[OzBMR]

Originally Posted by Eldotbe

What weights do you use for an M140 and settings?

Tomorrow I’m going to flash the mhd 98ron map again and try again with a different fuel station. See if it makes any difference.

I put mine on a weighbridge.

I use 1525 kg for the car with 1/2 tank fuel and then whatever the weight of the driver separately.

[kern417]

Originally Posted by IMS-340MP

Guys can somebody have a look at this log please.

I have 2 boost spikes followed by boost drop at 5600 and 6100 RPM in 5th gear.

I did feel the dip in power before but now I could see it the log.

It happens in hot weather and today was 40+ Celsius.

Log was done on OEM MPPSK tune.

https://datazap.me/u/ims/log-1589827...data=3-4-12-22

Thanks guys

You're boosting really high for MPPSK. It's also intresting that boost target drops and timing spikes at the same time, which to me indicates the ECU is doing it deliberately (not just a hardware fluke).

Your IATs get up to over 140F. It also shows that your charge air temp dropped after the boost dip. The car begins running extremely rich, in the down to 11afr.

Potentially the DME is protecting itself from high temps/detonation?

Originally Posted by Eldotbe

You got any custom tuners recommendations? F80paul is a little on the expensive side for me but I guess you pay for what you get. Or for mhd custom tune, I’ve seen twisted tunes have one. I don’t know a lot about the custom tune sides of these platforms

His results speak for themselves. He had a black friday sale last year so I jumped on it, but still worth full price imo.

I have gotten mixed reviews from others but there are plenty that produce results. Cary Jordan, HCPerformance, Pureboost, Twisted Tuning...just depends on your platform and goals. Message the tuners to get a feel for what they offer and what they recommend for their goals. Then pick the one that has the best fit for you.

[IMS-340C]

Thanks, so basically the ECU is trying to achieve the required targets while dealing with the low octane fuel and heat at the same time.

A friend of mine is running BM3 stage 2 in the same conditions I'll try to post his logs.

Originally Posted by kern417

You're boosting really high for MPPSK. It's also intresting that boost target drops and timing spikes at the same time, which to me indicates the ECU is doing it deliberately (not just a hardware fluke).

Your IATs get up to over 140F. It also shows that your charge air temp dropped after the boost dip. The car begins running extremely rich, in the down to 11afr.

Potentially the DME is protecting itself from high temps/detonation?

[Eldotbe]

Right so did another couple logs today on MHD 98RON stage 2, on exactly same fuel as before (Shell Vpower 99Ron), noticed that timing correction were a lot less and overall looked better. Looks like the ecu did need to adapt

Thing I'm slightly worried about is the 'timing delta for knock adapt'. Is this an actual indication of knock? reached -1.1 on one of the logs, which was a lot worse than my logs before. But timing seems to be okay. Would appreciate some help

Both logs on this link:
https://datazap.me/u/eldotbe/mhd-st2...37-38-39-40-44

Also looks like its pushing more power compared to before too on virtual dyno (Orange is the lastest)
https://gyazo.com/26a3623d5e7ecc58bb9caa9e700c4d53


Cheers

[OzBMR]

Originally Posted by Eldotbe

Right so did another couple logs today on MHD 98RON stage 2, on exactly same fuel as before (Shell Vpower 99Ron), noticed that timing correction were a lot less and overall looked better. Looks like the ecu did need to adapt

Thing I'm slightly worried about is the 'timing delta for knock adapt'. Is this an actual indication of knock? reached -1.1 on one of the logs, which was a lot worse than my logs before. But timing seems to be okay. Would appreciate some help

Both logs on this link:
https://datazap.me/u/eldotbe/mhd-st2...37-38-39-40-44

Also looks like its pushing more power compared to before too on virtual dyno (Orange is the lastest)
https://gyazo.com/26a3623d5e7ecc58bb9caa9e700c4d53


Cheers

Can't access the datazap link?

[Neil07]

Originally Posted by JD11937

That's great to hear, I'm planning on doing the same. Would you mind sharing what kind of whp you are making? Rwd or awd?

