006
heyitsbrandon
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I have to be honest in saying that I have no idea how to properly read these logs. I have spent a few hours searching around forums, and I was reluctant to find the information that I was looking for.

The car is a 2017 340i. 8HP Trans
39k miles.
MHD Super License
Brand new Champion spark plugs *stock gap*
BMS Intake
VRSF Catless DP
Exxon 93 Octane fuel. No additives used.
Transmission & Engine oil just serviced with Amsoil

I just installed all of the above mods ~200 miles ago. From what I can tell, the car runs great. My concern is that from what I am seeing in forums, I am supposedly not supposed to have more than a 3 degree timing correction on more than 3 cylinders, but from what I am able to decipher from these logs, I am having a lot of corrections, & my timing delta for knock is straying too far from 0

If this is indeed an issue, my first guess is to regap the spark plugs, or go 1 step colder, gap, and relog. Can anyone please confirm or tell me if I am being a hypochondriac?

I downstepped from stage 2 to stage 1 - 91 octane (While using 93 in tank) to see if that would be a sufficient buffer. From what I can see, didn't help.

Then out of caution, I went back to stage 0 until I can get some feedback from someone knowledgeable. I only notice one minor correction on cyl 2 now while in Stage 0

I hope these logs are sufficient.

Stage 0 Pull 1
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 0 Pull 2
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 1 Pull
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 1
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 2
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 3
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 4
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Last edited by heyitsbrandon; 08-28-2021 at 04:21 PM..
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      08-29-2021, 01:48 AM   #2007
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https://datazap.me/u/2016340i/stage-...43-44-45-49-50

Please check this out
2016 340 stage 1 93 octane
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      08-29-2021, 02:34 AM   #2008
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Quote:
Originally Posted by heyitsbrandon View Post
I have to be honest in saying that I have no idea how to properly read these logs. I have spent a few hours searching around forums, and I was reluctant to find the information that I was looking for.

The car is a 2017 340i. 8HP Trans
39k miles.
MHD Super License
Brand new Champion spark plugs *stock gap*
BMS Intake
VRSF Catless DP
Exxon 93 Octane fuel. No additives used.
Transmission & Engine oil just serviced with Amsoil

I just installed all of the above mods ~200 miles ago. From what I can tell, the car runs great. My concern is that from what I am seeing in forums, I am supposedly not supposed to have more than a 3 degree timing correction on more than 3 cylinders, but from what I am able to decipher from these logs, I am having a lot of corrections, & my timing delta for knock is straying too far from 0

If this is indeed an issue, my first guess is to regap the spark plugs, or go 1 step colder, gap, and relog. Can anyone please confirm or tell me if I am being a hypochondriac?

I downstepped from stage 2 to stage 1 - 91 octane (While using 93 in tank) to see if that would be a sufficient buffer. From what I can see, didn't help.

Then out of caution, I went back to stage 0 until I can get some feedback from someone knowledgeable. I only notice one minor correction on cyl 2 now while in Stage 0

I hope these logs are sufficient.

Stage 0 Pull 1
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 0 Pull 2
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 1 Pull
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 1
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 2
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 3
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 4
https://datazap.me/u/brandonwinkler/...og=0&data=5-23
you made the logs the same time ? , your car has to adopt a bit, but overall it does not look that bad. as always at stage 2 you have to add some more octane to run a better timing , the B58 loves octane !!!
( try add some ethanol , timing should improve then , around 3-4 liters , drive 30 min and log again )

greets, Patrick
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      08-29-2021, 05:26 AM   #2009
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nothing wrong with the logs
you are running in high ambient temp so its normal to have corrections .
if you cant live with that , run e30 .
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      09-07-2021, 03:24 PM   #2010
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Quote:
Originally Posted by alyabiev View Post
In basic terms:
P-factor
Instant WGDC correction for given boost error. Boost error = actual boost - target boost.

I-factor
WGDC correction applied during boost error occurance. The longer the error time period is the more I-factor would be.

D-factor
WGDC correction based on boost error gradient. If boost error is decreasing rapidly (spool up) D-factor will gradually decrease WGDC.


For example you are drving the car and you need to accelerate to 60mph:

Base WGDC
- how much to press gas to reach 60mph in a straight road.

