[martolino]

Originally Posted by SlowE92

To be honest, the corrections aren't that bad. Log looks clean besides the short term fuel trims and the slight overboost. Are you logging with traction control completely off? If you're running 91 on the 91 octane map then that would explain the cylinder timing corrections. If you were to throw some octane booster in or run higher octane im sure it would clear them up. Your wastegates look good thats why I said only a slight vacuum leak. Fuel trims are trying to compensate for the extra air.

Edit: Check plugs for fowling. Negative short term indicate the mixture is too rich and you are pulling fuel.

The log is with traction control completely off and actually on pretty slippery surface, so the car was definitely spinning wheels. The map is for 91 fuel but I was using 50/50 91 and 93, so the octane must be a little higher (although fuel in my country is notoriously bad, so you never know )
Ok, will sure check for leaks and the sparks. I feel calmer now that you say things aren't that bad.
Thank you very much, appreciate it!

[suspect]

Could I get some opinions on how the car is running please?

https://datazap.me/u/suspect/log487232?log=0&data=3-21

[iqraceworks]

Originally Posted by suspect

Could I get some opinions on how the car is running please?

https://datazap.me/u/suspect/log487232?log=0&data=3-21

Nothing really looks out of whack. It doesn't look like you logged your LPFP...but the HPFP rail pressure looks fine. No timing corrections, so that's good.

Only 6-7psi boost....so I'm assuming this is a stock tune?

I don't see anything that points to any issues or problems

[suspect]

Originally Posted by iqraceworks

Nothing really looks out of whack. It doesn't look like you logged your LPFP...but the HPFP rail pressure looks fine. No timing corrections, so that's good.

Only 6-7psi boost....so I'm assuming this is a stock tune?

I don't see anything that points to any issues or problems

Thank you. LPFP is about 70psi. There is timing correction at lower RPM on cylinder 2 about -2.5. Another time I saw -5.3 on cylinder 6 at about 3000rpm. These corrections don’t last long. It’s running on 93 oct (98RON).

Yes it’s a stock tune, wanted to make sure everything is running ok before doing anything else.

[iqraceworks]

Originally Posted by suspect

Thank you. LPFP is about 70psi. There is timing correction at lower RPM on cylinder 2 about -2.5. Another time I saw -5.3 on cylinder 6 at about 3000rpm. These corrections don’t last long. It’s running on 93 oct (98RON).

Yes it’s a stock tune, wanted to make sure everything is running ok before doing anything else.

A small timing correction that goes away quick on a single cylinder isn't much to worry about. Now if you start seeing 3+ degrees of correction on multiple cylinders...than something is going on.

Everything looks fine. Just keep in mind, when you start running a tune with more timing and boost, you are going to start taxing things more. Make sure you have a new set of coils, and new 1-steg colder spark plugs capped at .020". That should keep you from having any misfire issues (most common problem everyone seems to have).

Other than that, you should be good to go.

[suspect]

Originally Posted by iqraceworks

A small timing correction that goes away quick on a single cylinder isn't much to worry about. Now if you start seeing 3+ degrees of correction on multiple cylinders...than something is going on.

Everything looks fine. Just keep in mind, when you start running a tune with more timing and boost, you are going to start taxing things more. Make sure you have a new set of coils, and new 1-steg colder spark plugs capped at .020". That should keep you from having any misfire issues (most common problem everyone seems to have).

Other than that, you should be good to go.

After a stage 1 91oct/95ron tune I’m now seeing multiple timing corrections on all cylinders (even those with new injectors) when cruising or part throttle. Mostly within -3degrees but rarely -4 to -6. They went away when throttle position was closer to 80 but was too scared to let it past 4000rpm. Seems normal though?

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

https://www.e90post.com/forums/showthread.php?t=1647039

Coils are nearly new and so are the OEM plugs. Running on 99ron (93+oct). Will get some logs soon.

[lowrydr310]

Originally Posted by suspect

After a stage 1 91oct/95ron tune I’m now seeing multiple timing corrections on all cylinders (even those with new injectors) when cruising or part throttle. Mostly within -3degrees but rarely -4 to -6. They went away when throttle position was closer to 80 but was too scared to let it past 4000rpm. Seems normal though?

I have similar timing corrections on my car as you describe (logs are a page or two back?) and I'm also on new coils and plugs. MHD Stage 1 OTS 91ACN.

Mine happen at low throttle position, before I do my WOT pull. At higher RPMs there are no more corrections. Both short and long term fuel trims have some differences between bank 1 and bank 2 but nothing I'm too worried about. Maybe some injectors aren't flowing properly? Old O2 sensors? Old VANOS solenoids slow to respond? I even tried a half tank of 100 octane and reset adaptations and still see those corrections.

[suspect]

Originally Posted by lowrydr310

I have similar timing corrections on my car as you describe (logs are a page or two back?) and I'm also on new coils and plugs. MHD Stage 1 OTS 91ACN.

