E90Post
 


Coby Wheel
 
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



Reply
 
Thread Tools Search this Thread
      12-11-2021, 03:23 PM   #5171
Quick335XI
First Lieutenant
Quick335XI's Avatar
105
Rep
311
Posts

Drives: 2010 335xi
Join Date: Dec 2017
Location: Dallas

iTrader: (0)

Frustrated!

We've been trying to tune my car for months now; the latest is, the trim values look decent now, but for some reason on cylinder #4 it consistently is pulling alot of timing. Sometimes, around 5500rpm, I'll hear a "fluttering" or grinding noise, then I'll get a superknocking code - but what's very weird is, code says superknocking on cylinder SIX. smh

I had my plugs pulled not long ago and they looked absolutely pristine, no signs of any knocking, rich, lean, nothing. Does anyone know what this sound is? I've never had a car superknock before so I'm not sure if that's actually what it is, or that's the sound of the computer retarding the timing.

With other tunes we tried, other cylinders were pulling timing and #4 was ok. Very weird, and very frustrating. Also, i had index 12 injectors put in about a year ago.

https://datazap.me/u/terryeaton/log-...og=0&data=3-21

ANy ideas what is going on here??!? The motor has about 15k on it, and it has JE forged pistons, steel rods the whole 9 yards, it should be able to take 35psi for sure.
__________________
2010 335XI, Carillo Steel rods, JE pistons, Closed Deck, Stage 4 race heads, 6mt, Pure Stage 2 High Flows, B58 Coils, VRSF|Vu Brothers (Ft Worth, TX)|JSRTuning,

https://youtube.com/channel/UC_kL3RvFSGv9QmTVt6787gg
Appreciate 0
      12-11-2021, 04:31 PM   #5172
Saif2018
Brigadier General
972
Rep
3,219
Posts

Drives: E90 335i
Join Date: Jan 2019
Location: UK

iTrader: (0)

Quote:
Originally Posted by tej98 View Post
Thanks! Yeah, I reset adaptations and ensured that all the injector flow rates are coded properly (I used INPA). It was my understanding that official guidance from BMW was to keep each bank either on all index 11/12, or they could mix indexes as long as they were below 11.

I currently have bank one with all index 12s and bank two with two index 5s and one index 6.

I pulled another log after resetting lambda adaptations and have the exact same results. The maximum difference in STFTs between banks is ~13%, with bank one at 18% and bank 2 at 5%. AFRs are still steady at ~12 for both banks.

Do the trims max out at 34%? If so, I'd think there should be plenty of headroom for fluctuation by the DME if needed. Or is that generally not enough?

Thanks!
Yes they max out +/- 34% of I recall correctly.

Have you swapped the injectors round to see if STFT follow?
Appreciate 0
      12-11-2021, 05:49 PM   #5173
Sgop335
Colonel
Sgop335's Avatar
United_States
645
Rep
2,005
Posts

Drives: 07 335i e92, 08 535i
Join Date: Jun 2014
Location: MD

iTrader: (1)

Quote:
Originally Posted by Quick335XI View Post
We've been trying to tune my car for months now; the latest is, the trim values look decent now, but for some reason on cylinder #4 it consistently is pulling alot of timing. Sometimes, around 5500rpm, I'll hear a "fluttering" or grinding noise, then I'll get a superknocking code - but what's very weird is, code says superknocking on cylinder SIX. smh

I had my plugs pulled not long ago and they looked absolutely pristine, no signs of any knocking, rich, lean, nothing. Does anyone know what this sound is? I've never had a car superknock before so I'm not sure if that's actually what it is, or that's the sound of the computer retarding the timing.

With other tunes we tried, other cylinders were pulling timing and #4 was ok. Very weird, and very frustrating. Also, i had index 12 injectors put in about a year ago.

https://datazap.me/u/terryeaton/log-...og=0&data=3-21

ANy ideas what is going on here??!? The motor has about 15k on it, and it has JE forged pistons, steel rods the whole 9 yards, it should be able to take 35psi for sure.
What plugs, gap and coils?
The obvious check is w lower timing and or boost to see if this changes. The noise could be detonation but why cyl 6 is not correcting?
__________________
335i e92 TPC 19Ts
Appreciate 0
      12-13-2021, 07:45 AM   #5174
Quick335XI
First Lieutenant
Quick335XI's Avatar
105
Rep
311
Posts

Drives: 2010 335xi
Join Date: Dec 2017
Location: Dallas

iTrader: (0)

Quote:
Originally Posted by Sgop335 View Post
What plugs, gap and coils?
The obvious check is w lower timing and or boost to see if this changes. The noise could be detonation but why cyl 6 is not correcting?
Hi,

Plus are NGK 97506 gapped to .018, changed a couple months ago. The old ones were pristine, barely any sign of use and had been in the car for almost a year.

