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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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      06-03-2016, 03:21 PM   #1
JustDriveIt
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MHD "take a look at my log" thread

There seems to be more and more posts in the "General MHD" thread of people asking to have their logs read. I figured a separate thread for this would be a good idea.
I think it's awesome we have a community willing to help each other out and we certainly have some experts here that are good at looking at logs.

If someone is willing to add a post about the "general rule" when looking at logs (like what to look for - timing, boost, lpfp, etc.) I think that my also be helpful.
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      06-03-2016, 03:43 PM   #2
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Good idea for a thread, I read the general one a lot and see logs everywhere. With that being said I just started using mhd about 3 days ago and I'm trying to learn the log reading as well. I have exhuast and catless dps. Everything else is stock. I know I need a fmic based on the iat and my lpfp dips below 50 to the high 40s 2 or 3 times when looking at the actual spread sheet. Anything else to note that I should be looking for when reading these logs?

95 octane map stage 2
4.5 gal e85 the rest 91

http://www.datazap.me/u/stephengreen...og=0&data=4-23
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      06-03-2016, 06:55 PM   #3
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Really good Idea for a thread, should sticky.


stephen335xi you have quite a few timing corrections, and you need an intercooler asap. Your IAT are way up there, on top of the LPFP dipping and your boost is below target
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      06-03-2016, 07:19 PM   #4
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Quote:
Originally Posted by dreyo27 View Post
Really good Idea for a thread, should sticky.


stephen335xi you have quite a few timing corrections, and you need an intercooler asap. Your IAT are way up there, on top of the LPFP dipping and your boost is below target
Thanks, ill check the vac lines and look into the other things.
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      06-05-2016, 01:41 AM   #5
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Quote:
Originally Posted by JustDriveIt View Post
If someone is willing to add a post about the "general rule" when looking at logs (like what to look for - timing, boost, lpfp, etc.) I think that my also be helpful.
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      06-05-2016, 10:42 AM   #6
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I found this useful for reading N54 logs: COBB Parameters to Log and Definitions
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      06-06-2016, 04:05 AM   #7
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My latest log

I'll bite. Please let me know what you think of my log. 2009 535i 6MT, PURE Stage 2, Wagner FMIC, VRSF pipes, RPi exhaust, 72k, no walnut blast, stock LPFP. MHD V6.1 E40.

http://datazap.me/u/breakmywallet/th...og=0&data=4-24
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      06-06-2016, 03:39 PM   #8
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Quote:
Originally Posted by BreakMyWallet View Post
I'll bite. Please let me know what you think of my log. 2009 535i 6MT, PURE Stage 2, Wagner FMIC, VRSF pipes, RPi exhaust, 72k, no walnut blast, stock LPFP. MHD V6.1 E40.

http://datazap.me/u/breakmywallet/th...og=0&data=4-24
Thats a very conservative tune for someone with pure stage 2 lol
Your intercooler is as bad as mine (AA street) whats was the ambient temp like?

The only bad thing I notices was the Cyl3 timing corrections. maybe swap the coil and the plug from 3 to 4 and see if it moves.

Love how your stage 2s hold boost up top.
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      06-06-2016, 04:06 PM   #9
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Quote:
Originally Posted by dreyo27 View Post
Thats a very conservative tune for someone with pure stage 2 lol
Your intercooler is as bad as mine (AA street) whats was the ambient temp like?

The only bad thing I notices was the Cyl3 timing corrections. maybe swap the coil and the plug from 3 to 4 and see if it moves.

Love how your stage 2s hold boost up top.
I think ambient temps were just over 100f when I took that log. Should the intercooler do better? It may be coated with oil inside since my previous turbos were smoking. Do smoking turbos leak on the intake side or the exhaust side? I was getting liquid oil reaching as far back as my tailpipe. I need to look at other people's logs and see where their IAT's are at. Maybe that's a reason why I'll include water/meth injection in my setup, since I already have the kit.

I just finalized my install of the Stage 2's last weekend. I was running V5 E40 map and had old coils and new plugs, and boost was maxing out the sensor I was getting tons of misfires on all cylinders. The pull below the misfires was pretty ferocious to me.

This V6.1 map keeps me out of the misfires until I get the my fueling and custom tune dialed in. I replaced my coils just before that log. I still need a walnut blast and my LPFP hasn't been upgraded.

I think the timing corrections may have to do with the need for walnut blasting; just speculating on that. If I do some more logs and see that cylinder 3 seems to specifically be pulling timing I'll try swapping the coil and plug around to see if it moves with it.

Thanks for checking my log and giving me your feedback.
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      06-06-2016, 05:28 PM   #10
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Please see my MHD E60 Wedge Custom tune below, mods in sig:

http://datazap.me/u/jsapudar/e60-wed...og=0&data=4-21
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      06-06-2016, 09:05 PM   #11
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Quote:
Originally Posted by BreakMyWallet View Post
I think ambient temps were just over 100f when I took that log. Should the intercooler do better? It may be coated with oil inside since my previous turbos were smoking. Do smoking turbos leak on the intake side or the exhaust side? I was getting liquid oil reaching as far back as my tailpipe. I need to look at other people's logs and see where their IAT's are at. Maybe that's a reason why I'll include water/meth injection in my setup, since I already have the kit.

I just finalized my install of the Stage 2's last weekend. I was running V5 E40 map and had old coils and new plugs, and boost was maxing out the sensor I was getting tons of misfires on all cylinders. The pull below the misfires was pretty ferocious to me.

