[gster109]

Originally Posted by Dave92N54

Honestly this is an odd log, if you're 6mt do you double clutch? There is really long periods of "gear 0" lol
You also really should be doing this in 3rd.

Looking at what we have, boost looks pretty good, it's not right on target but it's close. AFRs look pretty normal as well. Fuel pressure is good, short term trims look good too. Try logging LTFT next time, should peg at 0 during the pull.

You have some pretty bad timing corrections once you get into 5th though, literally every cylinder and and they're all -3 or greater, cyl6 hit -6. If I had to guess, they're gonna be plug, octane, or IAT related. I wanna lean towards octane bc you're only on 91, though IAT at like 110F is getting close to very hot.

Another thing I noticed is it seems a little slow? I'm on 1+ and 5200 rpm in 4th i'm easily doing over 110mph (though I'm 99% sure top of 3rd is like 95 for me), you're doing ~100 at the top of 4th.

Did you possibly upload the wrong log? I see you titled it 3rd-4th but according to the log this is definitely 4th-5th.

Thanks for your input, I am 6mt & I don't double clutch but this was when i was basically coasting after winding out 4th which you can see at the beginning of the log. I have auto logger on so I guess when I was winding out 3rd I wasn't full throttle.

I'm quite concerned with the timing pulls, do you think it could be injectors not up to spec? My intakes are quite dirty I've been meaning to clean them.

I believe it's bad gas too because I usually fill up around the half way mark to not stress out the HPFP too much. Ill get it down to a quarter & fill fresh gas to do a proper log hopefully I wont have these aggressive timing corrections.

Would higher octane gas help with the timing?

[Dave92N54]

Originally Posted by gster109

Thanks for your input, I am 6mt & I don't double clutch but this was when i was basically coasting after winding out 4th which you can see at the beginning of the log. I have auto logger on so I guess when I was winding out 3rd I wasn't full throttle.

I'm quite concerned with the timing pulls, do you think it could be injectors not up to spec? My intakes are quite dirty I've been meaning to clean them.

I believe it's bad gas too because I usually fill up around the half way mark to not stress out the HPFP too much. Ill get it down to a quarter & fill fresh gas to do a proper log hopefully I wont have these aggressive timing corrections.

Would higher octane gas help with the timing?

They likely are, try some better gas or give a booster a try

[N54andrew]

I'm fbo stage 2 e40 v5 mhd ots 2008 e93, this is 2nd gear to 3rd gear manual tranny

https://datazap.me/u/n54andrew/log-1...og=0&data=3-21

[Saif2018]

Originally Posted by N54andrew

I'm fbo stage 2 e40 v5 mhd ots 2008 e93, this is 2nd gear to 3rd gear manual tranny

Post a Datazap.me link mate, screenshot won't do.

[Dave92N54]

Originally Posted by N54andrew

I'm fbo stage 2 e40 v5 mhd ots 2008 e93, this is 2nd gear to 3rd gear manual tranny

Jesus did you screenshot this with a polaroid?

[Saif2018]

In the process of dialing in a Custom map with JSR tuning,

Can you guys have a look at the v2 log below and let me know how it looks? car seems to be pulling very hard when on boost,

https://datazap.me/u/shelim2020/jsr-...og=0&data=3-23

Thanks,

[N54andrew]

Originally Posted by Saif2018

Post a Datazap.me link mate, screenshot won't do.

whoops sorry https://datazap.me/u/n54andrew/log-1...&data=3-21

[Saif2018]

Originally Posted by N54andrew

whoops sorry https://datazap.me/u/n54andrew/log-1...og=0&data=3-21

That's not a good log mate.

Make sure DSC is fully off, then bring the car up 2500 rpm in 3rd gear, go wide open throttle and keep it pinned until just over 6k, shift into 4th then back off after a few secs.

Make sure you do this in a safe place/time

[N54andrew]

Originally Posted by Saif2018

That's not a good log mate.

Make sure DSC is fully off, then bring the car up 2500 rpm in 3rd gear, go wide open throttle and keep it pinned until just over 6k, shift into 4th then back off after a few secs.

