[edo]

Went for a spin today. Misfires didn't go away and are in the same cylinders (5, 6).

So it's definitely not spark plugs, not spark plug coils and not injectors. I so hope misfires will go away when I install Rev2.5 next week....

If not, I will burn my car.

[Schnitzel]

Originally Posted by edo

Went for a spin today. Misfires didn't go away and are in the same cylinders (5, 6).

So it's definitely not spark plugs, not spark plug coils and not injectors. I so hope misfires will go away when I install Rev2.5 next week....

If not, I will burn my car.

Any updates?

[edo]

Good news!
I received and installed Rev2.5 (with 9-10 V5 aggressive FBO upgraded turbos maps) a week ago, but it was raining all the time so I couldn't do any WOTs. But it was dry yesterday and I went for a spin. No more misfires and limp modes!!! I did at least eight 3-4th gear WOTs and three 3rd gear WOTs and everything was fine. So it was Rev2 and/or old maps' fault.

However, I have some questions regarding 9-10 maps. It was written in the readme file that autotuning was switched off. So I set start boost to 70% and overboost limit to 18 PSI and did some data logs:



Boost is 17.9-18.4 PSI from 4.1k to ~5.8k rpm, then tapers to ~16 PSI @ 6.3k rpm. And in 4th gear boost is even higher.

So I guess autotune works? After seeing the boost, I set overboost limit to 19 PSI (left start boost set to 70%).

Some datalogs:






3rd gear pull (made 334kW or 454hp to the wheels with Performance Box):


As you can see, boost is ~19 PSI or even higher most of the time.

My questions:
1) Is this normal when autotuning is supposed not to be working?
2) What do you think about the logs? I don't understand much and don't know it the user adjustables that I set are OK. Maybe I can make it even more aggressive?

My mods are in the signature (all bolt-on's and RB turbos), 98 RON fuel (93-94 AKI).

Thanks in advance!

[enrita]

autotuning does not work at all on latest aggressive maps . also your timing looks not that good.
With 98 octane you should only use map 1 with the stock values as a start and raise them a bit after evaluating your timing .

[edo]

How can I tell whether timing is good or bad? It's the ignition correction channel?
I used map 1 with stock values except start boost and overboost limit as I believe 15 PSI is way too low for a FBO car with upgraded turbos... Keeping in mind that with older autotune (V5 7-29) maps and Rev2 it autotuned to almost the same boost levels (17.5-18.3 PSI). And these new ones are aggressive maps.

[pits200]

Ya man, you have no misfires but those logs don't look that good. They're not horrible but you def seem to still be having some bugs to work out.

[edo]

So where can I do some reading to understand what's wrong with the logs? Or can someone explain?
I checked V5 user manual - nothing about good and bad logs...

I won't be able to "work out the bugs" without understanding what's wrong with the logs.

[cn555ic]

Look at your can actual ign advance. The line should be somewhat linear with no significant drops in which yours doesn't. Advance is somewhat low to begin with and there is timing drops on each of your recorded logs, which means the dme is pulling timing due to running to aggressive which for your setup FBO with RBs it should not.

[edo]

Thanks! The strange this is I always used to get these timing drops, even with boost levels much lower than "normal" level for the mods...

[scottp999]

Some knock and timing related posts:

http://www.e90post.com/forums/showth...ighlight=knock
http://www.e90post.com/forums/showth...ighlight=knock
http://www.e90post.com/forums/showth...ighlight=knock

[edo]

Thanks! Will do some reading.

[enrita]

just run the stock values on map 1 , log and see. with that amount of boost you need meth or E85 or race gas. running 19psi without the octane can really cause big issues...

[edo]

Went for some data logging today. Found out what was the reason of high boost - I accidently turned autotuning on (2 instead of 1 in the user adjustable menu).

Switched autotining off, changed start boost and overboost limit to default settings and did some data logs.

9-10 aggressive beta map (FBO upgraded turbos MT), default settings (start boost 50%, overboost limit 17 PSI):

First run:


Second run:


Third run:


Fourth run (decided to lower start boost to 40%):


Fitth run (set start boost back to 50%):


Last run:


The first question is simple: WTF??? FBO, RB turbos, 98 octane fuel, moderate boost (my car used to autotune to ~same boost with stock turbos) and these f*cking timing drops... Could it be because of the fuel? I always fill my tank in the best brand gas station in my country (Statoil).
The second question: if autotune doesn't work and is switched off, how come boost almost all the time is higher than 16 PSI, sometimes even 17+PSI?

