[Skyhigh]

Originally Posted by c3ffee

Hi guys, can you take a look at my logs -
https://datazap.me/u/c3ffee/540ix-mh...44-45-46-47-48
https://datazap.me/u/c3ffee/540ix-mh...43-44-45-46-47
https://datazap.me/u/c3ffee/540ix-mh...44-45-46-47-48
mhd support said all good, but this is fine if timing corrections > 6 sometime?
Should I watch the corrections during the whole 4th gear, or at peak rpm? And what does mean 'timing delta for knock adapt'.

MHD are in my opinion way too "tolerant" for corrections. For the sake of your own car and the fact that things can get worse with higher temperatures and variable environmental conditions, I would try to reduce timing delta for knock adaptation, ideally to 0 or close to. This can be achieved by better fuel quality (or Ethanol add-on) or by using a less aggressive map (e.g. one meant for a lower grade fuel or lower stage).

If you are however after maximum performance at the cost of higher risk - you can of course run it as is and maybe keep an eye on it to make sure it doesn't get worse with other fuels and temperatures.

[IMS-340C]

A higher tune is not necessarily better performance, sometimes it's even worse.

Originally Posted by Skyhigh

If you are however after maximum performance at the cost of higher risk - you can of course run it as is and maybe keep an eye on it to make sure it doesn't get worse with other fuels and temperatures.

[BMW335l]

Originally Posted by IMS-340C

It's not bad, you want timing delta to be close to zero and you don't want -2 or more in ALL cylinders.

I would say give Stage 1 a try.

Do you mean actual -2 timing on cyl 1-6 or that they should not differ between each cylinder more then 2?

I believe mine was at 1-2 on cyl 1 and around 6-8 on the rest of the cylinders.
So you want timings on all cyl to be >-2?

[IMS-340C]

No more than -2 timing corrections in ALL cylinders, your current timing corrections are ok but combined with -1 timing delta not great.

Originally Posted by BMW335l

Do you mean actual -2 timing on cyl 1-6 or that they should not differ between each cylinder more then 2?

I believe mine was at 1-2 on cyl 1 and around 6-8 on the rest of the cylinders.
So you want timings on all cyl to be >-2?

[c3ffee]

Can 'torque lim. 1' = 131072 mess up logs, and make more corrections?

[BMW335l]

Originally Posted by c3ffee

Can 'torque lim. 1' = 131072 mess up logs, and make more corrections?

Great question. Want to know this as well, or if it's just traction control.

Originally Posted by IMS-340C

No more than -2 timing corrections in ALL cylinders, your current timing corrections are ok but combined with -1 timing delta not great.

Great thanks!

[vcx]

Guys, I dare to ask my question again..

How is it possible to have a misfire in one cylinder (n°1) and, at the same time, the misfire counter indicates 0 ?

Thank you!

[WrxToBeamerGuy]

Originally Posted by B58

Are you running a catted or cat-less dp?

Catted active autowerke

[BMW335l]

I have tried stage 2 95 now, and it doesn't look that good.
What do you guys think?

What can I do, can this be caused by something else then bad fuel?
https://datazap.me/u/bmw335ie92/log-...39-40-41-42-48

https://datazap.me/u/bmw335ie92/log-...38-39-40-41-42

[IMS-340C]

No it's the fuel, try Stage 1 95 and 98 tunes.

Originally Posted by BMW335l

I have tried stage 2 95 now, and it doesn't look that good.
What do you guys think?

What can I do, can this be caused by something else then bad fuel?
https://datazap.me/u/bmw335ie92/log-...39-40-41-42-48

https://datazap.me/u/bmw335ie92/log-...38-39-40-41-42

[BMW335l]

Originally Posted by IMS-340C

No it's the fuel, try Stage 1 95 and 98 tunes.

So the only option right now if I want to run stage 2 is to mix some E85?
How much E85 should I try with stage 2 98 tune?

I have the stock HPFP and I want to run a safe amount of E85. Is the fuel system made for up to E20?

[IMS-340C]

Just to make it clear your Stage 2 logs are not that bad.
Timing corrections don't make the car slower but low ignition timing does.
If you have access to Ethanol and it's not a headache to mix it go for it.
You should safely use E30 including the % in the gasoline.
For Stage 2 98 you won't need more than E15.
If you have access to Ethanol you can run Stage 2 102 on an E25 fuel mix.

Originally Posted by BMW335l

So the only option right now if I want to run stage 2 is to mix some E85?
How much E85 should I try with stage 2 98 tune?

I have the stock HPFP and I want to run a safe amount of E85. Is the fuel system made for up to E20?

[BMW335l]

Originally Posted by IMS-340C

Just to make it clear your Stage 2 logs are not that bad.
Timing corrections don't make the car slower but low ignition timing does.
If you have access to Ethanol and it's not a headache to mix it go for it.
You should safely use E30 including the % in the gasoline.
For Stage 2 98 you won't need more than E15.
If you have access to Ethanol you can run Stage 2 102 on an E25 fuel mix.