Make sure you do this in a safe place/time

here we go and dsc was completely off https://datazap.me/u/n54andrew/3rd-g...;data=2-3-5-21

[Dave92N54]

Originally Posted by N54andrew

here we go and dsc was completely off https://datazap.me/u/n54andrew/3rd-g...;data=2-3-5-21

Either turbos are tired or there is a boost leak. You're off target a good bit. Also IATs are very very high. What intercooler are you running?

[Saif2018]

Originally Posted by N54andrew

here we go and dsc was completely off https://datazap.me/u/n54andrew/3rd-g...&data=2-3-5-21

Looks like a pretty bad boost leak, way off boost targets and taking a long time to get anywhere near it, WGDC is also consistently high

Follow this guide, even if you don't have a 30FF code,

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

[ab987]

Hey all, back again. Did a 100-200 the other day that felt really slow (10.5 seconds or so), took some logs that night, and consistently I am getting timing pulls every pull. At first I thought it might be a boost leak making it slow but it turns out i was hearing my rear inlet popping off. WGDC seems a tad high so maybe I have a slight one? I tested my DVs and looked around with the ol soap bottle and nothing obvious. Tried to take off outlets to test the rubber joint but I installed a vband towards my mount bracket so I'm gonna have to get creative if I want to take those off. I hope it's bad gas.

Log: https://datazap.me/u/ab987/3-fbo-5500?log=0&data=3-20

Car has 91k, did clutch 2 weeks ago, plugs 8k ago, turbos 7k ago, injectors all index 12 13k ago, car has CSF intercooler, DCI, and catless downpipes on MHD Stage 2+ 93oct. Stage 2 LPFP and 1.75 inch inlets go in next month (please god stop popping off). Coils have 45k on them but surely they wouldn't cause knocking right? No misfires and it's always all 6 that pull mild timing (3-4 deg). What gives? This is not the first time, I seem to get these kinds of pills fairly often no matter the gas unless it's super cold out. Appreciate it.

[Saif2018]

Originally Posted by ab987

Hey all, back again. Did a 100-200 the other day that felt really slow (10.5 seconds or so), took some logs that night, and consistently I am getting timing pulls every pull. At first I thought it might be a boost leak making it slow but it turns out i was hearing my rear inlet popping off. WGDC seems a tad high so maybe I have a slight one? I tested my DVs and looked around with the ol soap bottle and nothing obvious. Tried to take off outlets to test the rubber joint but I installed a vband towards my mount bracket so I'm gonna have to get creative if I want to take those off. I hope it's bad gas.

Log: https://datazap.me/u/ab987/3-fbo-5500?log=0&data=3-20

Car has 91k, did clutch 2 weeks ago, plugs 8k ago, turbos 7k ago, injectors all index 12 13k ago, car has CSF intercooler, DCI, and catless downpipes on MHD Stage 2+ 93oct. Stage 2 LPFP and 1.75 inch inlets go in next month (please god stop popping off). Coils have 45k on them but surely they wouldn't cause knocking right? No misfires and it's always all 6 that pull mild timing (3-4 deg). What gives? This is not the first time, I seem to get these kinds of pills fairly often no matter the gas unless it's super cold out. Appreciate it.

Couple of things, 10.5 sec 100-200 isn't slow for your car, yes probably a bit slow for Stage 2+

Timing corrections could be caused by a number of things, such as plugs, coils, injectors or bad fuel. 93oct fuel should be fine.

Which coils are you using?

45k on coils is could be causing them, would be a good idea to replace them with Eldor or Delphi ones.

Can you do another log with LTFT checked as well, can only see STFT?

WGDC seems normal considering it's targeting 18psi up top, stock turbos will struggle to hit that target and WGDC will rise a little in return.

Don't go WOT from low rpm, that's asking for trouble on boosted engine, even more so on a tuned one. At least 2.5k before going WOT.

[N54andrew]

Originally Posted by Dave92N54

Either turbos are tired or there is a boost leak. You're off target a good bit. Also IATs are very very high. What intercooler are you running?

I am running vrsf 7 inch that day it was 1pm like 110 f outside, that was after a couple pulls and my turbos have bad wastegate rattle and smoke at lights :/ I think they're done, good thing I have some daw high-flows here already, should I still check for Boost leaks anyways?