I'm AWD. I did not dyno my car. I might get it dyno this summer once things start opening back up again.

[Eldotbe]

Originally Posted by OzBMR

Can't access the datazap link?

Had it on private for some reason... should be all good now

[yokata]

Originally Posted by Neil07

I'm AWD. I did not dyno my car. I might get it dyno this summer once things start opening back up again.

Times 0-100kph 100-200kph 1/4 mile?

[OzBMR]

Originally Posted by Eldotbe

Right so did another couple logs today on MHD 98RON stage 2, on exactly same fuel as before (Shell Vpower 99Ron), noticed that timing correction were a lot less and overall looked better. Looks like the ecu did need to adapt

Thing I'm slightly worried about is the 'timing delta for knock adapt'. Is this an actual indication of knock? reached -1.1 on one of the logs, which was a lot worse than my logs before. But timing seems to be okay. Would appreciate some help

Both logs on this link:
https://datazap.me/u/eldotbe/mhd-st2...37-38-39-40-44

Also looks like its pushing more power compared to before too on virtual dyno (Orange is the lastest)
https://gyazo.com/26a3623d5e7ecc58bb9caa9e700c4d53


Cheers

Looks good to me.

The timing delta for knock adaption is early in run 1 and decays quickly by 4500RPM. May be VANOS related as sometimes there can be knock like events between 2000 - 3000 RPM Run 2 delta for knock adaption is minor and timing is good.

Timing progresses well to 14 - 15 degrees across all cylinders in both runs and area under the curve for power and torque are improved compared to other maps you've tested.

I'd run that map for a while with that fuel and see how it settles in.

[OzBMR]

Originally Posted by Neil07

I'm AWD. I did not dyno my car. I might get it dyno this summer once things start opening back up again.

Why not use Virtual Dyno?

As a minimum all you need is a couple of 4th gear runs from 2500 - 6800 RPM from a flat section of road with time stamp and RPM. That'll give you a pretty accurate WHP and lbft reading without giving away any tuning secrets. You can PM me if you prefer.

[Glemm1970]

https://datazap.me/sites/default/fil...uns%281%29.csv
Yesterday I made a mixture of 15% E85 with 98Ron. Map Mhd 2 + hpfp 102 Ron. JB4 Map 6 with WMI. Time 100-200 7.3s easy. Watch the log with JB4. In my opinion, everything is fine.

[OzBMR]

Originally Posted by Glemm1970

https://datazap.me/sites/default/fil...uns%281%29.csv
Yesterday I made a mixture of 15% E85 with 98Ron. Map Mhd 2 + hpfp 102 Ron. JB4 Map 6 with WMI. Time 100-200 7.3s easy. Watch the log with JB4. In my opinion, everything is fine.

Super fast, log looks good.

Fuel pressure has a dip between 3700 - 4200 RPM?

[Glemm1970]

Yes, I see this fall. I think it is corrected by software. On the go, it does not feel.

[Glemm1970]

Chris answered me in a letter that there would be an update from mhd about the sound of the pump, maybe this drop will be corrected.

[Eldotbe]

Originally Posted by OzBMR

Looks good to me.

The timing delta for knock adaption is early in run 1 and decays quickly by 4500RPM. May be VANOS related as sometimes there can be knock like events between 2000 - 3000 RPM Run 2 delta for knock adaption is minor and timing is good.

Timing progresses well to 14 - 15 degrees across all cylinders in both runs and area under the curve for power and torque are improved compared to other maps you've tested.

I'd run that map for a while with that fuel and see how it settles in.

Thanks man

[Eldotbe]

With regards to the ‘timing delta for knock adapt’ on the mhd logger, is that actually an indication of knock? What does it actually mean if not?? And what’s classed as a high value for this?

[zutal]

Hello guys! this is my log :
bootmod3 v2.0 stage 2 on 91 octane , looks in order?

http://bootmod3.net/log?id=5e3eef3dd10b43292c8a4f7f

[kern417]

Originally Posted by Eldotbe

With regards to the ‘timing delta for knock adapt’ on the mhd logger, is that actually an indication of knock? What does it actually mean if not?? And what’s classed as a high value for this?

My understanding is it's a value that relates to how much timing will be pulled when knock is experienced. Theoretically smaller would be better because you need less adjustment to keep the car happy, but only if the car can handle it. Someone can correct me if I'm wrong, since I don't pay attention to it to much. Timing pull is the best indicator of knock as OzBMR mentioned previously. The actual knock counter won't catch everything due to logging frequency.

Originally Posted by zutal

Hello guys! this is my log :
bootmod3 v2.0 stage 2 on 91 octane , looks in order?

http://bootmod3.net/log?id=5e3eef3dd10b43292c8a4f7f

Looks pretty good I would try upgrading to v2.1 if you haven't already. It has a little more boost in the midrange.

[OzBMR]

Originally Posted by Eldotbe

With regards to the ‘timing delta for knock adapt’ on the mhd logger, is that actually an indication of knock? What does it actually mean if not?? And what’s classed as a high value for this?

I asked MHD a few specific questions about knock detection, timing corrections and timing delta for knock adaption. This is the answer I got...

The DME reduces timing target in case of pre-knock detection - that's timing delta for knock adaption. And corrects timing on the fly on top. If timing delta for knock adaption is close to 0, and if your timing is positive it is considered OK

I think it's also important to have timing close to the same across cylinders, timing in line with typical map targets for octane, minimal timing corrections and good measured torque curve.

[Eldotbe]

Originally Posted by OzBMR

I asked MHD a few specific questions about knock detection, timing corrections and timing delta for knock adaption. This is the answer I got...

The DME reduces timing target in case of pre-knock detection - that's timing delta for knock adaption. And corrects timing on the fly on top. If timing delta for knock adaption is close to 0, and if your timing is positive it is considered OK

I think it's also important to have timing close to the same across cylinders, timing in line with typical map targets for octane, minimal timing corrections and good measured torque curve.

Okay I get ya. On my latest log looks like knock is 0 for whole thing, tiny spike but on 0.1. Thing I noticed this time is that cylinder 1 corrects a lot more than the rest and is slightly behind by 2-3 degrees throughout. Is this something that will improve as the dme adapts?

https://datazap.me/u/eldotbe/mhd?log=0&data=3-19

Couple weeks ago I knew nothing about this, am starting to understand it all now, crazy how much you can learn from some random people on a forum

[kern417]

Originally Posted by Eldotbe

Okay I get ya. On my latest log looks like knock is 0 for whole thing, tiny spike but on 0.1. Thing I noticed this time is that cylinder 1 corrects a lot more than the rest and is slightly behind by 2-3 degrees throughout. Is this something that will improve as the dme adapts?

https://datazap.me/u/eldotbe/mhd?log=0&data=3-19

Couple weeks ago I knew nothing about this, am starting to understand it all now, crazy how much you can learn from some random people on a forum

It's pretty common for cyl1 to lag behind. Seems like there's a characteristic with our engine design. I think it partially has to do with the throttle body location. If it was centered between the cylinders like N55 engines then it'd be easier to get even airflow distribution.

[OzBMR]

Originally Posted by Eldotbe

Okay I get ya. On my latest log looks like knock is 0 for whole thing, tiny spike but on 0.1. Thing I noticed this time is that cylinder 1 corrects a lot more than the rest and is slightly behind by 2-3 degrees throughout. Is this something that will improve as the dme adapts?

https://datazap.me/u/eldotbe/mhd?log=0&data=3-19

Couple weeks ago I knew nothing about this, am starting to understand it all now, crazy how much you can learn from some random people on a forum

What kern417 said about cylinder 1 timing

The log data looks really good Big step up in power, must feel nice.

It looks like 430 WHP and 450 lbft, very high for 99RON

The power and torque curves for that run look identical to when my car had MHD 95_102 Stage 2 OTS, stock downpipe and E30 fuel

Your HPFP rail pressure curve looks like one for E30 fuel too.