[scottp999]

Would love to see a zoom into just the 3rd gear section. The aggressive maps are different, they allow for more boost and timing in the mid-rpm range. I have been running a PPS meth kit for a couple of years. Currently running a 12 gallon per hour nozzle. I always run a high % of meth, even 100%. I always run the meth as secondary octane (to pump 93octane) and charge air cooling. I would bet those timing dips would disappear with meth. Maybe not something you are interested in? I run about 18.5 PSI in the mid-range that comes down to high 16, low 17 around 6700 rpm.

Maybe attach a screen print of your user settings?

[edo]

Originally Posted by scottp999

Would love to see a zoom into just the 3rd gear section. The aggressive maps are different, they allow for more boost and timing in the mid-rpm range. I have been running a PPS meth kit for a couple of years. Currently running a 12 gallon per hour nozzle. I always run a high % of meth, even 100%. I always run the meth as secondary octane (to pump 93octane) and charge air cooling. I would bet those timing dips would disappear with meth. Maybe not something you are interested in? I run about 18.5 PSI in the mid-range that comes down to high 16, low 17 around 6700 rpm.

Maybe attach a screen print of your user settings?

Here are the same runs in the same order, just zoomed 3rd gear:

1:


2:


3:


4:


5:


6:


I will make a printscreen of user adjustable settings tomorrow.

I wasn't planning to go with meth... All this installation, tanks in the trunk... I don't like it. Moreover, it is not so easy to buy meth in my country.

This really sucks. I was so hoping everything would be fine after I install RB turbos. But no... So many problems with this car I will start to hate it soon.
Speaking about those timing dops: as far as I remember I always had them. Ever since I bought Procede long time ago. And even with autotuning maps.

[edo]

Any ideas regarding my logs? What should I do to eliminate these timing drops?

[ragingpanda]

Sorry, I skimmed through the thread, but do you have E85 available in your area? It might help clean up your timing issues.

[edo]

I do have E85 in my area, but I don't really want to go with E85. Many modifications and I'm not sure if E85 is not harmful for our engines, lines, etc.
I drive my car very rarely and E85 fosters corrosion.

Is there any other way to find out the reason of these timing drops and get rid of them?

[enrita]

Originally Posted by edo

I do have E85 in my area, but I don't really want to go with E85. Many modifications and I'm not sure if E85 is not harmful for our engines, lines, etc.
I drive my car very rarely and E85 fosters corrosion.

Is there any other way to find out the reason of these timing drops and get rid of them?

yeah lower boost , use stock settings on map 1 .

[edo]

Originally Posted by enrita

yeah lower boost , use stock settings on map 1 .

I did lower boost to 14 PSI and it didn't help. And I used stock settings on map 1.
Even 14 PSI seems to be too low for my modifications and octane (FBO and RB turbos).
Others run higher boost with stock turbos without any timing drops...
I want to find out the cause of these timing drops. Is it possible to do with the help of fata logs?

[enrita]

Originally Posted by edo

I did lower boost to 14 PSI and it didn't help. And I used stock settings on map 1.
Even 14 PSI seems to be too low for my modifications and octane (FBO and RB turbos).
Others run higher boost with stock turbos without any timing drops...
I want to find out the cause of these timing drops. Is it possible to do with the help of fata logs?

you are not running 14 psi... just look at the boost, its like 17,4 at 4000 rpm and 15.8 at redline, THATS A LOT for 98 octane. when you open the log use your left and right arrows to follow the boost you are running throughout the rpm. lower even more. you really need to put some E85 in there or run meth if you want to push the boost up .
also there is NO need to run meth. you can just use denaturated alcohol

[edo]

Originally Posted by enrita

you are not running 14 psi... just look at the boost, its like 17,4 at 4000 rpm and 15.8 at redline, THATS A LOT for 98 octane. when you open the log use your left and right arrows to follow the boost you are running throughout the rpm. lower even more. you really need to put some E85 in there or run meth if you want to push the boost up .

But I set Start boost setting to 40%, which means 14PSI. I don't know why boost is higher. Should I set Overbost limit to lower PSI (I left fefault setting - 17 PSI)?
I know how to check my boost, thanks
A strange thing is my car used to autotune to 16+ PSI with stock turbos and to 18+ PSI with RB turbos with the latest autotune maps...

I read many bad things about E85 and 335i ~1.5 years ago (bad for our engines, fuel lines, fuel pumps, etc.). That is why I don't really want to go with E85. Plus, I should do many modifications, right?

Thanks for your help.