[Eriksson3_3]

Originally Posted by Bimmer_Bro

Anytime. Try version 7 for fun. Does not cost anything to switch versions.
With your current mods you should be on the stage 2 map which is downpipes and oem intercooler.
2+ is for downpipes and upgrade intercooler.

Which intercooler did you go with? OEM connections? If so make sure to purchase new o-rings before install. I think the green one is hot side and the black one is cold side (exit)

I got the VRSF 5" stepped. I ordered new o rings. I hope by the time I put it on and do spark plug service it feels quicker. I'm pretty sure my expectations were just way too high for a stage 2+ N54.

[Chrium]

hello , can someone please take a look at my log , i have a strange exhaust tone change between 1700 rpm and 2100 rpm, the car also have a slow throttle reaction, and the car is jerking when light throttle is applied,
https://datazap.me/u/lastchrium/log-...14-15-20-21-22
the logs is done and the exhaust tone happed in the third and 4th gear.
PS : AFR delay between bank 1 and 2 at deceleration to 234 before and even after injector replacement.
what i have done so far :
Valve cover , Injectors index 12 , 2 Step colder NGK gapped to 0,0022, Eldor coils, BMS Pcv valve upgrade, Upgraded sillicone vacuum Lines.
the car is Fbo MHD stage 2+ 91 Oct and the fuel used is 93 Octane
Tune Mod List :
Wagner evo 1 Intercooler 5'', Chargepipe and BOV FORGE, BMS Cone Intake, Walbro 450 L/H LPFP

[F13.KENN]

Any idea why my fuel low pressure is erratic and dips as low as 58psi??

https://datazap.me/u/schwarze92/e85-...&data=3-24

Im single turbo, full e85 and currently in tuning process with Ken @ wedge

Dual walbro 450s
Phoenix racing manifold with 550cc injectors
Reflex lite PI controller
Stock fuel lines
Fuel pressure regulator is just over 2 years old

[n54wtf]

I believe my turbos are slow to hit target boost.

MHD v7 Stage 2+
https://datazap.me/u/idkbmw/log-1663...og=0&data=3-23

DCI, ER Chargepipe, HKS bov, VRSF intercooler, arm downpipes, silicone vacuum lines, new boost solenoids, walnut blasting done less than 500 miles ago.

I have done most preventive maintenance mods aside from lpfp.

Thoughts, comments, concerns are very much appreciated.

[vadonchez]

hi guys

I'm french and own a z4 35IS for few months.
I just installed MHD tune on my car with v9 stage 1+ E50 map
My car is stock exept for FMIC 5" WAGNER EVO1

First thanks to all for your forum it's awesome, we don't have such community in france wher mods aren't very widespreads...

I took time to read and analyse lots of logs from this thread and understood lot of things so again thanks for that.

Please find my first logs here:
https://datazap.me/u/vadonchez/log-1663599158?log=0&data=3-4-6-7-8-9-10-11-13-20-21-22-27-28&zoom=106-200

For me every things seems to be ok, boost follow the "target boost" pretty well, WDGC stay around 50% , rail pressure stay above 2000psi.
My STFT are at -10% during WOT but I'm not sure that I really have E50 mix and LTFT is at 0%.
From what i can see only "issue" is post shift timing correction but it seems that lot of MHD users are concerned with that.

If somebody could take time to take a look at my log i will be very happy.

Thanks & sorry for my english I know it's not perfect...

[vadonchez]

ok tried V10 1+ E50 WTF this map is amazing but.....after some ride whith it i got this FU.....G!!! whining sound from turbo at low rpm between 1.5 and 3K....

My Z4 has only 27k miles on odometer .

Tried to go back to oem IC with no change ....

So I have to accept it and crossed finger that my turbo don't die quickly.

SO decided to go for STAGE 1 V10 E50 only and surprised to see that boost target is only 13psi when V10 stage 1+ target for 16.5psi, really big difference.yet power is pretty good even if it's slower than 1+ but still better than my oem map (340hp because 35IS)

Logs after only 15miles ride are pretty good exept for timing correction on post shift. Have to change my coils and plugs and see if timing correction still there.

Here are my 2 logs :

https://datazap.me/u/vadonchez/log-1...0&zoom=137-221
https://datazap.me/u/vadonchez/log-1...og=0&data=3-20

Bye

[Saif2018]

Originally Posted by vadonchez

ok tried V10 1+ E50 WTF this map is amazing but.....after some ride whith it i got this FU.....G!!! whining sound from turbo at low rpm between 1.5 and 3K....

My Z4 has only 27k miles on odometer .

Tried to go back to oem IC with no change ....

So I have to accept it and crossed finger that my turbo don't die quickly.