As for changing the timing and such, what's weird is, I did four pulls yesterday; they all had very little timing pulls except one, and I don't even think that's the one I got the superknocking code on. Trims look good now, etc And again it said superknocking on #6 when #6 has 0 timing pull. So frustrating! Here's ac ouple more logs from yesterday:

https://datazap.me/u/terryeaton/log-...og=0&data=3-21

https://datazap.me/u/terryeaton/log-...og=0&data=3-21

I'm not sure if that fluttering sound is "actual" knock, or the computer/car retarding the timing. If it's not real knock, maybe I should dsensitize the knock tables or something? Not sure
__________________
2010 335XI, Carillo Steel rods, JE pistons, Closed Deck, Stage 4 race heads, 6mt, Pure Stage 2 High Flows, B58 Coils, VRSF|Vu Brothers (Ft Worth, TX)|JSRTuning,

https://youtube.com/channel/UC_kL3RvFSGv9QmTVt6787gg
Appreciate 0
      12-13-2021, 07:50 AM   #5175
tej98
Private First Class
tej98's Avatar
68
Rep
156
Posts

Drives: '09 335i
Join Date: Feb 2021
Location: GA

iTrader: (0)

Quote:
Originally Posted by Saif2018 View Post
Yes they max out +/- 34% of I recall correctly.

Have you swapped the injectors round to see if STFT follow?
I haven't swapped the injectors around yet. Am I correct in thinking that if the trims are not maxed out in either direction they should be fine? In my specific case it seems even with bank 1 around 20% that should leave enough headroom for adjustments?

Thanks!
Appreciate 0
      12-13-2021, 10:15 AM   #5176
Saif2018
Brigadier General
972
Rep
3,219
Posts

Drives: E90 335i
Join Date: Jan 2019
Location: UK

iTrader: (0)

Quote:
Originally Posted by tej98 View Post
I haven't swapped the injectors around yet. Am I correct in thinking that if the trims are not maxed out in either direction they should be fine? In my specific case it seems even with bank 1 around 20% that should leave enough headroom for adjustments?

Thanks!
Yes but not ideal.

Tuning adjustments should help.
Appreciate 1
tej9868.00
      12-13-2021, 03:23 PM   #5177
Sgop335
Colonel
Sgop335's Avatar
United_States
645
Rep
2,005
Posts

Drives: 07 335i e92, 08 535i
Join Date: Jun 2014
Location: MD

iTrader: (1)

Quote:
Originally Posted by Quick335XI View Post
Hi,

Plus are NGK 97506 gapped to .018, changed a couple months ago. The old ones were pristine, barely any sign of use and had been in the car for almost a year.

As for changing the timing and such, what's weird is, I did four pulls yesterday; they all had very little timing pulls except one, and I don't even think that's the one I got the superknocking code on. Trims look good now, etc And again it said superknocking on #6 when #6 has 0 timing pull. So frustrating! Here's ac ouple more logs from yesterday:

https://datazap.me/u/terryeaton/log-...og=0&data=3-21

https://datazap.me/u/terryeaton/log-...og=0&data=3-21

I'm not sure if that fluttering sound is "actual" knock, or the computer/car retarding the timing. If it's not real knock, maybe I should dsensitize the knock tables or something? Not sure
2/3 logs I think are showing large timing corrections on cyl 4. Must be a reason for that. Either the fuel is not good enough or the timing/boost is too high for the fuel. I would not desentize knock tables.
Cyl 4 is showing such high corrections it is basically firing after TDC. Why superknock on cyl 6 is not clear to me but I can at least see that cyl 4 is not doing well.
__________________
335i e92 TPC 19Ts
Appreciate 0
      12-13-2021, 07:31 PM   #5178
Quick335XI
First Lieutenant
Quick335XI's Avatar
105
Rep
311
Posts

