[Saif2018]

Originally Posted by Kalbs59

redid the log

https://datazap.me/u/kalbs59/log-159...og=0&data=3-21

HPFP (Rail pressure) wasn't selected for logging, always have that selected.

WGDC are almost maxing out 80+%, I'd flash a less aggressive map, unless you have plans to upgrade turbos. Not sure about the massive timing corrections after gear change but that could be normal, emailed MHD for log analysis.

Otherwise it looks fine.

[Saif2018]

Originally Posted by Kalbs59

redid the log

https://datazap.me/u/kalbs59/log-159...og=0&data=3-21

Reply from MHD,

"The log looks strong but you have on big correction after shift on cylinder 1 - please log again and make sure to reset logging channels to default because some important ones are missing"

I suggest you email them after doing the above...

mhd.tuning@gmail.com

Regards

[Kalbs59]

Will do thank you so much

[Saif2018]

Originally Posted by Kalbs59

Will do thank you so much

No problem.

Regards

[thormessiah]

Here is a new pull on E30 after I installed my stage 2 fuel it pump. I added 4.3 gallons of ethanol to my usual 93 fill up
https://datazap.me/u/volfwaley/stage...=0&data=2-3-21

[Silent9n54]

Originally Posted by thormessiah

Here is a new pull on E30 after I installed my stage 2 fuel it pump. I added 4.3 gallons of ethanol to my usual 93 fill up
https://datazap.me/u/volfwaley/stage...=0&data=2-3-21

did you do a log right after the fill up ?? it looks like either the E85 didnt mix correctly because every cylinder is pulling massive timing across the board or the E85 has very low E content and you need to add 1-2 gallons of E85

[simpl1g]

Hi guys, can you please review my log, I'm running stage 2 RON 98 daily with no issues. But when I try to run stage 2+ after few pulls I have misfires in random cylinders. I have new stock coils and new S55 spark plugs installed

https://datazap.me/u/simpl1g/log-159...7-8-9-10-11-22

[thormessiah]

Originally Posted by Silent11N54

did you do a log right after the fill up ?? it looks like either the E85 didnt mix correctly because every cylinder is pulling massive timing across the board or the E85 has very low E content and you need to add 1-2 gallons of E85

It’s probably the latter I’ll add another gallon or 2 tonight and see where I’m at

[kaden_o11]

https://datazap.me/u/kaden-oseen/2nd...og=0&data=3-20

If someone can take a look at this thatd be great. Wondering how my pump is doing

E92 335i 2007
93k miles, FBO, mhd stage 2+

[turbohugh]

Hello.

Please look at my logs - https://datazap.me/u/turbohugh/log-1...ata=3-21-30-31

Car is 08 with all maintenance done. Upgrades
-Cobb Catted DPs
-DCI
-stepped 5 inch IC [ARM]
-Borla Catback

I'm curious how to interpret the WGDC . I see a spike at lower rpms, also I seem to be slightly off the boost target . Do these logs look ok ? Feel free to look at any of the others.

Thanks in advance.

[Sgop335]

Originally Posted by turbohugh

Hello.

Please look at my logs - https://datazap.me/u/turbohugh/log-1...ata=3-21-30-31

Car is 08 with all maintenance done. Upgrades
-Cobb Catted DPs
-DCI
-stepped 5 inch IC [ARM]
-Borla Catback

I'm curious how to interpret the WGDC . I see a spike at lower rpms, also I seem to be slightly off the boost target . Do these logs look ok ? Feel free to look at any of the others.

Thanks in advance.

Look good. One of the logs traction control kicked in and pulled timing. Either crappy tire or slightly slick road? Usual practice is to log 2500rpm and up in 3rd. Shows spool better.
Is xhp installed?
Any questions ask away...i would log only 1 wgdc bank...

[thormessiah]

Originally Posted by Silent11N54

did you do a log right after the fill up ?? it looks like either the E85 didnt mix correctly because every cylinder is pulling massive timing across the board or the E85 has very low E content and you need to add 1-2 gallons of E85

I added an additional 2 gallons of e85 and did another pull. Car feels quick! The ethanol content from my gas station is actually e75.
https://datazap.me/u/volfwaley/stage...og=0&data=3-21

[turbohugh]

Originally Posted by Sgop335

Look good. One of the logs traction control kicked in and pulled timing. Either crappy tire or slightly slick road? Usual practice is to log 2500rpm and up in 3rd. Shows spool better.
Is xhp installed?
Any questions ask away...i would log only 1 wgdc bank...