This V6.1 map keeps me out of the misfires until I get the my fueling and custom tune dialed in. I replaced my coils just before that log. I still need a walnut blast and my LPFP hasn't been upgraded.

I think the timing corrections may have to do with the need for walnut blasting; just speculating on that. If I do some more logs and see that cylinder 3 seems to specifically be pulling timing I'll try swapping the coil and plug around to see if it moves with it.

Thanks for checking my log and giving me your feedback.
So I have a crappy AA sport intercooler at 17 PSI and stock turbos that probably produce more heat then urs when it was 104 out, my log started at 113 in 3rd gear and ended at 142 at 7142 RPMS

I think if it was walnut blasting it wouldn't be just one cylinder.
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      06-06-2016, 09:17 PM   #12
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Quote:
Originally Posted by E90Crack View Post
Please see my MHD E60 Wedge Custom tune below, mods in sig:

http://datazap.me/u/jsapudar/e60-wed...og=0&data=4-21
Nice tune. I would recommend asking Wedge, but i would say your turbos are tired.
It takes them 900 RPMS to build full boost, and they are way below target, even in the midrange.
On top of that your HPFP is tired too, and has dangerously low presssure I probably would not be as brave as you.
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      06-06-2016, 10:02 PM   #13
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Quote:
Originally Posted by E90Crack View Post
Please see my MHD E60 Wedge Custom tune below, mods in sig:

http://datazap.me/u/jsapudar/e60-wed...og=0&data=4-21
I so f'n jelly son... nice log from what I know. Looks like you let off a little early but then again I'd have to imagine you were into the 100's
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      06-06-2016, 11:06 PM   #14
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Quote:
Originally Posted by the storm breaks View Post
Any ideas on the post and log above? I flashed back to Stage 1 93 5.1 and have had no misfires since. I tried 93 v5.3 but it felt very sluggish at WOT. Thanks
Its hard to tell from that.
to do a proper log,
Step 1 (go somewhere were you can go from 40mph to north of 100MPH) if you are going to do it on the street go to Mexico
Step 2 disable traction control
Step 3 put your car in 3rd gear and make sure it stays there.
Step 4 press the log button on your device
Step 5 start from 2000 RPMS in 3rd gear and go WOT until you hit 6000-7000 RPMS while still being in 3rd gear.
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      06-07-2016, 12:40 AM   #15
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Quote:
Originally Posted by dreyo27 View Post
So I have a crappy AA sport intercooler at 17 PSI and stock turbos that probably produce more heat then urs when it was 104 out, my log started at 113 in 3rd gear and ended at 142 at 7142 RPMS

I think if it was walnut blasting it wouldn't be just one cylinder.
I don't know what to conclude from your IAT results vs mine. Your IAT rose 29 degrees during your pull to redline and mine rose somewhere between 7-9 degrees to redline. What's considered good intercooler performance?
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      06-07-2016, 08:32 AM   #16
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Have a lil hesitation sometimes but it's very hard to replicate as it's not constant..

Anyone care to take a peak..??
http://datazap.me/u/beastmode335i/61...13-14-16-23-24

plugs, coils, injectors, etc are all under 2k miles..
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      06-07-2016, 12:21 PM   #17
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Great thread!
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      06-07-2016, 12:56 PM   #18
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Quote:
Originally Posted by BeastMode335i View Post
Have a lil hesitation sometimes but it's very hard to replicate as it's not constant..

Anyone care to take a peak..??
http://datazap.me/u/beastmode335i/61...13-14-16-23-24

plugs, coils, injectors, etc are all under 2k miles..
probably traction control.
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      06-07-2016, 01:43 PM   #19
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Quote:
Originally Posted by dreyo27 View Post
probably traction control.
Hmm good call, I don't remember if I had it on or off now that u mention it.. However I did notice one time when I had it turned completely off, it still hesitated a bit when I went WOT from a 2nd gear roll.. I was under the influence that once it was turned completely off, there was no traction guidance at all from the car, was I wrong.. ??
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      06-07-2016, 01:58 PM   #20
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Quote:
Originally Posted by E90Crack View Post
Please see my MHD E60 Wedge Custom tune below, mods in sig:

http://datazap.me/u/jsapudar/e60-wed...og=0&data=4-21
The transition from Spool mode to non-spool mode seems a bit abrupt (both for timing and fueling). I prefer a much smoother transition to keep things predictable when driving.

-Robert
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      06-07-2016, 08:43 PM   #21
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Experimenting with a stg 2 6.1 tune. I have no DP's but have an upgraded FMIC and intake so figured I'd play with it. Not too concerned with the small corrections during the pull (my understanding is that corrections less than -5 on less than 3 cylinders during a pull is OK) but man, look at the multiple corrections *after* the pull when I merged into traffic! Is that normal? Car felt fine the whole time. Any thoughts appreciated.

http://datazap.me/u/andyw/small-hunt...-9-10-11-12-15
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      06-07-2016, 09:04 PM   #22
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Could someone take a look at these two logs. I've gotten a misfire now twice on cylinder 6. I'm full bolt-on running MHD stage 2 v5

http://www.datazap.me/u/cochran/log-...og=0&data=4-22

http://www.datazap.me/u/cochran/log-...og=0&data=4-22

DME codes that appeared when i scanned were: 29D2
Shadow codes were: 2AD0, 29F4, 29F5, 2AAF
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Last edited by cochran; 06-07-2016 at 09:22 PM..
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