[Saif2018]

Originally Posted by whyzee125

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.

V Power 98ron/93 Oct pump gas, its the best we have in uk, but using Octane booster does reduce corrections so I'm guessing the quality ain't that good.

[Saif2018]

Originally Posted by vadonchez

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....

If MHD say its fine, then I wouldn't worry about it. Good idea to do the coils and plugs though.

[blbrchnk]

Hey everyone, been a while since I have posted here. A little backstory, I have had this N54 for about 6 years and have put only 5k miles on it in that time. At a certain point I wasn’t driving it much and I think the gas turned on me. Today I am looking to sell the vehicle but when I go WOT bank 1 afr spikes/jumps around. The car runs flawlessly under normal driving conditions. My initial thoughts were maybe gummed up fuel injectors. I do get a cylinder 2 misfire when it goes to limp mode. Car has upgraded RB turbos, FMIC, downpipe, bq tune that used to run well, etc. I have a few groups of logs I will post below, if anyone has any ideas it would be greatly appreciated. Thanks.

https://datazap.me/u/blbrchnk/log-16...&data=16-17-23

https://datazap.me/u/blbrchnk/log-16...g=1&data=16-23

[Saif2018]

Originally Posted by blbrchnk

Hey everyone, been a while since I have posted here. A little backstory, I have had this N54 for about 6 years and have put only 5k miles on it in that time. At a certain point I wasn’t driving it much and I think the gas turned on me. Today I am looking to sell the vehicle but when I go WOT bank 1 afr spikes/jumps around. The car runs flawlessly under normal driving conditions. My initial thoughts were maybe gummed up fuel injectors. I do get a cylinder 2 misfire when it goes to limp mode. Car has upgraded RB turbos, FMIC, downpipe, bq tune that used to run well, etc. I have a few groups of logs I will post below, if anyone has any ideas it would be greatly appreciated. Thanks.

https://datazap.me/u/blbrchnk/log-16...&data=16-17-23

https://datazap.me/u/blbrchnk/log-16...g=1&data=16-23

If you have a misfire, you need to sort that out first.

[blbrchnk]

Originally Posted by Saif2018

If you have a misfire, you need to sort that out first.

Working on it as we speak. Have new plugs otw and switched coil packs and just about to go out for a drive. My worry is that it is the injectors though and didn’t know if that could be seen from anything in the logs. Thanks!

[Saif2018]

Originally Posted by blbrchnk

Working on it as we speak. Have new plugs otw and switched coil packs and just about to go out for a drive. My worry is that it is the injectors though and didn’t know if that could be seen from anything in the logs. Thanks!

Difficult to tell with a misfire. Check for wet plugs and inspect Injectors to see if tips clogged.

[Chrium]

hello,please take a look at my logs, my stft are shooting to 30% at low rpm 1500-2000 rpm then they come back to normal and have some timing correction also my afr is weird lazy when i let off throttle in bank 2 and bank 1 is running 13,xx when cruising .what to look for thank you?
https://datazap.me/u/lastchrium/mhd-...-6-7-8-9-10-20
car fbo stock turbo stock inlets stock outlets, 2step colder ngk
index 12

[blbrchnk]

Originally Posted by Saif2018

Difficult to tell with a misfire. Check for wet plugs and inspect Injectors to see if tips clogged.

I thought removing injectors without replacing Teflon seals was a no no? Was the only reason I didn’t take em out and spray em off.

[Saif2018]

Originally Posted by blbrchnk

I thought removing injectors without replacing Teflon seals was a no no? Was the only reason I didn’t take em out and spray em off.

I wasn't saying you should pull injectors without replacing seals, always recommend to replace them, plus they are very cheap.

[dreyo27]

Need Help. I have massive timing pulls on cyl 5 only. I am talking 9+ degrees. I already replaced and regaped the plugs, replaced injectors 2 times on that cyl5 with new seals. It was a tight fit. Swapped around my PR coils and boots. I did a compression test and it was inline with other cylinders. I even borescoped it. The car does have MMP1K turbos and VTT shotgun kit as well as Xclutch twin disc clutch.
Seems like it happens at higher RPM and boost levels like here.
https://datazap.me/u/dreyo27/injecto...=1&data=3-9-21
https://datazap.me/u/dreyo27/cold-run?log=0&data=3-9-21

Not at lower boost levels like here.
https://datazap.me/u/dreyo27/bq91-hi...=0&data=3-9-24

[TSilver335i]

Originally Posted by dreyo27

Need Help. I have massive timing pulls on cyl 5 only. I am talking 9+ degrees. I already replaced and regaped the plugs, replaced injectors 2 times on that cyl5 with new seals. It was a tight fit. Swapped around my PR coils and boots. I did a compression test and it was inline with other cylinders. I even borescoped it. The car does have MMP1K turbos and VTT shotgun kit as well as Xclutch twin disc clutch.
Seems like it happens at higher RPM and boost levels like here.
https://datazap.me/u/dreyo27/injecto...=1&data=3-9-21
https://datazap.me/u/dreyo27/cold-run?log=0&data=3-9-21

Not at lower boost levels like here.
https://datazap.me/u/dreyo27/bq91-hi...=0&data=3-9-24

Looks like it leaning out in that area up top 13AFR's. HPFP is dipping bordering lining on 1500psi.

Compare it to your log where there was no correction.

