[Fallenangel123]

Hi guys,

My car is currently stock, monitoring via MHD I can see that all six cylinders are pulling timing. This is occurring during relatively gentle driving. Fuel is V Power 99 Ron

The car has recently had the following done:
6 x new eldor coils
6 x new bosch spark plugs
3 x new index 12 v2 injectors
1 x new valve cover / gasket / screws

The car is not throwing any codes / shadow codes

Could anyone please advise?

Link to log: https://datazap.me/u/fallenangel123/...a=5-6-7-8-9-10


Thanks

[Meatos]

Its normal
https://blog.protuningfreaks.com/201...eliable-power/

[Fallenangel123]

Originally Posted by Meatos

Its normal
https://blog.protuningfreaks.com/201...eliable-power/

At what point are negative timing corrections deemed excessive? Some of mine are pulled to -7 and -5, and it just seems odd that it occurs during gentle driving?

[Meatos]

Originally Posted by Fallenangel123

At what point are negative timing corrections deemed excessive? Some of mine are pulled to -7 and -5, and it just seems odd that it occurs during gentle driving?

If it pulls that much timing during full throttle pulls then you have some problem, otherwise dont worry about it.

[Fallenangel123]

Originally Posted by Meatos

If it pulls that much timing during full throttle pulls then you have some problem, otherwise dont worry about it.

So pulling 5 - 7 degrees during cruising is okay. But if it is during a WOT run, then I have an issue?

Is that correct?

[Meatos]

Originally Posted by Fallenangel123

So pulling 5 - 7 degrees during cruising is okay. But if it is during a WOT run, then I have an issue?

Is that correct?

Correct
Do log pulls on 3-4th gear and evaluate
https://www.docdroid.net/IyQ24N5/int...d-datalogs.pdf

[type-dRew]

The stock map is ridiculous for timing correction. Disregard it. Also pay zero attention to cruising logs, dont bother with them aside to pin point a specific issue.

I had all kinds of corrections on stock map. I flashed mhd stage2+ and would only have minor if any corrections after the shift.

[Fallenangel123]

Originally Posted by Meatos

Correct
Do log pulls on 3-4th gear and evaluate
https://www.docdroid.net/IyQ24N5/int...d-datalogs.pdf

Thank you, I will do this log as described and update with findings.
Thanks for the PDF as well, not seen this before but very informative!

Originally Posted by type-dRew

The stock map is ridiculous for timing correction. Disregard it. Also pay zero attention to cruising logs, dont bother with them aside to pin point a specific issue.

I had all kinds of corrections on stock map. I flashed mhd stage2+ and would only have minor if any corrections after the shift.

Thanks for the information. Much appreciated

[Fallenangel123]

Originally Posted by Meatos

Correct
Do log pulls on 3-4th gear and evaluate
https://www.docdroid.net/IyQ24N5/int...d-datalogs.pdf

Updated: Log in 3rd - 4th gear: https://datazap.me/u/fallenangel123/...7-8-9-10-12-13

Seeing timing corrections across 4 cylinders near the start of the pull at -2.7. This is still at stock

[type-dRew]

Looks fine to me.

Those corrections are extremely minor considering how outrageous the stock algorithm is for timing.

Also makes healthy boost, my car never targeted more than 6.5psi in my factory logs. Of course it was also stone cold when i did that.

[Fallenangel123]

Log on MHD Stage 1+ V8.0

https://datazap.me/u/fallenangel123/...7-8-9-10-12-21

Could someone please take a look and confirm?

Edit: It looks like I have no corrections on the Cyl Timing cor 1->6. But I can see negative timing on timing cyl.1 crk * at -2.21 during the WOT pull, and -6 after the throttle had been let off
What is the difference between these two?

[Meatos]

Originally Posted by Fallenangel123

Log on MHD Stage 1+ V8.0

https://datazap.me/u/fallenangel123/...7-8-9-10-12-21

Could someone please take a look and confirm?

Edit: It looks like I have no corrections on the Cyl Timing cor 1->6. But I can see negative timing on timing cyl.1 crk * at -2.21 during the WOT pull, and -6 after the throttle had been let off
What is the difference between these two?

Looks good , did you shut of antispin?
The timing occurs beacause you let of the pedal as seen in the log.

[Fallenangel123]

Originally Posted by Meatos

Looks good , did you shut of antispin?
The timing occurs beacause you let of the pedal as seen in the log.

What about the post shift timing drop from 3->4. Pedal was still at 100%.
DSC was off, but all traction systems were not

Edit: I can also see the post shift 3-4 timing drop also occurs on the stock tune, but much worse

[Meatos]

Originally Posted by Fallenangel123

What about the post shift timing drop from 3->4. Pedal was still at 100%.
DSC was off, but all traction systems were not

Edit: I can also see the post shift 3-4 timing drop also occurs on the stock tune, but much worse

Look at throttle position on the log, the dme closes throttle when shifting and lowers timing because of it you can go full throttle all you want, when shifting ofcourse the engine cant go full power. Nothing you can or should do about it.

It also closes throttle because of overboost 5000rpm-6000rpm, nothing to worry about, the dme does its job and controlls the overboost.

[Fallenangel123]

Originally Posted by Meatos

Look at throttle position on the log, the dme closes throttle when shifting and lowers timing because of it you can go full throttle all you want, when shifting ofcourse the engine cant go full power. Nothing you can or should do about it.

It also closes throttle because of overboost 5000rpm-6000rpm, nothing to worry about, the dme does its job and controlls the overboost.

Ah yes I see now. Would you say I am good to go on this map then? Thanks

[type-dRew]

It looks great, pretty much as good as you can hope for in a log. It pulls timing on the shift because every OTS map will do that. It pulls timing when you let off because you arent wide open anymore and its correcting itself.

Do you have any codes now? You are logging low side fuel pressure sensor but the reading is 0. I suspect you have a bad sensor. Although if you did, it should have a code.

Since you dont have an intercooler, keep an eye on intake temps(they get hot fast even on that short pull) on long pulls and get an upgraded fmic asap.

[Fallenangel123]

Originally Posted by type-dRew

It looks great, pretty much as good as you can hope for in a log. It pulls timing on the shift because every OTS map will do that. It pulls timing when you let off because you arent wide open anymore and its correcting itself.

Do you have any codes now? You are logging low side fuel pressure sensor but the reading is 0. I suspect you have a bad sensor. Although if you did, it should have a code.

Since you dont have an intercooler, keep an eye on intake temps(they get hot fast even on that short pull) on long pulls and get an upgraded fmic asap.

Thanks dude,

The car is a Z4, not sure if it has a different LFP sensor or such that MHD is not hooked in to. My last Z4 did not have any values for the LFP either. No codes / shadow codes.

[type-dRew]

Hmmm. Might not, i'm not familiar with Z4s. Maybe same as an n55 setup which doesn't utilize one either.

[Fallenangel123]

Originally Posted by type-dRew

Hmmm. Might not, i'm not familiar with Z4s. Maybe same as an n55 setup which doesn't utilize one either.

A quick google suggests the 35is does not have a low pressure fuel sensor

[Jklad]

Originally Posted by Fallenangel123

A quick google suggests the 35is does not have a low pressure fuel sensor

The z4's with n54 do not have the lp sensor, all other n54 cars do have the sensor. The z4 also has a bit more robust low pressure pump and plumbing vs the other n54 cars.

[335e92tx]

Originally Posted by Jklad

all other n54 cars do have the sensor. The z4 also has a bit more robust low pressure pump and plumbing vs the other n54 cars.

its actually retrofit - it didnt come on N54s from the factory. At about the 3rd HP fuel pump revision they added it.