[Beisofmarko]

Originally Posted by 335e92tx

rough idles (especially cold start) are usually plugs if older than 15K and higher than normal boost. How old are the plugs?

If they are under 15K, Id do coils, especially if are gonna try to go to S2 level. If they are at 15 or close do both plugs and coils.

Way over 15k on plugs, i just checked service history and saw that only
3 of the spark plugs has been replaced 55 000km ago, not sure why not all..
I've had car for last 40 000km.

Anyway i'll go buy 6 new plugs tomorrow (probably OE bosch/beru)
and as i replace old ones i'll try to see if theres any indication of injector leak
or something.

Will post new logs after plugs/coils if problem persists.

Thanks alot!

[semaj]

Wondering if anyone can take a look at my log here for my 3rd to 4th gear WOT pull for my 2010 N54 135i 6MT: https://datazap.me/u/semaj/log-15222...10-11-22-23-24

Not sure why I'm getting a crap ton of timing corrections on 4th gear as well as the throttle position varying wildly. DSC is turned completely off. This was done on a downhill to uphill back road that has pretty smooth pavement.

Using the stock MHD beta 8 ACN91 tune with OE & Catted Downpipes and Linear Throttle checked as well. Car has ~48k miles and I just changed the spark plugs and coil packs less than 500 miles ago.

Anyone know why the timing corrections are occurring right after shifting into 4th? Also, why my throttle position is goofy?

[Max1636]

Would be very much appreciated if someone could have a look at my logs, had been running MHD Stage 1 for a while and the car ran great, but now feels way down on power.

I dont know how to read logs properly so I need a hand, thanks.

https://datazap.me/u/max1636/mhd-sta...og=0&data=3-21

[Ballistic]

You have to create a proper third gear pull log for us to be able to help you. This just looks like some driving about.

[Max1636]

Originally Posted by Ballistic

You have to create a proper third gear pull log for us to be able to help you. This just looks like some driving about.

No problem I’ll get more logs when I can then, unfortunately being holidays here at the moment there are police everyone which dosen’t make it easy to do a third gear pull, is there anything you can see from what is there though?

[335e92tx]

Originally Posted by semaj

Wondering if anyone can take a look at my log here for my 3rd to 4th gear WOT pull for my 2010 N54 135i 6MT: https://datazap.me/u/semaj/log-15222...10-11-22-23-24

Not sure why I'm getting a crap ton of timing corrections on 4th gear as well as the throttle position varying wildly. DSC is turned completely off. This was done on a downhill to uphill back road that has pretty smooth pavement.

Using the stock MHD beta 8 ACN91 tune with OE & Catted Downpipes and Linear Throttle checked as well. Car has ~48k miles and I just changed the spark plugs and coil packs less than 500 miles ago.

Anyone know why the timing corrections are occurring right after shifting into 4th? Also, why my throttle position is goofy?

That's really the critical period (actually its after EVERY Shift but as you go to higher gears the aero load and other elements come into play more). The car will come closest to load target there and is more likely to be a timing limits. Especially after the IATs have gone up a bit from the time in third gear. The retards should back off to zero within the first few log events. If they dont it will likely take some ethanol or a custom tune to keep you further away. It all depends on how bad they are regarding how much you are losing or destined to gain. At a min, they will probably get worse in the summer heat.

And the throttle being around 55-58 percent is how version 8 manages loads over target. It marginally closes throttle to reduce load (most common boost) but keep spool up.

Consistently at load targets.

[muncie21]

Originally Posted by Max1636

No problem I’ll get more logs when I can then, unfortunately being holidays here at the moment there are police everyone which dosen’t make it easy to do a third gear pull, is there anything you can see from what is there though?

AFRs and timing look good.

You seem to be overboosting a tad which is leading to throttle closures. This could be loose vacuum lines or lazy solenoids.