Drives: 2010 335xi
Join Date: Dec 2017
Location: Dallas

iTrader: (0)

Quote:
Originally Posted by Sgop335 View Post
2/3 logs I think are showing large timing corrections on cyl 4. Must be a reason for that. Either the fuel is not good enough or the timing/boost is too high for the fuel. I would not desentize knock tables.
Cyl 4 is showing such high corrections it is basically firing after TDC. Why superknock on cyl 6 is not clear to me but I can at least see that cyl 4 is not doing well.
Thanks, any suggestions on figuring out why it’s doing that ?
Appreciate 0
      12-13-2021, 07:36 PM   #5179
Quick335XI
First Lieutenant
Quick335XI's Avatar
105
Rep
311
Posts

Drives: 2010 335xi
Join Date: Dec 2017
Location: Dallas

iTrader: (0)

Quote:
Originally Posted by Sgop335 View Post
2/3 logs I think are showing large timing corrections on cyl 4. Must be a reason for that. Either the fuel is not good enough or the timing/boost is too high for the fuel. I would not desentize knock tables.
Cyl 4 is showing such high corrections it is basically firing after TDC. Why superknock on cyl 6 is not clear to me but I can at least see that cyl 4 is not doing well.
Btw, there are Elder coils about a year old
Appreciate 0
      12-14-2021, 06:25 AM   #5180
Sgop335
Colonel
Sgop335's Avatar
United_States
645
Rep
2,005
Posts

Drives: 07 335i e92, 08 535i
Join Date: Jun 2014
Location: MD

iTrader: (1)

Quote:
Originally Posted by Quick335XI View Post
Thanks, any suggestions on figuring out why it’s doing that ?
Suggestions,
Are you sure car is also not misfiring ? It’s difficult to pick up spark blowout or misfire in logs. But it can be felt by driver. The rpms are also typically choppy in logs.
Once i also resetted knock adaptations.
I prefer eldor coils too but they need to be tight w the spark plug, dielectric grease helped for me to insulate gaps.
I like to have lower timing at 4k to 4.5k then ramp up as rpm increases..
__________________
335i e92 TPC 19Ts

Last edited by Sgop335; 12-14-2021 at 07:45 AM..
Appreciate 0
      12-16-2021, 08:52 PM   #5181
ddakarr
convertible enthusiast
ddakarr's Avatar
United_States
13
Rep
20
Posts

Drives: '98 Dakar Z3, '12 135i vert
Join Date: Jul 2019
Location: Texas

iTrader: (0)

Garage List
2012 BMW 135i  [0.00]
1998 BMW Z3  [0.00]
boost leak?

Would someone mind taking a look at this? Recently did catless DP with MHD stage 2 tune on 91oct (all we have in AZ). Blew factory charge pipe and car is now feeling kind of sluggish when doing pulls.
Car is n55 135i
Timing corrections seem high to me
boost drops off from target as RPMs rise
STFTs seem very low
WGDC seems very high

Could be a boost leak? Or maybe the tune is too much for 91oct?

Thanks in advance.

https://datazap.me/u/whtkrkid/log-16...-38&zoom=15-70
__________________
insta: @ddakarr

Last edited by ddakarr; 12-16-2021 at 08:57 PM..
Appreciate 0
      12-16-2021, 10:39 PM   #5182
Quick335XI
First Lieutenant
Quick335XI's Avatar
105
Rep
311
Posts

Drives: 2010 335xi
Join Date: Dec 2017
Location: Dallas

iTrader: (0)

Quote:
Originally Posted by Sgop335 View Post
Suggestions,
Are you sure car is also not misfiring ? It’s difficult to pick up spark blowout or misfire in logs. But it can be felt by driver. The rpms are also typically choppy in logs.
Once i also resetted knock adaptations.
I prefer eldor coils too but they need to be tight w the spark plug, dielectric grease helped for me to insulate gaps.
I like to have lower timing at 4k to 4.5k then ramp up as rpm increases..
I don’t believe it’s misfiring, not that I can tell… my PI is over 3 years old, so the injectors ever need cleaning? Thst was one thought I had, maybe one of the PI injectors on cylinder 4 is not flowing that great.
Appreciate 0
      12-17-2021, 04:09 AM   #5183
KrazyKiwi
New Member
New Zealand
0
Rep
6
Posts

