[Sgop335]

Originally Posted by Linx

So is that saying I need a custom tune and this is not a hardware issue?

Need better octane.

[Linx]

Originally Posted by Sgop335

Need better octane.

All we get in Cali is 91. Other than that going E85 but those are far and few

[Sgop335]

Originally Posted by Linx

All we get in Cali is 91. Other than that going E85 but those are far and few

Yes e85. W a calculator one can figure how much to mix to get at least 93 or pref 95. Makes a big diff.

[Linx]

Originally Posted by Sgop335

Yes e85. W a calculator one can figure how much to mix to get at least 93 or pref 95. Makes a big diff.

Where's a good place to start to get educated on E85?
And is this my only option for now? Will a custom tune fix it?

[ansch]

Please review my log
https://datazap.me/u/ansch/daily-3rd...&zoom=872-1024

There are timing drops at the beginning of the pull on cyl 2 & 4, 3 & 6 timing drop at higher rpm and cyl 5 in the middle.. Don't know what to make of it.

Running MHD 7.1 stage 1+

[Jerain]

Updated latest MHD flasher 1.72b and reflashed a full write with V8 stage 2+ 102RON. Now had two times the 30FF code, never had it before with 98RON or V7 maps... What could be wrong?
Again today on higher rpm, full boost and sudden 30FF, Reset it and everything back ok, full boost pressure in midrange. Reflashed to stage 2+ V7.1 98RON and no problems at all, full power and boost until redline...

Is it possible to be a boost solenoid problem not being able to hold the higer boost target in high RPM with the 102RON map (17-18psi) and with a V7 98 Ron map only targetting 14-15 psi?

Datzap log from the 30FF run:

https://datazap.me/u/jerain/stage-2-...14-15-22-26-29

MHD Tuning

[Bimmer_Engineer]

Originally Posted by Jerain

Updated latest MHD flasher 1.72b and reflashed a full write with V8 stage 2+ 102RON. Now had two times the 30FF code, never had it before with 98RON or V7 maps... What could be wrong?
Again today on higher rpm, full boost and sudden 30FF, Reset it and everything back ok, full boost pressure in midrange. Reflashed to stage 2+ V7.1 98RON and no problems at all, full power and boost until redline...

Is it possible to be a boost solenoid problem not being able to hold the higer boost target in high RPM with the 102RON map (17-18psi) and with a V7 98 Ron map only targetting 14-15 psi?

Datzap log from the 30FF run:

https://datazap.me/u/jerain/stage-2-...14-15-22-26-29

MHD Tuning

I had a very similar response in WGDC followed by a drop in boost like you're seeing around 4600 rpm. I replaced the vacuum lines, checked the charge pipe, and changed the IC o-rings. Boost solenoids finally fixed it for me...

[Bimmer_Engineer]

Originally Posted by ansch

Please review my log
https://datazap.me/u/ansch/daily-3rd...&zoom=872-1024

There are timing drops at the beginning of the pull on cyl 2 & 4, 3 & 6 timing drop at higher rpm and cyl 5 in the middle.. Don't know what to make of it.

Running MHD 7.1 stage 1+

Did you mark the log "public"? I can't see it...

[Jerain]

Originally Posted by Bimmer_Engineer

I had a very similar response in WGDC followed by a drop in boost like you're seeing around 4600 rpm. I replaced the vacuum lines, checked the charge pipe, and changed the IC o-rings. Boost solenoids finally fixed it for me...

Thanks for your answer. I've checked most lines and intake parts so just ordered 2 new boost solenoids. Running 3 times the boost from stock last months and the car now has 170000 kms, so probably the first they they will be changed. Turbos have been changed around 110000 km and no waste gate ratlle etc...

[Betmenas]

Hi, could anyone have a look at my log? I ran it on MHD V8 E30 Stage 2+ map. Is my car up to it? I have stock LPFP with no upgrades so I am not sure whether the fuel supply is good enough. Also from my little understanding it seems that something may not be right with boost as it is always under target. There may be other issues, though, that more experienced of you will be able to identify.

https://datazap.me/u/taduxiss/log-15...og=0&data=3-22

[ansch]

Originally Posted by Bimmer_Engineer

Did you mark the log "public"? I can't see it...

I have made it public now.. thank you

[ansch]

Been reading up and wanting to start playing with the e85 mix maps, I filled up this evening with some e85 to a target mix of E20 and flashed the Stage 1+ 95oct map.

https://datazap.me/u/ansch/daily-3rd...zoom=1021-1099

The timing corrections look clean and LPFP still has room. The only thing I'm not sure how to read are the stft% figures. Can anyone comment please?

