[TomDenmark]

Not that anyone probably care, but anyway I thought I would share this piece of information.

The Stop/Start function does not work when running on Ethanol.
I hope and expect they will fix this issue with a software update at next service.

Otherwise It seems to run very well on ethanol. Got 9km/L and 10,5km/L on Gasoline. I've got lots of city traffic and not so much highway.

Seems there is a little money to save by using Ethanol, even without the Stop/Start function.

One observation I have mad tough, is that the computer in the car is much more pessimistic of the fuel consumption when running on ethanol. But the Odometer can't lie. I'm not sure exactly what is going on here.

I will keep running on ethanol now, can't feel any difference in performance anyway so why not?

[zamba]

Tom using JB4 on map 5 I noticed that my car was more powerful than with Podium gas. Strange thing here is that max boostwith ethanol is arounf 13 and with gas it increases to 15.5. I would like to hear from you if happens the same in your bimmer

[ricky27]

I'm using bms stage 1 in the 328i active flex, and i can definitely feel the car more powerful or responsive with ethanol than podium gas.

[zamba]

Originally Posted by ricky27

I'm using bms stage 1 in the 328i active flex, and i can definitely feel the car more powerful or responsive with ethanol than podium gas.

Ricky, do you know how much boos are you getting on ethanol and gas?

your car already runs stock with 12 psi, correct?

[ricky27]

Originally Posted by zamba

Ricky, do you know how much boos are you getting on ethanol and gas?

your car already runs stock with 12 psi, correct?

hahaha sorry, but i don't know, i don't have nothing to measure boost :/

[TomDenmark]

I think I noticed that I'm not as close to the boost target when running on ethanol. I don't know why, but ethanol still feels faster.

So yes, I guess I have the same thing.

I'm using map1 now.

[smithf80]

Why in the world would BMW fix the ASS for cars running ethanol?

[TomDenmark]

Originally Posted by smithf32

Why in the world would BMW fix the ASS for cars running ethanol?

Is there a good reason why its deactivated? Sounds like you know something we don't.

[smithf80]

Originally Posted by TomDenmark

Is there a good reason why its deactivated? Sounds like you know something we don't.

I don't know why it's deactivated but I don't understand why you would expect BMW to fix something that only is a problem when you are tuning your car which they obviously do not want you to do.

Also please note that the auto store stop does not work in very cold temperatures so if you have only been trying this when it was cold out that might also be your issue.

[TomDenmark]

Originally Posted by smithf32

I don't know why it's deactivated but I don't understand why you would expect BMW to fix something that only is a problem when you are tuning your car which they obviously do not want you to do.

Also please note that the auto store stop does not work in very cold temperatures so if you have only been trying this when it was cold out that might also be your issue.

No and NO.

1. My car is supposed to run on ethanol = E100 has nothing to do with my tuning. Was like this from stock.

2. No it's no very cold in brazil for your information.

3. Yes. I bought a car which should have ASS and also be able to run on ethanol. BMW never mentioned anywhere that ASS does not work when running on ethanol. So YES they should fucking fix it otherwise they were lying when they sold me my car.

[smithf80]

Originally Posted by TomDenmark

No and NO.

1. My car is supposed to run on ethanol = E100 has nothing to do with my tuning. Was like this from stock.

2. No it's no very cold in brazil for your information.

3. Yes. I bought a car which should have ASS and also be able to run on ethanol. BMW never mentioned anywhere that ASS does not work when running on ethanol. So YES they should fucking fix it otherwise they were lying when they sold me my car.

OH! My bad, I had no idea there was any BMW that actually intentionally runs of ethanol, we have nothing like that here in America, and I know a lot about other markets and BMW's but I've never heard of a flexfuel BMW.

[ricky27]

Originally Posted by smithf32

OH! My bad, I had no idea there was any BMW that actually intentionally runs of ethanol, we have nothing like that here in America, and I know a lot about other markets and BMW's but I've never heard of a flexfuel BMW.

In Brazil we have the N20 engines with flex fuel, they are called Active Flex, and i also don't know why the ASS won't work when running E100... as far as i know, the ASS stops working when it detects 30% or more of Ethanol in the tank.