[335e92tx]

Originally Posted by Max1636

No problem I’ll get more logs when I can then, unfortunately being holidays here at the moment there are police everyone which dosen’t make it easy to do a third gear pull, is there anything you can see from what is there though?

Well, the real issue is you are just at the max for that map. Look how close actual load is relative to targets (IE reqs). And when they go over, it's usually bc boost has exceeded target so it will back down .. and the easiest way to do that but keep spool up is close throttle slightly.

[Beisofmarko]

Originally Posted by Beisofmarko

I'm getting roughness on idle, small shakes that i can feel on seat.
No shadow codes or active codes at all. Intake valves walnut blasted last week.

I took some logs hoping someone could take a look and see if theres something wierd
going on, that could point me to right direction.

2006 335i n54 (101k miles)
mods: dci, downpipes and mhd stage 2.

Idle, cold engine: https://datazap.me/u/beisofmarko/idl...&data=15-16-24

Idle, warm engine: https://datazap.me/u/beisofmarko/idl...og=0&data=3-24

3rd gear pull: https://datazap.me/u/beisofmarko/3rd...og=0&data=3-24

Thanks!

Okay, i've changed today new plugs and swapped coils cyl. 1,2,3 to 4,5,6 and vice versa.
There was some wetness on threads at cylinder 2 plug, couldn't tell for sure if it was fuel or not.

Does it look like plugs fixed anything or did swapping the coils move bank 2
problems to bank 1, that would indicate bad coil?
I don't understand these graphs properly myself so any help is greatly appreciated once again.

Idle, warm engine: https://datazap.me/u/beisofmarko/idl...og=0&data=3-24

3rd gear pull: https://datazap.me/u/beisofmarko/3rd...og=0&data=3-24

Next bet is injector?
-Thanks!

[335e92tx]

Originally Posted by Beisofmarko

Okay, i've changed today new plugs and swapped coils cyl. 1,2,3 to 4,5,6 and vice versa.
There was some wetness on threads at cylinder 2 plug, couldn't tell for sure if it was fuel or not.

Does it look like plugs fixed anything or did swapping the coils move bank 2
problems to bank 1, that would indicate bad coil?
I don't understand these graphs properly myself so any help is greatly appreciated once again.

Idle, warm engine: https://datazap.me/u/beisofmarko/idl...og=0&data=3-24

3rd gear pull: https://datazap.me/u/beisofmarko/3rd...og=0&data=3-24

Next bet is injector?
-Thanks!

Well your logs didnt load with those URLS -

But here are what you want to look at

Idle, warm engine:
https://datazap.me/u/beisofmarko/idl...19-20-24-25-26

Notice, accelerator pedal is zero. IDle is bouncing between 750 and 800 generally,. AFRs are lean and LT trims are pulling fuel while shorts are adding. Load requests are right in line with load actual. So all looks like it should be.

I would think it would have a consistent idle in gear both cold and fully warm.

If not, we need to look at VAnos timings.. And those you will have to set to log. but will probably have to turn off something else bc they are 4 variables and the max is 30.


Now for your WFO runs.
3rd gear pull:
https://datazap.me/u/beisofmarko/3rd...-27&zoom=31-79

You are basically at the limits of the map in the middle rpm range. You are going over boost target at that load and its closing the throttle. I would think the boost should be a little higher there for that load but it might be a V7 issue. Try the V8 beta maps. And reset the adapts for Lambda controls and drive for a bit with a few WFO runs before you create a log. Short term trims are still doing some adjusting since they are over 10percent.

[xm4tr1x]

Hello boys and girls I've recently done a few upgrades I'm my garage one weekend... that was fun.. not, Dci, silicone Inlets, modified outlets, Vrsf dumps and vrsf 7" HD Fmic, mhd stage 2+.so I've done a few runs and noticed I get 19 psi by 3500rpm then I'm losing boost after 5000rpm . By the time I get to 7k in at 12.6psi. There a fair bit of timing corrections and fuel rail drop could this be the cause?? Also on 98 octane. Thanks in advance guys.