[Sgop335]

Originally Posted by ansch

Been reading up and wanting to start playing with the e85 mix maps, I filled up this evening with some e85 to a target mix of E20 and flashed the Stage 1+ 95oct map.

https://datazap.me/u/ansch/daily-3rd...zoom=1021-1099

The timing corrections look clean and LPFP still has room. The only thing I'm not sure how to read are the stft% figures. Can anyone comment please?

Clean e20 log. There may be a boost leak tho. Stfts are not bad, beyond 4500 there is an increase and could be adjusted with the fuel scalars. Also, afrs a tad rich beyond 5000.

[Edris335i]

Hoping someone can help me with a boost leak. Here's a log I just took after going FBO and flashing stage 2+ acn 91. Any help is appreciated so I can fix this pesky thing. I have a VRSF CP, TiAL BOV with a yellow spring, and all vacuum lines are redone with platinum cured silicone ones.

https://datazap.me/u/edris335i/boost...a=3-5-19-21-26

Edit: Forgot to mention that I have changed the boost solenoids as well.

Update: Tightened my rear actuator rod and still getting the leak.

new log
https://datazap.me/u/edris335i/boost...=0&data=3-5-22

[ISSA335]

All right guys take a look and see what you think, Car has a 120k miles but engine, turbos and basically everything surrounding the engine have 8k miles, MHD stage 1+ on E30, car is bone stock, no performance mods done as of right now, Catless Dps and FMIC will be here next week but the car runs extremely good and pulls very strong. Haven't had codes or problems or anything. Take a look and see what you guys think

3rd gear pull, about 65-70 degrees in 70% humidity
https://datazap.me/u/issa335/log-153...data=3-4-22-27

[ISSA335]

after looking at my timing corrections, I'm having about -3 on all cylinders, car should have the perfect mix of fuel for E30, i didnt test the fuel from the pump but should i add alittle more E85? Car still has stock plugs so that could also be the problem? Will be getting NGK 5992's

[ISSA335]

Originally Posted by Betmenas

Hi, could anyone have a look at my log? I ran it on MHD V8 E30 Stage 2+ map. Is my car up to it? I have stock LPFP with no upgrades so I am not sure whether the fuel supply is good enough. Also from my little understanding it seems that something may not be right with boost as it is always under target. There may be other issues, though, that more experienced of you will be able to identify.

https://datazap.me/u/taduxiss/log-15...og=0&data=3-22

Not sure about the boost being under target, you have some timing corrections at the very top end of your pull and your low pressure fuel dips down to about 58psi at some points, on my car it stays about 65psi, so not sure if thats good or bad, might be starting to be a little much on your LPFP? what all is down to the car performance wise? and what plugs are you running?

[TheMidnightNarwhal]

.

[Betmenas]

Originally Posted by ISSA335

Not sure about the boost being under target, you have some timing corrections at the very top end of your pull and your low pressure fuel dips down to about 58psi at some points, on my car it stays about 65psi, so not sure if thats good or bad, might be starting to be a little much on your LPFP? what all is down to the car performance wise? and what plugs are you running?

I have NGK 95770 (ILZKBR7B8DG) formally 5992 plugs gapped at 0.022". I have not had any misfires with this map. I have read somewhere that as long as LPFP reading does not stay under 50, it should be ok. Others say that the limit is 60.

[ansch]

Please have a look at my log. It's running the MHD E25 map.
https://datazap.me/u/ansch/daily-17?...zoom=2767-2848

It threw a couple of shadow codes: 2FDB and 30ED (super knock on cylinder 1)

Going to start with upgrading the LPFP.

[Betmenas]

Originally Posted by ansch

Please have a look at my log. It's running the MHD E25 map.
https://datazap.me/u/ansch/daily-17?...zoom=2767-2848

It threw a couple of shadow codes: 2FDB and 30ED (super knock on cylinder 1)

Going to start with upgrading the LPFP.

What is the coil and spark plug situation on cylinder 1?

Also, why start with LPFP? Your low pressure fuel pressure does not even drop below 60 psi.

[ansch]

Originally Posted by Betmenas

What is the coil and spark plug situation on cylinder 1?

Also, why start with LPFP? Your low pressure fuel pressure does not even drop below 60 psi.

Coils and plugs are both replaced earlier this year. The LPFP seems ok on this log but I've seen it drop below 55 on other runs.

In this log, there are drops in the HPFP that coincides with the lean conditions. Which led me to think it's not getting enough fuel. Am I on the right track?