[TomDenmark]

I don't think a solution is coming anytime soon.. They also wanted to increase the service interval from 8k to 12k km, but they don't know how to do it

[alphapunk2]

alot of cars have flex fuel capabilities in thailand. Pure gasoline is hard to find now, since the government is pushing towards gasohol (10% ethanol 90% gasoline).

the BMW petrol variants here all run on gasohol no problem~

i saw a few honda accords that can run on 85% ethanol btw~~

[ricky27]

Originally Posted by TomDenmark

I don't think a solution is coming anytime soon.. They also wanted to increase the service interval from 8k to 12k km, but they don't know how to do it

wow, my first service will be coming up in 1000km, and i only have 4000k

[TomDenmark]

Originally Posted by ricky27

wow, my first service will be coming up in 1000km, and i only have 4000k

Yep, it's 8k but it will come in 5k because of your driving pattern... so they say.
I also had 2 services before reaching 10.000km, and then suddenly they want to change it to 12.000km service interval. I make an appointment, wasted 2 hours waiting for them to tell me they don't know how to do it.

If you ask me, they are just butt raping us, those stupid son's of b*****.

I will not be looking to BMW for my next car. I can't believe any other brand allowing this bullshit.
It's an embarrassment to the name.

[ricky27]

Originally Posted by TomDenmark

Yep, it's 8k but it will come in 5k because of your driving pattern... so they say.
I also had 2 services before reaching 10.000km, and then suddenly they want to change it to 12.000km service interval. I make an appointment, wasted 2 hours waiting for them to tell me they don't know how to do it.

If you ask me, they are just butt raping us, those stupid son's of b*****.

I will not be looking to BMW for my next car. I can't believe any other brand allowing this bullshit.
It's an embarrassment to the name.

Hahahaha, maybe it's cause of my driving pattern ,
well, my other BMW never had any issues, and i hope i only have to do 1 service before reaching 10000km, otherwise i will be pissed. It's not cheap

[zamba]

Originally Posted by TomDenmark

I think I noticed that I'm not as close to the boost target when running on ethanol. I don't know why, but ethanol still feels faster.

So yes, I guess I have the same thing.

I'm using map1 now.

What's you fellings after running MAP1, did you fell more power in low revs or measure 0-100 gain?! I saw a MAP1 log somewhere and I realized that it was facing some big drops on ING timming.

Running map5, How much boost do you get on Ethanol and Podium?

[TomDenmark]

Originally Posted by zamba

What's you fellings after running MAP1, did you fell more power in low revs or measure 0-100 gain?! I saw a MAP1 log somewhere and I realized that it was facing some big drops on ING timming.

Running map5, How much boost do you get on Ethanol and Podium?

Started to get wheelspin on Map1 about 4-5k rpm, and I can feel the difference between map5 and map1 easily.

Attached jpg's from logs both 1,2 and 5 some ethanol some pumpgas (shell v-power)

[zamba]

Originally Posted by TomDenmark

Started to get wheelspin on Map1 about 4-5k rpm, and I can feel the difference between map5 and map1 easily.

Attached jpg's from logs both 1,2 and 5 some ethanol some pumpgas (shell v-power)

On MAP 1 and 2 your IGN advance is increasing considerably when compared to map5. I think I can't use map 1 or 2, my IGN advance on map 4/5 is already reaching 18 on high revs.

One day let's put horses nose to nose to compare difference.

[TomDenmark]

Originally Posted by zamba

On MAP 1 and 2 your IGN advance is increasing considerably when compared to map5. I think I can't use map 1 or 2, my IGN advance on map 4/5 is already reaching 18 on high revs.

One day let's put horses nose to nose to compare difference.

ohh, didn't notice you were from campinas..
I'm no expert on reading these data.. I thought higher IGN advance was better?
Our cars should behave pretty much identically?

Can meet up anytime, but I don't know any good places. I'm struggling finding flat straight road without cars and cameras.

[Thumper333]

Originally Posted by TomDenmark

One observation I have mad tough, is that the computer in the car is much more pessimistic of the fuel consumption when running on ethanol. But the Odometer can't lie. I'm not sure exactly what is going on here.

Ethanol is very different from gasoline, I agree with you that I would expect them to have designed the car with it's allowable fuel types in mind. That said, they may have hit a technology roadblock and had to make a choice.

Ethonal has a much lower energy per unit, so while it's cheaper and has higher octane, it's supplied energy is lower and therefore requires more to do the same work. The system may be over doing the formula it was programmed with when calculating remaining miles based on tank level.