Mine happen at low throttle position, before I do my WOT pull. At higher RPMs there are no more corrections. Both short and long term fuel trims have some differences between bank 1 and bank 2 but nothing I'm too worried about. Maybe some injectors aren't flowing properly? Old O2 sensors? Old VANOS solenoids slow to respond? I even tried a half tank of 100 octane and reset adaptations and still see those corrections.

Is this what you are talking about?
https://datazap.me/u/lowrydr310/log-...11-12-13-14-21
https://datazap.me/u/lowrydr310/temp...11-12-13-14-21
https://datazap.me/u/lowrydr310/temp...11-12-13-14-21

Its weird your timing corrections are happening during WOT in two logs and the other log is completely clean. I dont think it is your injectors because your AFR shoots to 234 quickly which is a good sign. Not sure about VANOS. Did you ever get a code? I did then cleaned them and not had one since but might be related.


Heres my log:
https://datazap.me/u/suspect/shell-9...0-11-13&solo=0

Most timing corrections are outside boost except for cylinder 2 only once. Timing corrections are non-existent under 50% accelerator.

Your STFT are further apart but mine are closer and I am still getting timing corrections so not sure if that points to the problem. A bit hard to compare because your IAT is higher. Have you tried fuel from a different brand? I reset lambda sensor and regulation then tried quarter of Shell instead of the usual brand today and I think there are less corrections.

[suspect]

Originally Posted by suspect

Is this what you are talking about?
https://datazap.me/u/lowrydr310/log-...11-12-13-14-21
https://datazap.me/u/lowrydr310/temp...11-12-13-14-21
https://datazap.me/u/lowrydr310/temp...11-12-13-14-21

Its weird your timing corrections are happening during WOT in two logs and the other log is completely clean. I dont think it is your injectors because your AFR shoots to 234 quickly which is a good sign. Not sure about VANOS. Did you ever get a code? I did then cleaned them and not had one since but might be related.


Heres my log:
https://datazap.me/u/suspect/shell-9...0-11-13&solo=0

Most timing corrections are outside boost except for cylinder 2 only once. Timing corrections are non-existent under 50% accelerator.

Your STFT are further apart but mine are closer and I am still getting timing corrections so not sure if that points to the problem. A bit hard to compare because your IAT is higher. Have you tried fuel from a different brand? I reset lambda sensor and regulation then tried quarter of Shell instead of the usual brand today and I think there are less corrections.

Tried V9 stg1 and got a cleaner log. V10 is definitely more aggressive.

MHD Datalog Guide says
"Corrections that seem to be random, or never happen at the same load of up -3° are deemed to be acceptable as long as it’s not across multiple cylinders at a time."

Even on V9 corrections mostly happen between 35 and 60 load across multiple cylinders just like V10 except with V10 more cylinders are corrected at the same time. i.e. Not random, not more than -3 degrees but across multiple cylinders are the same time. 2/3 unacceptable.

I probably do need colder spark plugs now. Does anyone have low load logs with OEM spark plugs and stage 1 95/98 (91/93oct) for a car without suspected issues?

[sleeeper90]

Hi, i recently bought this car and I am pretty new to reading logs, i just want to make sure everything is working properly before I do anything else to it. Also if you see anything i can fix here please let me know. Thanks!

2011 335i, MHD w/bef, VRSF intercooler, VRSF catless dp, Colder plugs, Piping, intake, Precision 2.5 lpfp



https://datazap.me/u/sleeper90/log-1...23-24-25-26-27

[lowrydr310]

Originally Posted by suspect

Your STFT are further apart but mine are closer and I am still getting timing corrections so not sure if that points to the problem. A bit hard to compare because your IAT is higher. Have you tried fuel from a different brand? I reset lambda sensor and regulation then tried quarter of Shell instead of the usual brand today and I think there are less corrections.

I tried several brands of fuel, including a half a tank of 100 octane and it made no difference. I was wondering about those IATs... they definitely go up a lot during the WOT run, I've been wanting to upgrade the intercooler.

[suspect]

Originally Posted by lowrydr310

I tried several brands of fuel, including a half a tank of 100 octane and it made no difference. I was wondering about those IATs... they definitely go up a lot during the WOT run, I've been wanting to upgrade the intercooler.

Have you tried colder spark plugs?

[lowrydr310]

Originally Posted by suspect

Have you tried colder spark plugs?

No. OEM Bosch. I didn't think colder plugs were needed for a modest tune such as the MHD Stage 1 OTS.

[SG335Xi]

Would love for someone to look at my log and tell me if there are any major concerns.

I am planning on replacing the o2 sensors soon - 3/4 are original as far as I know.

2008 - FBO - 82k miles; manual... MHD Stage 2+; Would like to change out the turbos as I imagine they're getting tired.

https://datazap.me/u/sg335xi/log-170...=3-14-15-20-24

[N54_Sauce]

this is probably a shot in the dark but

how does this look? anything that could need fixing? which log is better?

n54 single turbo, gtw3884R .81ar, stock motor dual wastegates, on 93 pump gas, will be installing a 4 port soon. Car was tuned by previous owner to 18psi wondering if I should get a retune.


https://datazap.me/u/n54sauce/3rd-ge...25-26-27-29-30

https://datazap.me/u/n54sauce/3rd-ge...26-27-28-29-30

[Dazedbear]

I have a 2011 335i with 69k miles on it. I have owned it a year and a half. Currently running a MHD stage 2+ tune. I have been having some fueling issues, I went through 2 HPFP (remanufactured from FCPeuro). Just put a brand new oem HPFP in 2 weeks ago. I know i should be no where near the limit with the HPFP but am concerned.