[damso89]

Hello Guys,

I have a 335i e92 MT with all the parts belows:
-stage 1 turbo from turbomarkt (upgraded wheel)
-silicon inlets 2.0
- downpipes
- Wagner FMIC evo 1

- Spark plugs 1 step colder not gaped
- Coils new

I am currently running a mhd stage 2 + map V10

what do you guys think of my log ?

https://datazap.me/u/damien89/log-16...10-11-12-13-22

[Saif2018]

Originally Posted by damso89

Hello Guys,

I have a 335i e92 MT with all the parts belows:
-stage 1 turbo from turbomarkt (upgraded wheel)
-silicon inlets 2.0
- downpipes
- Wagner FMIC evo 1

- Spark plugs 1 step colder not gaped
- Coils new

I am currently running a mhd stage 2 + map V10

what do you guys think of my log ?

https://datazap.me/u/damien89/log-16...10-11-12-13-22

One step colder plugs should be gapped. Looks good apart from the throttle closures, but V10 is known for that. I have the same FMIC, but since your pushing higher boost up top, IAT's climbing quickly, FMIC is probably at its limit, upgrade highly recommended.

[damso89]

Thanks a lot for your answer Saif2018 !!

Wich gape would be convenient ? 0.022?

what do you think of the timing correction at the end ?

[Saif2018]

Originally Posted by damso89

Thanks a lot for your answer Saif2018 !!

Wich gape would be convenient ? 0.022?

what do you think of the timing correction at the end ?

Yeah, 0.022 is the suggested gap, if I recall correctly. Your corrections although not major are accross multiple cylinders, probably due to your FMIC and/or Fuel quality.

[damso89]

That is what I was thinking about. maybe the small IC will create timing correction at the end of the wot...

[Chrium]

Hello, please can someone take a look at my logs i already posted several times but now the issue seems more prononced,
i'm getting misfire cylindre 1, cylindre 3 and superknock cylindre 6 with high stft bank 1 , the car also is throwing 2c7a o2 after catalytic swapped , 2c7b 02 signal bank 1 , 2c7e o2 sensor control.
the misfires and superknock only happen at high RPM and Only at high speed 5 or 6 gear near 140 mph.
the car is a 335i DCT, FBO stage 2+ 91 octane, 2 step colder and Walbro 450.
please find attached logs of pulls where at the end things happen( i thing exactly at 6126 rpm)
https://datazap.me/u/lastchrium/misf...-21-23&mark=55

[ckmeter]

I've been struggling to resolve my boost target not met issues. So far, I've done:
New boost solenoids
All new vacuum lines
New charge pipe

I'm hitting target and log looks good on stage 0, but I'm getting a 30ff and not hitting target on stage 1. I'm wondering if it could be a tmap or diverter valve issue? Thoughts?

https://datazap.me/u/ckmeter/target-...=0&data=3-5-19

[Saif2018]

Originally Posted by ckmeter

I've been struggling to resolve my boost target not met issues. So far, I've done:
New boost solenoids
All new vacuum lines
New charge pipe

I'm hitting target and log looks good on stage 0, but I'm getting a 30ff and not hitting target on stage 1. I'm wondering if it could be a tmap or diverter valve issue? Thoughts?

https://datazap.me/u/ckmeter/target-...=0&data=3-5-19

Could be your Wastegates, have you tried tightening the wastegate rods to see if it makes a difference?

Have a read through this guide...

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

From your log, it looks like really laggy, taking about 1000rpm to reach target and even when it gets close to BT it drops and fluctuates.

I'm assuming you checked IC connections, charge pipe and vac lines as well as vacuum cannisters and connection points.

Smoke test would be a good idea,

Worst case your Wastegates/Turbos are shot.

[ckmeter]

I haven't tightened the wastegates. The previous owner said he had new turbos installed...I don't know if I believe him. I will say, the wastegates and turbos look pretty new cosmetically.

I checked the IC connections, and the o-rings were there with no damage. I can replace the o-rings preventatively though. I also just installed a new aftermarket charge pipe.

I'm getting 26in hg vacuum to the inlet of the boost solenoids. At idle, I'm getting roughly 16 in hg vacuum on the outlet. I don't think I have a vacuum issue.

The only thing I haven't touched are the original diverter valves. At idle, I'm getting roughyl 17 in hg from the intake manifold to the diverters. I'm wondering if those could cause this issue? I don't know if they fail often.

I can plan on smoke testing my car. Otherwise...big turbo time I guess...

[Saif2018]

Originally Posted by ckmeter

I haven't tightened the wastegates. The previous owner said he had new turbos installed...I don't know if I believe him. I will say, the wastegates and turbos look pretty new cosmetically.

I checked the IC connections, and the o-rings were there with no damage. I can replace the o-rings preventatively though. I also just installed a new aftermarket charge pipe.

I'm getting 26in hg vacuum to the inlet of the boost solenoids. At idle, I'm getting roughly 16 in hg vacuum on the outlet. I don't think I have a vacuum issue.

The only thing I haven't touched are the original diverter valves. At idle, I'm getting roughyl 17 in hg from the intake manifold to the diverters. I'm wondering if those could cause this issue? I don't know if they fail often.

I can plan on smoke testing my car. Otherwise...big turbo time I guess...

I'm not sure if the DV would cause the problem, at stage 1 they should easily handle the boost pressure, I had my stock ones boost to 20psi and they still didn't fail. If you had a spare set could have ruled them out, otherwise I'm getting Forge DV soon hopefully, might be a good idea, it's not expensive.

Have you got any WG rattle?

I'd do a smoke test just to help rule out any possible boost leak.

Also have you tried v7/v9 maps to see if it makes any difference?

[Spoolsport]

Hi guys!

I've just installed brand new 17ts, Large moshimito intercooler, upgraded inlets.

Having an issue with high intake temps!? Even after the upgraded intercooler. Is there a reason for this? Also my car is still running pig rich

My car drives fine for the first 20 minutes then my turbos start to lag massively

https://datazap.me/u/boosty/high-int...og=0&data=3-22

This is just a quick log. I'll do a proper log when I get the chance.

You can see my high intake temps and high wgdc?

Any help would be appreciated