[Groovysapien]

Could someone take a look at my 4th gear pull and let me know if anything looks out of wack. Mods are DCIs, Chargepipe, and Downpipes with MHD Stage 1. Also recently replaced all spark plugs with NGK 95770 gapped to 22 and the ignition coil on bank 3 with an OEM Bosch because of misfires.

https://datazap.me/u/groovysapien/04...og=0&data=3-23

[dleccord]

This is everything (the entire 8 mile commute)

https://datazap.me/u/dleccord/log-15...149-6868-14369

This is the 91-100% gas pedal/position.

https://datazap.me/u/dleccord/log-15...og=0&data=4-14


this log was taken on Cobb Stage 1 Sport tune for 91 octane (OTS), so no this isn't stock bin (?).

[Max1636]

Originally Posted by 335e92tx

Well, the real issue is you are just at the max for that map. Look how close actual load is relative to targets (IE reqs). And when they go over, it's usually bc boost has exceeded target so it will back down .. and the easiest way to do that but keep spool up is close throttle slightly.

Thanks for having a look really appreciate it, so what exactly does this mean? “You are at the max for that map” and “Look how close actual load is relative to targets”.

[335e92tx]

Originally Posted by Max1636

Thanks for having a look really appreciate it, so what exactly does this mean? “You are at the max for that map” and “Look how close actual load is relative to targets”.

It basically means the DME wont let you make more boost or power without more tuning. The load target/req is specific high water mark that is available. Once you near that, the DME will start to cut power. You will effectively need a map that targets higher boost (but via load tables).

[Max1636]

Originally Posted by 335e92tx

It basically means the DME wont let you make more boost or power without more tuning. The load target/req is specific high water mark that is available. Once you near that, the DME will start to cut power. You will effectively need a map that targets higher boost (but via load tables).

Ok thanks, my problem is that the car felt really fast before on this same tune but dosen’t anymore, much worse sometimes than others, I still only have the stock intercooler but I’m not doing pull after pull, I just haven’t been able to figure out why it’s happening.

[335e92tx]

Originally Posted by Max1636

Ok thanks, my problem is that the car felt really fast before on this same tune but dosen’t anymore, much worse sometimes than others, I still only have the stock intercooler but I’m not doing pull after pull, I just haven’t been able to figure out why it’s happening.

Didnt look abnormal on this log. IATs are only going up a few degrees and no timing retards as such.
But you didnt have it floored very long.

[GEOS07335i]

Alright first datalogs after my install of Dp's, CP, 7"FMIC and DCI. I did two pulls with the following instructions from MHD:

Start the Monitor (Auto), DSC off, 2500 rpm, 3th gear, WOT until 6500-6800RPM, Shift into the next gear and after 2-3 sec. release the throttle, slow down and stop the Monitor.

Can someone tell me if things look OK. I dont really want to beat on it if something is wrong.

https://datazap.me/u/geosbmw/mhd-sta...og=0&data=3-27

Thanks in advance.

[335e92tx]

Originally Posted by GEOS07335i

Alright first datalogs after my install of Dp's, CP, 7"FMIC and DCI. I did two pulls with the following instructions from MHD:

Start the Monitor (Auto), DSC off, 2500 rpm, 3th gear, WOT until 6500-6800RPM, Shift into the next gear and after 2-3 sec. release the throttle, slow down and stop the Monitor.

Can someone tell me if things look OK. I dont really want to beat on it if something is wrong.

https://datazap.me/u/geosbmw/mhd-sta...og=0&data=3-27

Thanks in advance.

Elevation for atlanta is 1Kfeet. That is why your baro is 14.2. Not bad but reason 1 for a custom tune. OTS work best up to probably about 800' and then start showing more side effects. It depends on other elements as to if thats enough reasons with combined with needing more power.. They say beta 8 maps are better. You might try one of them. You will get a little more throttle closer at peak load.