Yes I have XHP [stage 3 OTS]
I had the MHD in Auto log mode. Will do some things later [back on a 93 octane map for now]

Tires are Goodyear Asym. Eagles . My tire pressure may be too high [44 rear - was doing some extended highway driving with a full car earlier in the week] because I'm not hooking very well..Will experiment with airing down to a lower pressure .

I also have some B8s on order. Rear shocks have left the building .. B8s should work out nice and firm.

My question is the WGDC seems to spike up to about 90% early. Just wondering what metrics I need to look at for the WGDC as far as indicators of problems or overspeeding/running out of turbo.

Thanks in advance.

[Saif2018]

Originally Posted by turbohugh

Hello.

Please look at my logs - https://datazap.me/u/turbohugh/log-1...ata=3-21-30-31

Car is 08 with all maintenance done. Upgrades
-Cobb Catted DPs
-DCI
-stepped 5 inch IC [ARM]
-Borla Catback

I'm curious how to interpret the WGDC . I see a spike at lower rpms, also I seem to be slightly off the boost target . Do these logs look ok ? Feel free to look at any of the others.

Thanks in advance.

Looks fine.

WGDC are meant to spike initially to almost max, then level out as revs climb. Yours is levelling out between 60-70% which is fine as far as im aware.

If your WGDC is consistently high like 80% etc then that could be a sign that turbo's are on their way out.

[Sgop335]

Originally Posted by turbohugh

Yes I have XHP [stage 3 OTS]
I had the MHD in Auto log mode. Will do some things later [back on a 93 octane map for now]

Tires are Goodyear Asym. Eagles . My tire pressure may be too high [44 rear - was doing some extended highway driving with a full car earlier in the week] because I'm not hooking very well..Will experiment with airing down to a lower pressure .

I also have some B8s on order. Rear shocks have left the building .. B8s should work out nice and firm.

My question is the WGDC seems to spike up to about 90% early. Just wondering what metrics I need to look at for the WGDC as far as indicators of problems or overspeeding/running out of turbo.

Thanks in advance.

When you mash the pedal, boost target jumps up and wgdc follows suit to the max value set in the tune, which is quite normal. (stock max values are lower). This is called spool. As the difference between boost and target decreases, wgdc settles down.
In 3rd gear spool could take 400 - 1000rpm (lower better). The wide range is also because, it depends when you mash the pedal. At 2000rpm spool takes longer compared to say at 3000rpm. As turbo wastegates wear out the above number increases eventually leading to 30FF (meaning boost target not met).
As for wgdc numbers yes 90+ is high but is needed to run higher boost targets. The turbos are being oversped and running higher than design boost set points. As mentioned earlier stock wgdc numbers are lower (70% or so) but then stock targets are so low.

[Silent9n54]

Originally Posted by thormessiah

I added an additional 2 gallons of e85 and did another pull. Car feels quick! The ethanol content from my gas station is actually e75.
https://datazap.me/u/volfwaley/stage...og=0&data=3-21

yeah this log is better, still a couple cylinders pull timing but it has drastically improved. Both fuel pumps are looking great so it takes e85 with ease, could probably take another gallon without issues. Maybe look at your plugs ? are you still on stock plugs ?? maybe 1 step colder will clean up those timing pulls.

[thormessiah]

Originally Posted by Silent11N54

yeah this log is better, still a couple cylinders pull timing but it has drastically improved. Both fuel pumps are looking great so it takes e85 with ease, could probably take another gallon without issues. Maybe look at your plugs ? are you still on stock plugs ?? maybe 1 step colder will clean up those timing pulls.

Okay I’ll see if another gallon helps on my next run. I am on stock Bosch plugs as they only have about 25k miles on them but I could get the step 1

[turbohugh]

Originally Posted by Sgop335

When you mash the pedal, boost target jumps up and wgdc follows suit to the max value set in the tune, which is quite normal. (stock max values are lower). This is called spool. As the difference between boost and target decreases, wgdc settles down.
In 3rd gear spool could take 400 - 1000rpm (lower better). The wide range is also because, it depends when you mash the pedal. At 2000rpm spool takes longer compared to say at 3000rpm. As turbo wastegates wear out the above number increases eventually leading to 30FF (meaning boost target not met).
As for wgdc numbers yes 90+ is high but is needed to run higher boost targets. The turbos are being oversped and running higher than design boost set points. As mentioned earlier stock wgdc numbers are lower (70% or so) but then stock targets are so low.