[N54andrew]

Originally Posted by Saif2018

Looks like a pretty bad boost leak, way off boost targets and taking a long time to get anywhere near it, WGDC is also consistently high

Follow this guide, even if you don't have a 30FF code,

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

Thank you so much! I think the turbos are just done, I have bad waste gate rattle and they smoke at red lights, good thing I have some DAW high flows ready to go!! I really appreciate you looking it over! some times I notice I'll hit 20 psi and sometimes I won't **

[Saif2018]

Originally Posted by N54andrew

I am running vrsf 7 inch that day it was 1pm like 110 f outside, that was after a couple pulls and my turbos have bad wastegate rattle and smoke at lights :/ I think they're done, good thing I have some daw high-flows here already, should I still check for Boost leaks anyways?

IAT's should be fine if ambient temps were that high.

No harm checking for boost leaks but if your planning on installing the turbo's, might as well do that first and check everything over.

You'll likely need LPFP stage 2 to go with the High flow turbos.

[Saif2018]

Originally Posted by N54andrew

Thank you so much! I think the turbos are just done, I have bad waste gate rattle and they smoke at red lights, good thing I have some DAW high flows ready to go!! I really appreciate you looking it over! some times I notice I'll hit 20 psi and sometimes I won't **

Yeah does sound like the stockers are done.

It's probably your wastegates and turbo seals,

[N54andrew]

Originally Posted by Saif2018

IAT's should be fine if ambient temps were that high.

No harm checking for boost leaks but if your planning on installing the turbo's, might as well do that first and check everything over.

You'll likely need LPFP stage 2 to go with the High flow turbos.

yes I have a lpfp 450 walbro installed ! and okay will do a smoke leak test just to make sure ! raced a 2020 camaro ss bolt on the other night and beat him by a car so these turbos ain't too bad I guess lol, the weird part is sometimes I'll ht 20 psi ?? sometimes I'll his 19.2 n sometimes only 16??

[N54andrew]

Originally Posted by Saif2018

Yeah does sound like the stockers are done.

It's probably your wastegates and turbo seals,

the weird thing is I'll hit 20 psi 18 at times just all depends?? I'm guessing wastegates ?? not sealing properly?? I raced a 2020 camaro ss from a 40 yesterday and beat him by a car hit 19.5 psi

[Saif2018]

Originally Posted by N54andrew

yes I have a lpfp 450 walbro installed ! and okay will do a smoke leak test just to make sure ! raced a 2020 camaro ss bolt on the other night and beat him by a car so these turbos ain't too bad I guess lol, the weird part is sometimes I'll ht 20 psi ?? sometimes I'll his 19.2 n sometimes only 16??

Dodgy wastegates or boost solenoids ?

[Kalbs59]

how does my log look I did 9 gallons of e85 and the rest of the tank was 93 do I need more or less E85
the tune is V5 stage 2+ E40

https://datazap.me/u/kalbs59/log-162...og=0&data=3-23

[ab987]

Originally Posted by Saif2018

Couple of things, 10.5 sec 100-200 isn't slow for your car, yes probably a bit slow for Stage 2+

Timing corrections could be caused by a number of things, such as plugs, coils, injectors or bad fuel. 93oct fuel should be fine.

Which coils are you using?

45k on coils is could be causing them, would be a good idea to replace them with Eldor or Delphi ones.

Can you do another log with LTFT checked as well, can only see STFT?

WGDC seems normal considering it's targeting 18psi up top, stock turbos will struggle to hit that target and WGDC will rise a little in return.

Don't go WOT from low rpm, that's asking for trouble on boosted engine, even more so on a tuned one. At least 2.5k before going WOT.

Yeah that's what I mean, 10.5 is not slow but even for an e93 it definitely feels a lot slower than usual. It falls on its face completely past 5k, at 90 mph it was pulling harder in 6th than 3rd. I know stock turbos get restrictive up top but at 5k? That seems where peak power usually is for our tuned cars. The coils are Delphi Genuine? I'm out of town for about 2 weeks so I'll take more logs with LTFTs when I get back, I didn't realize those weren't on by default. If it was injectors wouldn't it more likely be isolated to a cylinder, if not a bank if it's messing with fuel trims? It being all 6 makes me think it might be bad gas, but I usually don't have a problem with Chevron. Plugs don't need to be gapped for 93 stage 2+ right? I will probably go with colder ones when I get my LPFP so I can run e50 anyways. Thanks, I'll follow up with those logs