SO decided to go for STAGE 1 V10 E50 only and surprised to see that boost target is only 13psi when V10 stage 1+ target for 16.5psi, really big difference.yet power is pretty good even if it's slower than 1+ but still better than my oem map (340hp because 35IS)

Logs after only 15miles ride are pretty good exept for timing correction on post shift. Have to change my coils and plugs and see if timing correction still there.

Here are my 2 logs :

https://datazap.me/u/vadonchez/log-1...0&zoom=137-221
https://datazap.me/u/vadonchez/log-1...og=0&data=3-20

Bye

Boost isn't the only factor in producing power, fueling, timing also plays a big part. Saying that Stage 1+ is more aggressive and targets higher boost in general. Make sure you log timing cylinder 1. Have you done your plugs and coils recently? You've got big timing drops for E50

Doubt your turbos going to die from whining at stage 1/1+, mine has been whining with almost 20psi for almost a year or more, still boosting fine.

[vadonchez]

thanks for your reply
My coils have never been changed but my car has only 27k miles
My plugs were changed in 2014 .
I plan to change coil & plug quickly but still surprised with timing correction especially that i run E60 in reality.
whatever mhd map i choose, timing correction still there....

[Saif2018]

Originally Posted by vadonchez

thanks for your reply
My coils have never been changed but my car has only 27k miles
My plugs were changed in 2014 .
I plan to change coil & plug quickly but still surprised with timing correction especially that i run E60 in reality.
whatever mhd map i choose, timing correction still there....

Since your IAT's aren't bad, I would say its coils/plugs or injectors causing the corrections. Start with Coils and plugs.

[vadonchez]

STFT/AFR between bank 1 & 2 are the same so I think that injectors are good.
If one of them was bad I imagine that AFR or STFT should be bad too.

It seems that this "post shift timing correction" problem is pretty comon as I found few post speaking about that:

https://*********************/thread...end-this.2123/

https://www.e90post.com/forums/showthread.php?t=740279

[Saif2018]

Originally Posted by vadonchez

STFT/AFR between bank 1 & 2 are the same so I think that injectors are good.
If one of them was bad I imagine that AFR or STFT should be bad too.

It seems that this "post shift timing correction" problem is pretty comon as I found few post speaking about that:

https://*********************/thread...end-this.2123/

https://www.e90post.com/forums/showthread.php?t=740279

Lazy AFR that doesn't shoot up to 234 as soon as you lift off is a typical sign of leaky injectors. Some degree of post shift corrections are common but in my opinion it shouldn't drop that low on E50

[Knob]

My E90 335xi N54 is kind of stuttering if you accelerate, most likely you can feel it, when you push the throttle slightly in low revs, it happens in Stage 0 and Stage 1.

My car has no heavy mods, only ftp pcv, spark plugs one step colder, new injectors (index 12), 4x lambda probes and regular maintenance stuff:

This is Stage 0:
https://datazap.me/u/frederik/log-16...data=3-4-20-23

This is Stage 1+:
https://datazap.me/u/frederik/autoba...0&data=3-20-23

You can see throttle is "shaking" a bit sometimes, or it feels like its misfiring while full/half throttle.

[whyzee125]

Originally Posted by Saif2018

https://datazap.me/u/shelim2020/v10-...=0&data=3-4-23

V10 JSR custom tune

I'm aware of the timing corrections, but any further input would be much appreciated guys.

It's a little hard to read. Accelerator position went down mid pull. Timing corrections across all 6 cylinders suggest that there's inadequate octane. Is this a 93 oct map? LPFP, HPFP, IAT all look good.

[Bimmer_Bro]

Originally Posted by Knob

My E90 335xi N54 is kind of stuttering if you accelerate, most likely you can feel it, when you push the throttle slightly in low revs, it happens in Stage 0 and Stage 1.

My car has no heavy mods, only ftp pcv, spark plugs one step colder, new injectors (index 12), 4x lambda probes and regular maintenance stuff:

This is Stage 0:
https://datazap.me/u/frederik/log-16...data=3-4-20-23

This is Stage 1+:
https://datazap.me/u/frederik/autoba...8;data=3-20-23

You can see throttle is "shaking" a bit sometimes, or it feels like its misfiring while full/half throttle.

Lots of timing corrections. What fuel Are you running?
You also do not need to be running colder plugs. It's a very common miss conception.The oem Bosch 3 prong work best and no need to worry about gap. I am stage 2+ and bosche give me the best results.
These cars are very sensitive to plug gap if you are running NGK.
Your intake temps also climb like crazy. Guessing you are still on the oem intercooler? They are terrible even stock but once it's dented up they become a lot worse.
Stage 1+ requires upgraded intercooler.