Doesnt look bad on retards but cyls 1 and 4 are pretty high right after shift. Are these std heat range plugs? Might go one colder.

The delta between boost target and mean is a little high. You dont have wastegate DCs logged. I would turn off fuel mode and turn on DC for at least bank1. It would be interesting to see what the DCs are and how hard the wastegates are working. What's the age on this n54? Do you have any signs of wastegate rattle?

[GEOS07335i]

Originally Posted by 335e92tx

Elevation for atlanta is 1Kfeet. That is why your baro is 14.2. Not bad but reason 1 for a custom tune. OTS work best up to probably about 800' and then start showing more side effects. It depends on other elements as to if thats enough reasons with combined with needing more power.. They say beta 8 maps are better. You might try one of them. You will get a little more throttle closer at peak load.

Doesnt look bad on retards but cyls 1 and 4 are pretty high right after shift. Are these std heat range plugs? Might go one colder.

The delta between boost target and mean is a little high. You dont have wastegate DCs logged. I would turn off fuel mode and turn on DC for at least bank1. It would be interesting to see what the DCs are and how hard the wastegates are working. What's the age on this n54? Do you have any signs of wastegate rattle?

Thanks for the info. I'll log the waste Gates DC's and turn off fuel mode. Can you tell if my LPFP and HPFP are within range?

The car has 124k on the stock turbos. I do have colder plugs what should I gap them too? Also I do hear a little bit of wastegate rattle on startup only. The wastegate rod has about 1/4" play.

Sounds like your saying the turbos are on the way out.

[335e92tx]

Originally Posted by GEOS07335i

Thanks for the info. I'll log the waste Gates DC's and turn off fuel mode. Can you tell if my LPFP and HPFP are within range?

The car has 124k on the stock turbos. I do have colder plugs what should I gap them too? Also I do hear a little bit of wastegate rattle on startup only. The wastegate rod has about 1/4" play.

Sounds like your saying the turbos are on the way out.

I dont see the LP pump getting logged. Make sure it is set also. You can probably turn of boost- P and D fact. Those really arnt an issue on an OTS tune.

HP looks ok.

as far as plugs, I dont know that gap can limit retards, if anything I would say try to tighten them up. .
018"max. The fact that the coil will need more charge time to jump the gap tells me by closing it the coil wont be as likely to be not fully charged in the interval that the spark will be triggered.

It will depend on what WGs show. IF they are working hard and you still are almost 2psi below target at peak, it will likely throw a 30FF (boost below target) at some point if you do a lot of runs. It seems to be more up high so maybe you can just get away with shifting below say 6K if it crops up.

[GEOS07335i]

Originally Posted by 335e92tx

I dont see the LP pump getting logged. Make sure it is set also. You can probably turn of boost- P and D fact. Those really arnt an issue on an OTS tune.

HP looks ok.

as far as plugs, I dont know that gap can limit retards, if anything I would say try to tighten them up. .
018"max. The fact that the coil will need more charge time to jump the gap tells me by closing it the coil wont be as likely to be not fully charged in the interval that the spark will be triggered.

It will depend on what WGs show. IF they are working hard and you still are almost 2psi below target at peak, it will likely throw a 30FF (boost below target) at some point if you do a lot of runs. It seems to be more up high so maybe you can just get away with shifting below say 6K if it crops up.

I dont see any option for LP pump Logging but I did swap my plugs out. Also I did hear a little fluttering. I dont think that was good. Attached are two logs.

https://datazap.me/u/geosbmw/log-1523132493?log=1&data=3-5-14-15-24-25

I did get the Waste Gate capture let me know what you think you made it sound like there not working at peak efficiency. I do see quite a gap between target boost and actual boost. I also swapped out plugs but my gap didnt go to .018 I gapped NGK's 95770's at .020. Please let me know if it's ok. I also feel a little bit of surging in the rpm's it's only a little bit while I have my foot on a constant throttle position? Anyway let me know if things look ok.