Thanks for your input. I I'm a bit surprised as I thought we had good fuel in Sweden. I guess "had" is the takeaway here.

If i understood it correctly. My timing delta for knock adapt should be closer to 0 and my timing corrections should be closer to -2 for all cylinder at all times ideally. But it was not horribly bad when I ran stage 2 98.

I will definitely try to mix E85 as I have it close by. Will try stage 2 98 with 15% E85. 98 here is already E5 so I will add another 10% units.
Are there any good mixing calculator available?

[IMS-340C]

Your fuel might be ok but it's the tune that might need higher octane.
Ideally timing delta and corrections should be zero.
Personally in my car I never run more than -0.2 timing delta and -1.5 corrections in SOME cylinders.
Definitely go for Stage 2 102 on E25 fuel mix.
Start by adding 8 liters of E85 and you should be around E20-E25.
Many online calculators just google Ethanol Calculator and see which one you like.

Originally Posted by BMW335l

Thanks for your input. I I'm a bit surprised as I thought we had good fuel in Sweden. I guess "had" is the takeaway here.

If i understood it correctly. My timing delta for knock adapt should be closer to 0 and my timing corrections should be closer to -2 for all cylinder at all times ideally. But it was not horribly bad when I ran stage 2 98.

I will definitely try to mix E85 as I have it close by. Will try stage 2 98 with 15% E85. 98 here is already E5 so I will add another 10% units.
Are there any good mixing calculator available?

[BMW335l]

Originally Posted by IMS-340C

Your fuel might be ok but it's the tune that might need higher octane.
Ideally timing delta and corrections should be zero.
Personally in my car I never run more than -0.2 timing delta and -1.5 corrections in SOME cylinders.
Definitely go for Stage 2 102 on E25 fuel mix.
Start by adding 8 liters of E85 and you should be around E20-E25.
Many online calculators just google Ethanol Calculator and see which one you like.

I have done some more testing with E10-E20. Here are the result. What do you think. Timing looks better, but I still see the torque limit

https://datazap.me/u/bmw335ie92/stage-2-e15-20-0
https://datazap.me/u/bmw335ie92/stag...og=0&data=4-23

[IMS-340C]

Looks good you could increase ethanol a little but keep an eye on fuel pressure as it's starting to struggle.

Don't worry about torque limiter it's not affecting anything.

Originally Posted by BMW335l

I have done some more testing with E10-E20. Here are the result. What do you think. Timing looks better, but I still see the torque limit

https://datazap.me/u/bmw335ie92/stage-2-e15-20-0
https://datazap.me/u/bmw335ie92/stag...og=0&data=4-23

[BMW335l]

Originally Posted by IMS-340C

Looks good you could increase ethanol a little but keep an eye on fuel pressure as it's starting to struggle.

Don't worry about torque limiter it's not affecting anything.

Thanks, definitely an improvement!

Do you believe this setup is safe?
Does my rail/fuel pressure look good as is and at what pressure is to low, what should I keep it above to be safe?
Will E20 degrade the fuel system?

Sorry for a bunch of questions, trying to learn the B58.

[IMS-340C]

It's ok if fuel pressure dips to 2500 psi momentarly but not the entire RPM range.
Yes this setup is safe but unfortunately you won't be able to run stage 2 102.

Originally Posted by BMW335l

Thanks, definitely an improvement!

Do you believe this setup is safe?
Does my rail/fuel pressure look good as is and at what pressure is to low, what should I keep it above to be safe?
Will E20 degrade the fuel system?

Sorry for a bunch of questions, trying to learn the B58.

[BMW335l]

Originally Posted by IMS-340C

It's ok if fuel pressure dips to 2500 psi momentarly but not the entire RPM range.
Yes this setup is safe but unfortunately you won't be able to run stage 2 102.

I won't he able to run 102 just because of my fuel quality?

I guess it's the rail pressure mean 1 I should watch.
Whats the ideal pressure thought the rev range?

[IMS-340C]

It's the Ethanol that puts pressure on the HPFP and you will need more to run stage 2 102.

Pressure should be around 2900 psi.

Originally Posted by BMW335l

I won't he able to run 102 just because of my fuel quality?

I guess it's the rail pressure mean 1 I should watch.
Whats the ideal pressure thought the rev range?

[BMW335l]

Originally Posted by IMS-340C

It's the Ethanol that puts pressure on the HPFP and you will need more to run stage 2 102.

Pressure should be around 2900 psi.

Great, thanks! Will keep an eye on the pressure. Will try E20 and then take a look at the log.

I have the stock air box with the stock filter. Is the stock filter a restriction when running Stage 2?

[IMS-340C]

Stock filter is good.

Originally Posted by BMW335l

Great, thanks! Will keep an eye on the pressure. Will try E20 and then take a look at the log.

I have the stock air box with the stock filter. Is the stock filter a restriction when running Stage 2?