Mod list:
New ignition coils / spark plugs 1 step colder
VRSF metal charge pipe and turbo inlet pipe
Ingen cold air intake
Wagner performance 7.5” intercooler
VRSF high flow catted down pipe
Muffler swap to high flow and lighter weight
All pulleys replaced including vibration damper and serpentine belt
ECS performance coil-overs

I do not know if I should go with something like a fuel-it stage 2 to maybe help out the HPFP. I have attached a datalog below with a 3rd gear pull, my timing corrections have me concerned but are within 3 degrees so unsure.

Ideally I would like to focus on maintenance this year before getting ready for bigger turbos next year but my fueling situation makes me nervous. Any insights would be appreciated.

https://datazap.me/u/dazedbear/stage...27&tmax=247.85

[suspect]

Originally Posted by lowrydr310

No. OEM Bosch. I didn't think colder plugs were needed for a modest tune such as the MHD Stage 1 OTS.

I might still try them.

[e92Diego]

https://datazap.me/u/e92diego/who-kn...ta=3-18&solo=3

I've been struggling to figure out my misfire issues. spark plugs and coils replaced about 500 miles ago, injectors have been replaced around the same time as well thinking this was the answer. I've been having an inconsistent jerking in the 2k-3k range in 5th and 6th gear mostly but can see it in 2-4 if i stay in gear long enough. during my log however i did not experience this issue so i can't say for sure if it's the hpfp or possibly something else hence why i am seeking assistance. my log is with traction control fully off.
mods: cp+bov, catless downpipes, 7in intercooler, intake

[SlowE92]

Originally Posted by Dazedbear

I have a 2011 335i with 69k miles on it. I have owned it a year and a half. Currently running a MHD stage 2+ tune. I have been having some fueling issues, I went through 2 HPFP (remanufactured from FCPeuro). Just put a brand new oem HPFP in 2 weeks ago. I know i should be no where near the limit with the HPFP but am concerned.

Mod list:
New ignition coils / spark plugs 1 step colder
VRSF metal charge pipe and turbo inlet pipe
Ingen cold air intake
Wagner performance 7.5” intercooler
VRSF high flow catted down pipe
Muffler swap to high flow and lighter weight
All pulleys replaced including vibration damper and serpentine belt
ECS performance coil-overs

I do not know if I should go with something like a fuel-it stage 2 to maybe help out the HPFP. I have attached a datalog below with a 3rd gear pull, my timing corrections have me concerned but are within 3 degrees so unsure.

Ideally I would like to focus on maintenance this year before getting ready for bigger turbos next year but my fueling situation makes me nervous. Any insights would be appreciated.

https://datazap.me/u/dazedbear/stage...27&tmax=247.85

Your HPFP looks fine, rail pressure doesn't dip during WOT. You are not hitting boost target, and your WGDC is high. More than likely a boost leak.

[SlowE92]

Originally Posted by e92Diego

https://datazap.me/u/e92diego/who-kn...ta=3-18&solo=3

I've been struggling to figure out my misfire issues. spark plugs and coils replaced about 500 miles ago, injectors have been replaced around the same time as well thinking this was the answer. I've been having an inconsistent jerking in the 2k-3k range in 5th and 6th gear mostly but can see it in 2-4 if i stay in gear long enough. during my log however i did not experience this issue so i can't say for sure if it's the hpfp or possibly something else hence why i am seeking assistance. my log is with traction control fully off.
mods: cp+bov, catless downpipes, 7in intercooler, intake

Are you doing pulls with traction control completely off? It looks like you're overboosting and it's probably cutting your throttle, which would explain the jerkiness.

Edit: Didn't read the part where you said TC completely off. Can you post a log and include the throttle position?

[e92Diego]

Originally Posted by SlowE92

Are you doing pulls with traction control completely off? It looks like you're overboosting and it's probably cutting your throttle, which would explain the jerkiness.

Edit: Didn't read the part where you said TC completely off. Can you post a log and include the throttle position?

I’ll go through another pull today and include what you asked. Do you think a boost leak could be causing these intermittent misfires?

[N54_Sauce]

Anyone?

Originally Posted by N54_Sauce

this is probably a shot in the dark but

how does this look? anything that could need fixing? which log is better?

n54 single turbo, gtw3884R .81ar, stock motor dual wastegates, stage 2 fuel it pump, on 93 pump gas, will be installing a 4 port soon. Car was tuned by previous owner to 18psi wondering if I should get a retune.


https://datazap.me/u/n54sauce/3rd-ge...25-26-27-29-30

https://datazap.me/u/n54sauce/3rd-ge...26-27-28-29-30