[Saif2018]

Originally Posted by Quinnhogue7

Nice thank uou, I’ll look through that now. Could the timing corrections be coming by from the fact that the wastegates are on their last leg? Car is WAY down on boost during normal driving and slightly down on WOT.

Timing corrections are caused by IAT's climbing, plugs, coils, bad fuel etc

You most likely have boost leak, would suggest following this guide

https://bmwtuning.co/bmw-n54-30ff-en...-repair-guide/

Then plugs, coils etc

[MfknBimmerBoy]

https://datazap.me/u/mfknbimmerboy/l...og=0&data=3-19
https://datazap.me/u/mfknbimmerboy/l...og=0&data=3-19

Got a chance to do 2 logs before I put the car away for the winter.

Stage 2+ 93 octane v7.1

Just upgraded Lpfp because lp sensor was dropping below 50 (barely)

Looking to flash to ethanol maps e40/e60 in the spring. Look alright to do?

pressure looks good to me now. Trims look rich... not sure if thats too rich or what to do about that but if anyone sees anything or has any input please let me know!

Mods:
70k miles, walnut blast at 60k. Bms dci, 5 in vrsf intercooler, stock inlets, stock turbos, one step colder plugs, new delphi coils, vrsf downpipes, bmw performance exhaust, bms chargepipe, tial bov, bov adapter, bmp bucketed stage 2 fuel pump, billet pcv, x2 oil catch can, cowl filters, bms clutch valve, bms clutch stop

[dpaul]

Originally Posted by MfknBimmerBoy

https://datazap.me/u/mfknbimmerboy/l...og=0&data=3-19
https://datazap.me/u/mfknbimmerboy/l...og=0&data=3-19

Got a chance to do 2 logs before I put the car away for the winter.

Stage 2+ 93 octane v7.1

Just upgraded Lpfp because lp sensor was dropping below 50 (barely)

Looking to flash to ethanol maps e40/e60 in the spring. Look alright to do?

pressure looks good to me now. Trims look rich... not sure if thats too rich or what to do about that but if anyone sees anything or has any input please let me know!

Mods:
70k miles, walnut blast at 60k. Bms dci, 5 in vrsf intercooler, stock inlets, stock turbos, one step colder plugs, new delphi coils, vrsf downpipes, bmw performance exhaust, bms chargepipe, tial bov, bov adapter, bmp bucketed stage 2 fuel pump, billet pcv, x2 oil catch can, cowl filters, bms clutch valve, bms clutch stop

1st log is not so useful because you roll on the accelerator too slowly and actually never achieve full open.

2nd is better from a technical standpoint but try to apply full throttle in third at 2500, hold it to 6K, shift to 4th and hold that as long as you can. Also, it's very useful to monitor throttle opening (not just accelerator position) and at least mention what gear you were in. In your case I'd add the long term trims to the monitor list.

What's good is you are meeting boost request (although boost mean is a better indicator than boost psi) and your fuel pressures, IAT and AFRs look fine.

What's not good is your short term trims almost max out negative (max is 33%). The DME is pulling fuel relative to what your tune is calling for - so your call of rich is correct. Even though there's no indication from the AFRs of a problem, at about the point where the short term trims start to really dive, you develop corrections in all 6 cylinders. The corrections are relatively minor (-3 to -4 degrees) but having them in all cylinders all at the same time is not good.

I would not be adding ethanol until I understood why the trims were excessive and timing was being consistently pulled. Don't know if this is a tune issue or a mechanical problem. maybe others will have a better informed judgement there.

[MfknBimmerBoy]

Originally Posted by dpaul

1st log is not so useful because you roll on the accelerator too slowly and actually never achieve full open.

2nd is better from a technical standpoint but try to apply full throttle in third at 2500, hold it to 6K, shift to 4th and hold that as long as you can. Also, it's very useful to monitor throttle opening (not just accelerator position) and at least mention what gear you were in. In your case I'd add the long term trims to the monitor list.

What's good is you are meeting boost request (although boost mean is a better indicator than boost psi) and your fuel pressures, IAT and AFRs look fine.

What's not good is your short term trims almost max out negative (max is 33%). The DME is pulling fuel relative to what your tune is calling for - so your call of rich is correct. Even though there's no indication from the AFRs of a problem, at about the point where the short term trims start to really dive, you develop corrections in all 6 cylinders. The corrections are relatively minor (-3 to -4 degrees) but having them in all cylinders all at the same time is not good.