Ok.. So I air-ed down my tires.. they were over-inflated for solo driving. More logs.

https://datazap.me/u/turbohugh/log-1...-30&mark=53-54

I'm wondering if inlets would help or if I should gamble on these chinese turbo's I have, or if I should just live with it and just run the 2+ tunes on 'Mexico' days .
Is there merit to the idea that inlets would help reduce the duty cycles because you're 'reducing restrictions' on the inlet of the turbo ?
OR nah , bigger turbo relocated inlets ?
Thanks again for the helpful insite.

[Sgop335]

Originally Posted by turbohugh

Ok.. So I air-ed down my tires.. they were over-inflated for solo driving. More logs.

https://datazap.me/u/turbohugh/log-1...-30&mark=53-54

I'm wondering if inlets would help or if I should gamble on these chinese turbo's I have, or if I should just live with it and just run the 2+ tunes on 'Mexico' days .
Is there merit to the idea that inlets would help reduce the duty cycles because you're 'reducing restrictions' on the inlet of the turbo ?
OR nah , bigger turbo relocated inlets ?
Thanks again for the helpful insite.

Inlets are a friend and the theory behind them is relatively simple. The y axis for a turbo curve is a ratio, Pout/Pin. This ratio is called pressure ratio lol or boost setpoint. The stock inlets could produce a straw effect at higher CFM. This will reduce Pin. When Pin drops, the turbo has to target a higher setpoint to achieve the same Pout (simple ratio math). But each time the setpoint increases the turbo RPM has to increase to produce the CFM (shape of the curve). Turbo rpm = WGDC. So wgdc has to increase. The converse is true with larger inlets, wgdc will decrease and easier to achieve boost targets.

The chinese twins Does look like they are struggling to reach boost targets (esp. stg 2+). But you could have a boost leak so its one thing or another or both. You are able to see spool much better in these logs.

Another anomaly I see is the RPM jump. Think I see it in each of these logs. It seems to be a large jump >1000 in one case. Cant explain it, but doesn't seem right, feel a burst of acceleration or something? Look in to it..

[turbohugh]

Originally Posted by Sgop335

Inlets are a friend and the theory behind them is relatively simple. The y axis for a turbo curve is a ratio, Pout/Pin. This ratio is called pressure ratio lol or boost setpoint. The stock inlets could produce a straw effect at higher CFM. This will reduce Pin. When Pin drops, the turbo has to target a higher setpoint to achieve the same Pout (simple ratio math). But each time the setpoint increases the turbo RPM has to increase to produce the CFM (shape of the curve). Turbo rpm = WGDC. So wgdc has to increase. The converse is true with larger inlets, wgdc will decrease and easier to achieve boost targets.

The chinese twins Does look like they are struggling to reach boost targets (esp. stg 2+). But you could have a boost leak so its one thing or another or both. You are able to see spool much better in these logs.

Another anomaly I see is the RPM jump. Think I see it in each of these logs. It seems to be a large jump >1000 in one case. Cant explain it, but doesn't seem right, feel a burst of acceleration or something? Look in to it..

I'm on stock twins. I will check into boost leak. I will be replacing all the o-rings in the connecting pipes and doing vac lines and testing boost solenoids this weekend.

I only run 2+ maps in Mexico. Probably dial it back down to a 1+ map once I burn off this e30

[Bimerfest3]

Hello guys.please can someone throw a look on my n54 log.
I have a rough cold start and sometimes rough idle.no codes at all. No problem under WOT.
High and low fuel pressure are fluctuating at cold start
Thank you
https://datazap.me/u/georgesfeg/fuel-pressure-prob

[Saif2018]

Originally Posted by Bimerfest3

Hello guys.please can someone throw a look on my n54 log.
I have a rough cold start and sometimes rough idle.no codes at all. No problem under WOT.
High and low fuel pressure are fluctuating at cold start
Thank you
https://datazap.me/u/georgesfeg/fuel-pressure-prob

Email mhd.tuning@gmail.com for log analysis.