[Quick335XI]

Can someone please take a look at this log? My car was running flawlessly before I dropped it off in long term airport parking for 4 days... I came back and fired it up and started getting 29D1 codes, Combustion misfires cylinder 5. Car is running really bad... stuttering, hesitating etc. ugh. This log is me driving normal doing a manual log, from 1st to 3rd year... does anything stand out?? O2 sensors replaced a few months ago. i just went through the B58 vargas coil conversion kit, the car was running amazing until now:

https://datazap.me/u/quick335xi/log-...og=0&data=3-20

[Knob]

Originally Posted by Bimmer_Bro

Lots of timing corrections. What fuel Are you running?
You also do not need to be running colder plugs. It's a very common miss conception.The oem Bosch 3 prong work best and no need to worry about gap. I am stage 2+ and bosche give me the best results.
These cars are very sensitive to plug gap if you are running NGK.
Your intake temps also climb like crazy. Guessing you are still on the oem intercooler? They are terrible even stock but once it's dented up they become a lot worse.
Stage 1+ requires upgraded intercooler.

I´m running a 91 octane map (95 octane in Germany). To be honest, I used oem spark plugs and didn´t a feel change to the colder ones. I also have the oem intercooler, I know need a bigger one, but right now the temps are pretty low and soon I can get another log. I made this when it was about 30° Celsius (86 Fahrenheit).


But it doesn´t really make a difference what I´m changing, these "misfires" are pretty much there all the time.

Oh, I should say the Stage 1+ log was made with OEM spark plugs, in the meantime I´ve changed spark plugs and after I didn´t get better results, I flashed back to Stage 0.

[vadonchez]

Originally Posted by Saif2018

Lazy AFR that doesn't shoot up to 234 as soon as you lift off is a typical sign of leaky injectors. Some degree of post shift corrections are common but in my opinion it shouldn't drop that low on E50

I just received an email from MHD .
I had send him an email with few logs stage 1+ and stage 1.

He said to me that every thing is good and that timing correction are due to throttle closure during gear change in order to keep boost into DME target causing some air intake turbulence.
But for him nothing to worry about....

Strange to me but I think that MHD has a lot more background about map tune than me so let's drive and enjoy the car even if I will have new NGK coils & sparkplugs this week....

[vadonchez]

Originally Posted by Quick335XI

Can someone please take a look at this log? My car was running flawlessly before I dropped it off in long term airport parking for 4 days... I came back and fired it up and started getting 29D1 codes, Combustion misfires cylinder 5. Car is running really bad... stuttering, hesitating etc. ugh. This log is me driving normal doing a manual log, from 1st to 3rd year... does anything stand out?? O2 sensors replaced a few months ago. i just went through the B58 vargas coil conversion kit, the car was running amazing until now:

https://datazap.me/u/quick335xi/log-...og=0&data=3-20

Your throttle stay around 15% only when your pedal stay around 20% only too. If you WOT during this log it seems that you could have a problem whit your pedal sensor but I'm not an expert.

[Quick335XI]

Originally Posted by Quick335XI

Can someone please take a look at this log? My car was running flawlessly before I dropped it off in long term airport parking for 4 days... I came back and fired it up and started getting 29D1 codes, Combustion misfires cylinder 5. Car is running really bad... stuttering, hesitating etc. ugh. This log is me driving normal doing a manual log, from 1st to 3rd year... does anything stand out?? O2 sensors replaced a few months ago. i just went through the B58 vargas coil conversion kit, the car was running amazing until now:

https://datazap.me/u/quick335xi/log-...og=0&data=3-20

Well, I took the car to a local shop figuring the O2 sensors were bad and they said the compression is really low on cylinder 5... checked a couple others and they were low too. Apparently my motor might be bad. Going to get a second opinion then I guess I'll sell or part out. Kind of in shock...

[sbmws]

335 N54 FBO with St2 in line fuel pump
MHD E40 V7

Just flashed and only managed to do 1 WOT run in 3rd and about 4-5 WOT runs in 2nd to redline prior to this log so I'm hoping the car had adapted but there's a chance it hadn't yet fully

Thats a big timing correction on Cyl 4

Guess I need so more logs


https://datazap.me/u/sj/log-1664802931?log=0&data=3-19

[sbmws]

Tried v5 E40

Looks like I get less timing corrections than V7 but I'm still having some

Also looks to be straining my LPFP a little more but still ok

Any feedback appreciated

https://datazap.me/u/sj/log-16648888...-6-7-8-9-10-19

[Knob]

Originally Posted by Knob

I´m running a 91 octane map (95 octane in Germany). To be honest, I used oem spark plugs and didn´t a feel change to the colder ones. I also have the oem intercooler, I know need a bigger one, but right now the temps are pretty low and soon I can get another log. I made this when it was about 30° Celsius (86 Fahrenheit).


But it doesn´t really make a difference what I´m changing, these "misfires" are pretty much there all the time.

Oh, I should say the Stage 1+ log was made with OEM spark plugs, in the meantime I´ve changed spark plugs and after I didn´t get better results, I flashed back to Stage 0.

Maybe this helps anyone, but in my case it was caused by my transfer case (xDrive)