I would not be adding ethanol until I understood why the trims were excessive and timing was being consistently pulled. Don't know if this is a tune issue or a mechanical problem. maybe others will have a better informed judgement there.

Roger that. I appreciate your feedback and will continue to watch this. Maybe someone else will have some more good insight!

I feel like its gonna be injectors >.<

[BM3Rrrr]

Originally Posted by MfknBimmerBoy

Roger that. I appreciate your feedback and will continue to watch this. Maybe someone else will have some more good insight!

I feel like its gonna be injectors >.<

Could be injectors but i would replace the o2 sensors first as they are cheaper unless you have already replaced them

[thormessiah]

Hello all,
I'm getting a cylinder 3 misfire on the updated versions of my customs tune. Both stage 2 E30 and the base custom tune run fine. The car just got new step 2 colder plugs tapped at 0.022 and eldor coils, so I think it files those out.

Customs tune base map: https://datazap.me/u/volfwaley/wedge...og=0&data=3-20

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

[Saif2018]

Originally Posted by thormessiah

Hello all,
I'm getting a cylinder 3 misfire on the updated versions of my customs tune. Both stage 2 E30 and the base custom tune run fine. The car just got new step 2 colder plugs tapped at 0.022 and eldor coils, so I think it files those out.

Customs tune base map: https://datazap.me/u/volfwaley/wedge...og=0&data=3-20

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

Probably tune related,

That misfire log taking its sweet time to reach boost targets too.

Have you spoken to your tuner?

Also what codes are you getting?

[thormessiah]

Originally Posted by Saif2018

Probably tune related,

That misfire log taking its sweet time to reach boost targets too.

Have you spoken to your tuner?

Also what codes are you getting?

The only code is ‘Misfire on cylinder 3’ & nothing else. Yeah I noticed boost is lagging behind target up top, hopefully a minor boost leak.
I have, still waiting on him to get back to me 🙃

[Saif2018]

Originally Posted by thormessiah

The only code is ‘Misfire on cylinder 3’ & nothing else. Yeah I noticed boost is lagging behind target up top, hopefully a minor boost leak.
I have, still waiting on him to get back to me 🙃

I don't know if it's a boost leak though, I mean the base map looked fine. Both the boost issue & misfire can be map related.

Who's your tuner if you don't mind me asking?

[thormessiah]

Originally Posted by Saif2018

I don't know if it's a boost leak though, I mean the base map looked fine. Both the boost issue & misfire can be map related.

Who's your tuner if you don't mind me asking?

It's Ken at WedgePerformance

[Saif2018]

Originally Posted by thormessiah

It's Ken at WedgePerformance

[E92xiSS]

Originally Posted by E92xiSS

Can you guys please look at my log.

My car is running 93 octane but was getting a lot of timing correction on the 93 map so I flashed it to 91 flex fuel map.

Current mods are all stage 2+ items. (dp,ic,cp,inlets,stage 2 fp) with fresh new plugs and coils
thank you

Pump 93 - https://datazap.me/u/e92xiss/log-160...og=0&data=3-23

E50 Mix - https://datazap.me/u/e92xiss/log-160...og=0&data=3-22

Can someone please look at my log regarding my fuel pressure? LPFP is constantly going up and down from high 90s to low 50s. is this safe? LPFP is brand new stage 2 from precision raceworks.

thank you

[Saif2018]

Originally Posted by E92xiSS

Can someone please look at my log regarding my fuel pressure? LPFP is constantly going up and down from high 90s to low 50s. is this safe? LPFP is brand new stage 2 from precision raceworks.

thank you

LPFP fuel pressure below 50 is not good, at some points in your log it's even gone below 50,

I'm on stock LPFP so I'm not sure what could be causing this,

Could be the EKP module from what I read, some of the guys running stage 2 pumps maybe able to help,

[thormessiah]

Originally Posted by Saif2018

So he sent a new revision for the tune which I flashed and ran immediately...Still a misfire on cylinder 3. I'm honestly stumped at this point, but I can definitely rule out coils, and spark plugs which are the most common culprits. Also Injectors are Index 12 installed earlier this year. My tuner continues to say its ignition related, maybe vanos solenoids? I dont think I've ever changed them out.