Drives: 07 335i
Join Date: Aug 2019
Location: Auckland, NZ

iTrader: (0)

Hi Everyone,

Just did a log after flashing Stage 2+ on my FBO car. Could someone please provide some feedback.

https://datazap.me/u/krazykiwi/mhd-v9-stage2-run1?log=0&data=3-4-20

Cheers!
Appreciate 0
      12-17-2021, 05:39 AM   #5184
Saif2018
Brigadier General
972
Rep
3,219
Posts

Drives: E90 335i
Join Date: Jan 2019
Location: UK

iTrader: (0)

Quote:
Originally Posted by KrazyKiwi View Post
Hi Everyone,

Just did a log after flashing Stage 2+ on my FBO car. Could someone please provide some feedback.

https://datazap.me/u/krazykiwi/mhd-v9-stage2-run1?log=0&data=3-4-20

Cheers!
Looks fine mate,
Appreciate 0
      12-17-2021, 03:20 PM   #5185
Quick335XI
First Lieutenant
Quick335XI's Avatar
105
Rep
311
Posts

Drives: 2010 335xi
Join Date: Dec 2017
Location: Dallas

iTrader: (0)

Since we can't figure out these big timing pulls on cylinder 4 at this time, the tuner de-tuned the car a bit... it's a little frustrating because this is a closed deck block with steel rods and forged pistons and all I'm able to run without big timing pulls is like 26psi I guess for now I'll just leave it like this and when I get the funds, look at getting the Reflex setup. maybe one of my PI injectors isn't flowing well(?). I was really hoping to be able to dial it in and get it on the dyno soon

AnywaY here are the three logs I just did with a bit of de-tuning:

Run #1: https://datazap.me/u/terryeaton/log-...og=0&data=3-21
Run #2: https://datazap.me/u/terryeaton/log-...og=0&data=3-21
Run #3: https://datazap.me/u/terryeaton/log-...og=0&data=3-21

Any thoughts welcome, thanks
__________________
2010 335XI, Carillo Steel rods, JE pistons, Closed Deck, Stage 4 race heads, 6mt, Pure Stage 2 High Flows, B58 Coils, VRSF|Vu Brothers (Ft Worth, TX)|JSRTuning,

https://youtube.com/channel/UC_kL3RvFSGv9QmTVt6787gg

Last edited by Quick335XI; 12-17-2021 at 03:56 PM..
Appreciate 0
      12-17-2021, 08:26 PM   #5186
EvanS
Registered
EvanS's Avatar
0
Rep
1
Posts

Drives: 2008 BMW 335i (E92), 6mt,
Join Date: Dec 2021
Location: Wichita, KS

iTrader: (0)

LPFP Issue??

I've linked to two logs for back-to-back 3rd gear pulls. First pull felt good. Second pull threw 29DC code, but looking at the logs I think it might be a LPFP issue. LPFP swings wildly up and down, drops below 40psi, HPFP drops out to below 500psi, STFT maxes, and engine throws code/enters limp mode.

This seems to be happening more recently, preceded by what seem like excessive swings in LPFP and misfires.

I could use some help from more experienced folks to help troubleshoot the issue.

Thanks!
https://datazap.me/u/evans/december-...og=0&data=3-22

https://datazap.me/u/evans/december-...-12-22&hg=3-12
Appreciate 0
      12-19-2021, 12:57 AM   #5187
strmix
Registered
0
Rep
4
Posts

Drives: 335ia
Join Date: Aug 2019
Location: Finland

iTrader: (0)

Quote:
Originally Posted by EvanS View Post
I've linked to two logs for back-to-back 3rd gear pulls. First pull felt good. Second pull threw 29DC code, but looking at the logs I think it might be a LPFP issue. LPFP swings wildly up and down, drops below 40psi, HPFP drops out to below 500psi, STFT maxes, and engine throws code/enters limp mode.

This seems to be happening more recently, preceded by what seem like excessive swings in LPFP and misfires.

I could use some help from more experienced folks to help troubleshoot the issue.

