[InstigatorX]

AA DP, TU PUMP, 93 octane fuel, MHD Stage 2 (91 oct map)

Thoughts?

https://datazap.me/u/instigatorx/log...=0&data=3-6-18

[Skyhigh]

Looks excellent.

[sameer25]

Originally Posted by sameer25

Hey can anyone give me some feedback on my logs. So i am on a Stage 2+ e40 tune on MHD. My mods are TU pump with VRSF DP (stock turbo). My boost was not hitting the target so i thought it might have been the intake choking it. I peak around 20ish psi and then drop to 18 closer to redline. I dont have TCU limiter removed could that cause this?: https://datazap.me/u/sameer25/e40-tune?log=0&data=5-26

After i got a full catback remus exhaust and a RRP intake+inlet (MST clone) i was still getting that issue. Anyone have any feedback. here are two different logs, one at night and other in the day.
https://datazap.me/u/sameer25/e40-tu...og=0&data=5-26
https://datazap.me/u/sameer25/e40-st...og=0&data=5-26

anyone....?

Skyhigh i saw you ran into similar issues earlier in the thread

[Skyhigh]

Yes. No one here provided feedback to my questions. Research in the meantime however shows this is a normal and common behavior on Stage 2+, not only on MHD!! It is not a boost leak, not an issue - just a normal behavior apparently for that map, which is more pronounced on lower gears and decreases on higher gears. (My logs are on 3rd gear and you will see even higher deviation than yours).

What is not ok however is the mysterious dip in timing mid range, ref my logs, which others experience too on this map (and St2 E30 to a lesser extent).
I pinged MHD to explain. Weeks went by and no feedback…
I don't see it in your log, however you have some pre-knock detection and timing pull which you should be aware of and maybe address. Not huge, but it is there, in both logs. Maybe you need just a little bit more E.

[thedarthluda]

So i just flashed my first tune MHD Stage 1 , im not 100% sure how to log but and i had heavy traffic so i put into manual either 3/4th and did the WOT. I had traction on as it was pouring down with rain , and i've literally just flashed the car. But wanted to know if all is ok? i notice theres some weird timing at the start of the pull, is this ok?

Also i have flashed 91Oct/95 Ron while using 99 ron fuel , looking at htese logs should i try the 98 ron map?

Many Thanks in advance and apologies im new to all of this!

https://datazap.me/u/andyb313/first-...32-33-34-35-36

[Skyhigh]

Originally Posted by thedarthluda

So i just flashed my first tune MHD Stage 1 , im not 100% sure how to log but and i had heavy traffic so i put into manual either 3/4th and did the WOT. I had traction on as it was pouring down with rain , and i've literally just flashed the car. But wanted to know if all is ok? i notice theres some weird timing at the start of the pull, is this ok?

Also i have flashed 91Oct/95 Ron while using 99 ron fuel , looking at htese logs should i try the 98 ron map?

Many Thanks in advance and apologies im new to all of this!

https://datazap.me/u/andyb313/first-...32-33-34-35-36

Your log looks nearly perfect and you can absolutely give Stage 2 RON 98 a try. You have no octane issue in the current setup, that's for sure. Just make sure next time to hold WOT up to about at least 6500 RPM. You have let go a bit too early here.

The only thing I notice is that your boost is not keeping up with the target that well, despite low WGDC... which it should be at this very "low-end" COTS map... Something to keep an eye on in the next logs.

[thedarthluda]

Originally Posted by Skyhigh

Your log looks nearly perfect and you can absolutely give Stage 2 RON 98 a try. You have no octane issue in the current setup, that's for sure. Just make sure next time to hold WOT up to about at least 6500 RPM. You have let go a bit too early here.

The only thing I notice is that your boost is not keeping up with the target that well, despite low WGDC... which it should be at this very "low-end" COTS map... Something to keep an eye on in the next logs.

thanks for the info, i heard it may take some time to adjust and i'd literally just flashed it, also having a bit of traction issues in the rain etc. I'm off out tonight so ill try and get another pull and hold it longer. When i get over 6500 should i let off the trottle or move up a gear?

[Skyhigh]

Doesn't really matter, but if you have a chance - shift up and continue a bit. If not - let go, but at least do 6500-ish.

[sameer25]

Originally Posted by Skyhigh

Yes. No one here provided feedback to my questions. Research in the meantime however shows this is a normal and common behavior on Stage 2+, not only on MHD!! It is not a boost leak, not an issue - just a normal behavior apparently for that map, which is more pronounced on lower gears and decreases on higher gears. (My logs are on 3rd gear and you will see even higher deviation than yours).

What is not ok however is the mysterious dip in timing mid range, ref my logs, which others experience too on this map (and St2 E30 to a lesser extent).
I pinged MHD to explain. Weeks went by and no feedback…
I don't see it in your log, however you have some pre-knock detection and timing pull which you should be aware of and maybe address. Not huge, but it is there, in both logs. Maybe you need just a little bit more E.

How do you know i have pre knock detention? (as in which data were you looking at? i never see anything in knock interpolation%)

I only have the boost deviation issue in the e40 map. here is stage 2+ hitting full boost for me:https://datazap.me/u/sameer25/log-16...=2&data=6-7-26

I wonder what the issue is. The tune doesnt seem to increase the Wgdc. on my e40 tune it stays around 89-90% on the top end. I know if the wgdc was more like 93-95% it would hit the target boost. Might have to reach out to MHD to see if they can help? MHD Tuning

[Skyhigh]

Pre-knock - look at Timing delta for knock…

Boost - yes, the same pathing puzzled me too - boost deviation, however WGDC remains relatively low (from memory 92-93% max). I don’t know why. But most people on St 2+ struggle to keep up with the boost. I found numerous threads and logs showing this, including on BM3. Spoke with others too and saw the same in their logs. Seems to be a common and “normal” thing, stock turbo just running out of steam….