[Saif2018]

Originally Posted by thormessiah

So he sent a new revision for the tune which I flashed and ran immediately...Still a misfire on cylinder 3. I'm honestly stumped at this point, but I can definitely rule out coils, and spark plugs which are the most common culprits. Also Injectors are Index 12 installed earlier this year. My tuner continues to say its ignition related, maybe vanos solenoids? I dont think I've ever changed them out.

If you go back to the base map, does it misfire still?

Have you tried swapping plugs and coils from cylinder 3?

You could also swap injectors from cylinder 3 to another cylinder, (after you've swapped coils and plugs)

That way you will be able to rule all 3 out for sure.

[thormessiah]

Originally Posted by Saif2018

If you go back to the base map, does it misfire still?

Have you tried swapping plugs and coils from cylinder 3?

You could also swap injectors from cylinder 3 to another cylinder, (after you've swapped coils and plugs)

That way you will be able to rule all 3 out for sure.

Base map still runs fine. I have swapped coils and plugs, but I haven't tried the injectors on cylinder 3. I guess I can find those a shot

[Saif2018]

Originally Posted by thormessiah

Base map still runs fine. I have swapped coils and plugs, but I haven't tried the injectors on cylinder 3. I guess I can find those a shot

Eldor Coils are pretty reliable although they can fail, If the Injectors check out, then go back to the tuner and ask him what else it could be, he should be able to point you in the right direction.

[_N54]

Finally got around to installing my meth kit and did a quick log yesterday. What's interesting is this tune I'm running use to hit 21 psi peak and hold 20 psi to redline, but since installing meth the boost has decreased. Currently waiting for my tuner to make adjustments, but this was logged with a 80/20 mix and a E50 blend:

https://datazap.me/u/n54tt/n54-v8bai...17-21-22-26-30

[Chicago_N55]

Hey guys, would someone mind taking a look at this log for me and let me know what you think? I'm very new at reading logs so please forgive my ignorance. 2011 335i xdrive, MHD stg 1, bms intake and vrsf charge pipe. No active codes. I'm seeing a boost spike and significant timing corrections right after I shift into 4th, particularly in cylinder 5. That said, plugs and coils are about due for a change, so could be that..
Any help is appreciated and if you see anything else drastically wrong that I'm not seeing, please let me know. Thank you in advance!

https://datazap.me/u/araden42/log-16...87-h0PJx9d3dXM

[Saif2018]

Originally Posted by Chicago_N55

Hey guys, would someone mind taking a look at this log for me and let me know what you think? I'm very new at reading logs so please forgive my ignorance. 2011 335i xdrive, MHD stg 1, bms intake and vrsf charge pipe. No active codes. I'm seeing a boost spike and significant timing corrections right after I shift into 4th, particularly in cylinder 5. That said, plugs and coils are about due for a change, so could be that..
Any help is appreciated and if you see anything else drastically wrong that I'm not seeing, please let me know. Thank you in advance!

https://datazap.me/u/araden42/log-16...87-h0PJx9d3dXM

Timing corrections could be your plugs and coils, would suggest that you do them anyway. Re log after you have done them. (3rd gear WOT till over 6k and let transmission shift into 4th then back off after a few secs.)

Also looks like you possibly have a small boost leak somewhere, as turbos struggling to hit targets, mostly on about 10-11psi

I'm on a RWD 335i and get 13-14 psi on a Stage 1 93oct map.

Would suggest you follow this guide to rule out boost leak...

https://bmwtuning.co/bmw-n54-30ff-en...-repair-guide/

[thormessiah]

Originally Posted by Saif2018

Eldor Coils are pretty reliable although they can fail, If the Injectors check out, then go back to the tuner and ask him what else it could be, he should be able to point you in the right direction.

Checked the injector on cylinder 3 and it looked like it was clogged up a bit. Really weird since it was index 12 and had only been on about 9 months. I cleaned it up, replaced the seals and swapped it with cylinder 1 and the misfire is finally gone. I’ll get some logs this weekend when the weather gets warmer

[Saif2018]

Originally Posted by thormessiah

Checked the injector on cylinder 3 and it looked like it was clogged up a bit. Really weird since it was index 12 and had only been on about 9 months. I cleaned it up, replaced the seals and swapped it with cylinder 1 and the misfire is finally gone. I’ll get some logs this weekend when the weather gets warmer

That's great glad to hear its fixed.