Thanks!
https://datazap.me/u/evans/december-...og=0&data=3-22

https://datazap.me/u/evans/december-...-12-22&hg=3-12
I would say its your hpfp failing, because you still have good low pressures.
Appreciate 0
      12-25-2021, 04:59 PM   #5188
F13.KENN
Lieutenant
F13.KENN's Avatar
United_States
604
Rep
483
Posts

Drives: 2013 BMW M6
Join Date: Mar 2018
Location: Georgia

iTrader: (0)

https://datazap.me/u/schwarze92/mhd-...&data=3-20

Anything look off on here? 60 rolled my friends 370z today and surprised he wasnt that much slower than me. What looks weird to me is that my car doesnt seem to make boost till 5k rpms. Its been 80k miles since boost solenoids were changed. Currently at 216k miles

His 370 is fbo & tuned

Edit: noticed i was reading RPM wrong
__________________
Speedtech Top Mount 6766 2009 335i
VF Supercharged 2003 540i msport
https://www.instagram.com/schwarz.e92/
Appreciate 0
      12-26-2021, 03:41 AM   #5189
TiAgAu
Lieutenant
TiAgAu's Avatar
Australia
143
Rep
417
Posts

Drives: E92 335i
Join Date: Aug 2018
Location: Australia

iTrader: (0)

Quote:
Originally Posted by SCHWARZ_E92 View Post
https://datazap.me/u/schwarze92/mhd-...og=0&data=3-20

Anything look off on here? 60 rolled my friends 370z today and surprised he wasnt that much slower than me. What looks weird to me is that my car doesnt seem to make boost till 5k rpms. Its been 80k miles since boost solenoids were changed. Currently at 216k miles

His 370 is fbo & tuned
Yeah certainly seems quite unresponsive and very slow to build boost. WGDC is quite high in 70+ in the higher rpm's. Most in this area would be in the 50's. Possibly solenoids or maybe worn turbos

Also noticed Fuel trims are quite high aswell. Not sure why its happening have your tried to reset adaptions?
Appreciate 0
      01-09-2022, 05:39 PM   #5190
Tkent818
Private First Class
United_States
12
Rep
125
Posts

Drives: 2018 340i
Join Date: Jan 2019
Location: Mesa, AZ

iTrader: (0)

E40 log

https://datazap.me/u/tkent818/log-16...&data=3-21

Just wondering what you guys think, mods are in my sig and this is a baseline map. Waiting on a revision from Ken
__________________
2012 335is-stage 2 plus VTT turbos, catless, DCI, stage 2 LPFP, 2 inch inlets and outlets, VRSF CP with Tial BOV, VRSF 7.5 inch race intercooler, 3.5 bar map sensor, RB PCV valve
Appreciate 0
      01-09-2022, 07:51 PM   #5191
Saif2018
Brigadier General
972
Rep
3,219
Posts

Drives: E90 335i
Join Date: Jan 2019
Location: UK

iTrader: (0)

Quote:
Originally Posted by Tkent818 View Post
https://datazap.me/u/tkent818/log-16...og=0&data=3-21

Just wondering what you guys think, mods are in my sig and this is a baseline map. Waiting on a revision from Ken
HPFP (rail pressure) taking a nosedive after 6k rpm, that's not good.

Turbos seem pretty laggy, taking almost 1000rpm to reach boost target.
Appreciate 1
      01-09-2022, 08:14 PM   #5192
Tkent818
Private First Class
United_States
12
Rep
125
Posts

Drives: 2018 340i
Join Date: Jan 2019
Location: Mesa, AZ

iTrader: (0)

Quote:
Originally Posted by Saif2018 View Post
Quote:
Originally Posted by Tkent818 View Post
https://datazap.me/u/tkent818/log-16...&data=3-21

Just wondering what you guys think, mods are in my sig and this is a baseline map. Waiting on a revision from Ken
HPFP (rail pressure) taking a nosedive after 6k rpm, that's not good.

Turbos seem pretty laggy, taking almost 1000rpm to reach boost target.
O ya I just saw that rail pressure thing right now, maybe back the E off a little bit? At least until I can get a new pump and/or PI? I addressed the lagging thing with Ken in the email, it feels like it takes a long to get to red line. What can I do for that?
__________________
2012 335is-stage 2 plus VTT turbos, catless, DCI, stage 2 LPFP, 2 inch inlets and outlets, VRSF CP with Tial BOV, VRSF 7.5 inch race intercooler, 3.5 bar map sensor, RB PCV valve
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:32 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST