Can someone help with my MHD Log?

pjr710 · 11-07-2018, 07:25 AM

I'm trying to troubleshoot 30ff. I did this log on the way to work its my first log.

I want to know if i have to adjust my wastegate acutators - i've ruled out just about everything else.

this was at 4th gear ... car is bone stock .. i just have the MHD monitoring module

https://datazap.me/u/pjr710/4th-gear...15-19-23-24-25

Pladi · 11-07-2018, 10:04 AM

You are not logging the most important parameter. Timing Correction

Also use 3rd gear its more realistic. Start at 3000 RPM up to red line pretty much.

pjr710 · 11-07-2018, 11:09 AM

Quote:

Originally Posted by Pladi

You are not logging the most important parameter. Timing Correction

Also use 3rd gear its more realistic. Start at 3000 RPM up to red line pretty much.

will do .. and yes i realized that about 3rd .. i have to re-do it

Pladi · 11-07-2018, 11:49 AM

Quote:

Originally Posted by pjr710

will do .. and yes i realized that about 3rd .. i have to re-do it

Also make sure its full throttle. Its important. Partial throttles are not good logs.

pjr710 · 11-07-2018, 12:35 PM

Quote:

Originally Posted by Pladi

Also make sure its full throttle. Its important. Partial throttles are not good logs.

yea .. i was at 99% pedal position ... but throttle opens to about 81% only i guess?

Pladi · 11-07-2018, 01:30 PM

Quote:

Originally Posted by pjr710

yea .. i was at 99% pedal position ... but throttle opens to about 81% only i guess?

Yes thats ok. Do the same 3 gear enable all parameters no reason why not.

pjr710 · 11-07-2018, 01:55 PM

Quote:

Originally Posted by Pladi

Yes thats ok. Do the same 3 gear enable all parameters no reason why not.

I had as many parameters enabled as it let me.

It doesn't allow all.

pjr710 · 11-07-2018, 03:21 PM

Here's two more, I can make 30FF happen like clockwork and it's always around my pedal position .. once I go to 99% I can make that 30FF bell ring. What's interesting is that I can see my throttle opens at 81 even at 61% pedal position.

Here's a 3rd gear pull under partial pedal down position .. with no 30ff
https://datazap.me/u/pjr710/3rd-gear...-9-15-19-23-25

Here's my 3rd gear pull with full pedal down position. 30FF happened probably right when the boost starts dropping:
https://datazap.me/u/pjr710/3rd-gear...-9-15-23-24-25

Pladi · 11-07-2018, 03:28 PM

you have a boost leak, its probably one of those diverter valve sensors. If you have not done any installs recently and messed up some pluming..

pjr710 · 11-07-2018, 03:56 PM

Quote:

Originally Posted by Pladi

you have a boost leak, its probably one of those diverter valve sensors. If you have not done any installs recently and messed up some pluming..

So far I have replaced all my vac lines ... and I did a pressurized boost leak test ... with no leaks.

So i believe the leak is coming from my wastegate/s not closing all the way.

pjr710 · 11-08-2018, 07:28 AM

Here's a couple pulls from this morning

https://datazap.me/u/pjr710/no-30ff-...data=5-6-15-23

No 30ff .. but I think i'm just getting lucky. If I had to guess i'd say i'm building boost slowly, and then there isn't enough variance to actually throw 30ff.

I notice if I floor it in higher RPMs I have less of a chance of 30FF .. but I think that's b/c the turbos spool faster.

Pladi · 11-08-2018, 09:58 AM

Very interesting response. How does the car feel ? I would assume kinda sluggish and not as torque ey ?

Pladi · 11-08-2018, 09:59 AM

I would replace the diverter valve.

pjr710 · 11-08-2018, 11:08 AM

Quote:

Originally Posted by Pladi

Very interesting response. How does the car feel ? I would assume kinda sluggish and not as torque ey ?

yea it just feels like of laggy and sloppy. It also doesn't even feel consistent. There's times when I feel like i instantly spool .. than other times where it feels like it has to catch a spool.

It's super weird.

Where would the diverter valves leak from?, as I mentioned I did a boosted leak test and didn't hear anything

Pladi · 11-08-2018, 11:50 AM

Quote:

Originally Posted by pjr710

yea it just feels like of laggy and sloppy. It also doesn't even feel consistent. There's times when I feel like i instantly spool .. than other times where it feels like it has to catch a spool.

It's super weird.

Where would the diverter valves leak from?, as I mentioned I did a boosted leak test and didn't hear anything

Dont get so hung up on this leak test the valve is designed to open and close so you would have to test ITS operation.. It has an electric component too so that is probably not working..

pjr710 · 11-08-2018, 02:31 PM

Quote:

Originally Posted by Pladi

Dont get so hung up on this leak test the valve is designed to open and close so you would have to test ITS operation.. It has an electric component too so that is probably not working..

ahh I see what you're saying. i may test them then as well.

there is an electrical component??? where? I never saw any plugs to it

11-07-2018, 07:25 AM	#1
pjr710 Lieutenant 93 Rep 541 Posts Drives: 335i Join Date: Sep 2015 Location: PA iTrader: (0)	Can someone help with my MHD Log? I'm trying to troubleshoot 30ff. I did this log on the way to work its my first log. I want to know if i have to adjust my wastegate acutators - i've ruled out just about everything else. this was at 4th gear ... car is bone stock .. i just have the MHD monitoring module https://datazap.me/u/pjr710/4th-gear...15-19-23-24-25
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11-07-2018, 10:04 AM	#2
Pladi Lieutenant Colonel 718 Rep 1,753 Posts Drives: 2011 335i xdrive Join Date: Nov 2017 Location: Waterloo, ON Canada iTrader: (0)	You are not logging the most important parameter. Timing Correction Also use 3rd gear its more realistic. Start at 3000 RPM up to red line pretty much. Last edited by Pladi; 11-07-2018 at 10:22 AM..
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11-07-2018, 03:21 PM	#8
pjr710 Lieutenant 93 Rep 541 Posts Drives: 335i Join Date: Sep 2015 Location: PA iTrader: (0)	Here's two more, I can make 30FF happen like clockwork and it's always around my pedal position .. once I go to 99% I can make that 30FF bell ring. What's interesting is that I can see my throttle opens at 81 even at 61% pedal position. Here's a 3rd gear pull under partial pedal down position .. with no 30ff https://datazap.me/u/pjr710/3rd-gear...-9-15-19-23-25 Here's my 3rd gear pull with full pedal down position. 30FF happened probably right when the boost starts dropping: https://datazap.me/u/pjr710/3rd-gear...-9-15-23-24-25
	Appreciate 0 Quote

11-07-2018, 03:28 PM	#9
Pladi Lieutenant Colonel 718 Rep 1,753 Posts Drives: 2011 335i xdrive Join Date: Nov 2017 Location: Waterloo, ON Canada iTrader: (0)	you have a boost leak, its probably one of those diverter valve sensors. If you have not done any installs recently and messed up some pluming..
	Appreciate 0 Quote

11-08-2018, 07:28 AM	#11
pjr710 Lieutenant 93 Rep 541 Posts Drives: 335i Join Date: Sep 2015 Location: PA iTrader: (0)	Here's a couple pulls from this morning https://datazap.me/u/pjr710/no-30ff-...data=5-6-15-23 No 30ff .. but I think i'm just getting lucky. If I had to guess i'd say i'm building boost slowly, and then there isn't enough variance to actually throw 30ff. I notice if I floor it in higher RPMs I have less of a chance of 30FF .. but I think that's b/c the turbos spool faster.
	Appreciate 0 Quote

11-08-2018, 09:58 AM	#12
Pladi Lieutenant Colonel 718 Rep 1,753 Posts Drives: 2011 335i xdrive Join Date: Nov 2017 Location: Waterloo, ON Canada iTrader: (0)	Very interesting response. How does the car feel ? I would assume kinda sluggish and not as torque ey ?
	Appreciate 0 Quote

11-08-2018, 09:59 AM	#13
Pladi Lieutenant Colonel 718 Rep 1,753 Posts Drives: 2011 335i xdrive Join Date: Nov 2017 Location: Waterloo, ON Canada iTrader: (0)	I would replace the diverter valve.
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