[sameer25]

Originally Posted by Skyhigh

Pre-knock - look at Timing delta for knock…

Boost - yes, the same pathing puzzled me too - boost deviation, however WGDC remains relatively low (from memory 92-93% max). I don’t know why. But most people on St 2+ struggle to keep up with the boost. I found numerous threads and logs showing this, including on BM3. Spoke with others too and saw the same in their logs. Seems to be a common and “normal” thing, stock turbo just running out of steam….

hmm i see the timing delta. Is there a parameter that just shows the knock count? i thought that would be knock interpolation% but it never shows anything.

It might be that the turbo is running out of steam but I've also seem other people run 20-21 psi on e40, namely kern417 :

(10:25 time stamp)

kern417 if you see this, could you see any reason me and Skyhigh are struggle to hit target boost on ots mhd stage 2+ e40 map?

[Skyhigh]

sameer25

There is no count as there is no event, as I understand. This is however “pre-knock” detection as I call it and understand it and it is pulling timing collectively to prevent knock. Ideally it should be 0 all along. Yours is not dramatic and nothing scary, but it is there to indicate there is room for improvement.

Regarding boost - I reckon many factors apply - ambient pressure for example, as well as car specifics. But if you do a lot of browsing back in this thread as I did and check every E40 log posted, you will see this phenomena almost everywhere. You will also find some old threads where people discuss it.

[HM-2]

Originally Posted by thedarthluda

thanks for the info, i heard it may take some time to adjust and i'd literally just flashed it, also having a bit of traction issues in the rain etc. I'm off out tonight so ill try and get another pull and hold it longer. When i get over 6500 should i let off the trottle or move up a gear?

Done anything WRT moving onto go-flat tyres or having a proper differential fitted? The M Perf diff has 100% been the best modification I've made to my car for UK weather.

[thedarthluda]

Originally Posted by HM-2

Done anything WRT moving onto go-flat tyres or having a proper differential fitted? The M Perf diff has 100% been the best modification I've made to my car for UK weather.

Not yet , its only stage 1 but will be throwing a sports cat on their soon, if the tractions too bad then i may consider the LSD. When it comes to wet weather i tend to drive a bit more sensibly anyway. How much is difference is the diff making to traction? did ou try any 0-60s with and without?

[4coupe440i]

Originally Posted by 4coupe440i

While still learning I am trying to understand what could be the reason for my throttle closures between 3000 - 4500 rpm.

I watched this video from kern417:

As I understand overboost scenario's are a common reason for DME throttle closures. When I look at my datalog I do see some overboost values in the 3000 - 4500 rpm range. Not sure if they are the sole reason for the throttle closure.

Furthermore kern417 mentions load limits & torque limits as another reason for throttle closure. According to MHD data channel "torque lim. 1" this is hit several times.

I also see the load limits are also hit a couple of times and also seem to coincide with the throttle closure.

As a newbie I could make the very positive conclusion: my engine is generating too much power & torque between 3000 - 4500 rpm for what MHD ron98 stage 1 is allowing thus it intervenes via throttle closures.

Does that conclusion make sense?

[nosam1g]

pure850 installed today.. here are some logs from stg 2 MHD OTS Map

https://datazap.me/u/nosam1g/log-169...47-48-49-50-51


Base Map .. No corrections on 91 ^^ Dustin Tune Good Stuff Man!

https://datazap.me/u/nosam1g/log-169...-51-55&solo=37

[BryanB58]

https://datazap.me/u/elb58/mein?log=0&data=22-33

[BryanB58]

^ any body can look over my log seems to look fine to me.

[suncty]

This is the 2021 Supra DAW Flow Max Turbo.
The HPFP is genuine, and I am now waiting for the Dorch HPFP.
I plan to gradually increase the boost.
It is BM3 + CustomRom + CustomMap.
As part of the track driving, several logs are posted for reference.

https://www.bootmod3.net/log?id=6529...0b43b452b233ae
https://www.bootmod3.net/log?id=6529...0b43b07e4fa576
https://www.bootmod3.net/log?id=6529...729be94de0fed1
https://www.bootmod3.net/log?id=6529...729be94de0fef0

[M2C]

Originally Posted by suncty

This is the 2021 Supra DAW Flow Max Turbo.
The HPFP is genuine, and I am now waiting for the Dorch HPFP.
I plan to gradually increase the boost.
It is BM3 + CustomRom + CustomMap.
As part of the track driving, several logs are posted for reference.

https://www.bootmod3.net/log?id=6529...0b43b452b233ae
https://www.bootmod3.net/log?id=6529...0b43b07e4fa576
https://www.bootmod3.net/log?id=6529...729be94de0fed1
https://www.bootmod3.net/log?id=6529...729be94de0fef0

Which kind of fuel?

[M2C]

Originally Posted by BryanB58

https://datazap.me/u/elb58/mein?log=0&data=22-33

Setup?

[MarkMckerlie]

Hi, could someone please take a look at this log?
My Dorch S2 hpfp has begun doing this weird issue where it will target higher rail pressure than it should be.

The car has XDI injectors that's why pressure is down at low loads.
Is this a sign of a failing hpfp? it seems to be worse when the hpfp gets warmer.

https://www.bootmod3.net/log?id=6537...0297216a36bdad

I've noticed that it's when the closed loop fuel trims turn on it goes high pressure, but not every time.

Thankyou Mark