If the road was staright you could use only this base value, but for now you are going uphill, so you need some kind of gas pedal input correction for given circumstances. Here the PID control goes:

P-factor - you press gas more to accelerate faster.
I-factor - you are seeing that speed is still not reached so you press gas further and further for longer periods of time.
D-factor - you are approaching 60mph so you let off gas slightly or even use brakes to not overshoot your desired speed.
Your academic work is amazing. Can you tell me what corresponds to the x axis in the compressor table? I know that the Y-axis is the exhaust flow. But I can't find a coefficient to convert it to.


q
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      09-07-2021, 04:10 PM   #2011
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Can someone please check my log on my

2017 340xi Stage 2 mg flasher e30
Catted vrsf downpipe

https://datazap.me/u/gotemf30/mg-sta...&data=2-4-7-15
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      09-09-2021, 02:09 AM   #2012
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Quote:
Originally Posted by GotEmF30 View Post
Can someone please check my log on my

2017 340xi Stage 2 mg flasher e30
Catted vrsf downpipe

https://datazap.me/u/gotemf30/mg-sta...&data=2-4-7-15
looks good for me
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      09-10-2021, 01:33 PM   #2013
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Quote:
Originally Posted by kriszty View Post
looks good for me
Appreciate it! No issues at all? No timings or anything
I did end up getting a lpfp code "11A030 - Low-pressure fuel system, electric fuel pump, adaptation: Adaptation value outside valid range."

New log : https://datazap.me/u/gotemf30/stage-2?log=0&data=8-15

Last edited by GotEmF30; 09-10-2021 at 05:17 PM..
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      09-10-2021, 06:53 PM   #2014
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hi guys, back again this time (finally!) with a pure 800 upgrade (dorch stg 1, catless) on RON 98 from Shell pump. Car is still the 340i RWD with MPPSK.




ron98 (Shell)
https://www.bootmod3.net/log?id=613b...90c66afb411fab

ron98 (Shell) with a few liters of ethanol added.
https://www.bootmod3.net/log?id=613b...729b425bc613a2


Should i be worried about the corrections in the first log? I did notice they all disappear as soon as octane goes up by adding some ethanol.
I'n considering a little charge pipe WMI to get the octane up a little and cool things down, instead of adding eth in the tank. Would that be a better path to walk or is adding ethanol on longer term better?

Last edited by sultan340; 09-13-2021 at 05:43 PM..
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      09-15-2021, 08:09 PM   #2015
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BM Stage 2+ 93 OCT LOGS (09.15.2021)

Getting timing pull on both of these logs this morning and not sure why .... could be crappy gas or spark plug gap?? The timing corrections are sporadic and not consistent so thinking its the gas .... please help a brother out!

I'm running PetroCanada 94 Octane with NGK 94201 Plugs @ "0.024 ... thoughts????

https://datazap.me/u/talontd911/stag...7&tmax=6052.00
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      09-16-2021, 05:29 AM   #2016
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considering your high iats and pumpfuel its normal , everyone has it running mhd or bm3 or else . in short nothing to worry about , if you want them away add ethanol
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      09-18-2021, 04:44 AM   #2017
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https://datazap.me/u/enemigo/f30-340...13-15-17-18-19

stage2+ (B58TU hpfp, stock turbo) E30, 5th gear, tuned by me.

Last edited by enemigo13; 09-18-2021 at 04:54 AM..
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      09-20-2021, 01:06 PM   #2018
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2018 340i xDrive, Auto, BMS intake, VRSF Catless Downpipe, BM3 E30 stage 2

https://datazap.me/u/340mang/log-163...&data=3-7-9-10

This was after adding a few gallons of E85 after seeing timing corrections. I think the E30 blender pump wasn't hitting e30. Corrections are gone. Is the HPFP drop starting around 5000 rpms normal?
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      09-21-2021, 04:52 AM   #2019
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Quote:
Originally Posted by JD11937 View Post
I also have the dorch stage 2 on a custom tune and my tuner told me to select the oem option otherwise his hpfp settings would be copied over by the mhd settings.

I also have some spikes in rail pressure but it only occurs for a moment on shifts.
thanks man! Did this with Dorch and my Tuner (Odin). Now cars drives perfectly. Reached my best times on E30. 3,23s in 0-100km/h and 6,31s in 100-200. 1/4 mile best 10,72 seconds. I think itís really good for G30 540ix.
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