[falconey]

I have two E85 stations really close to my home and I've been waiting for the day I meet another tuned BMW driver at the E85 pump. It had never happened until a few days ago. I pull up to the pump and a guy in a late model 6 series(not a BMW expert so don't know year) pulled up right before me. So when I see him getting ready to pump his fuel I walk up to him and ask him if he's tuned. I was very intrigued to know numbers for a tuned 6 series. Well the guy looked at me like I called his mom out her name. So I asked again and this time I could tell he made out what I said and he responded with a "no". So I said why are you about to pump E85? He looks at me, then looks at the pump and goes OH ISHT Man, thanks for saving my arse. He proceeds to move to another pump. lmao!

[GB-335xiCoupe]

Some forum members have mentioned that they add 2-3 gallons to the tank, then fill with premium to get more hp out of a stock 335i. Huh? I guess so. But I hate ethanol, avoid it at all costs.

[falconey]

Originally Posted by GB-335xiCoupe

Some forum members have mentioned that they add 2-3 gallons to the tank, then fill with premium to get more hp out of a stock 335i. Huh? I guess so. But I hate ethanol, avoid it at all costs.

That's interesting. I would think if you don't have a tune there would be no benefits outside of the cheaper fuel. My understanding is the DME would still limit boost to stock levels without a tune.

[Delta0311]

Around my way we get a little crazy like so.. Gas fight!!!!

[BQTuning]

Originally Posted by GB-335xiCoupe

Some forum members have mentioned that they add 2-3 gallons to the tank, then fill with premium to get more hp out of a stock 335i. Huh? I guess so. But I hate ethanol, avoid it at all costs.

I bought my car brand new in 2011. In the begining of 2012 I switched to using ethonal mix from E30 to now E60. I have 67k miles on my car in which that last 45k miles was E30 - E60 fuels with a saving of $10-$15 every tank visit.

Car has been extremely happy, no issues, no HPFP or LPFP issues.

I dont know why you would say such a thing "....avoid at all costs...." it is simply your prejudice, and misleading people with the same ignorance

[Blackhawk36]

Ethanol has higher octane rating (113) but lower energy content (71,000 Btu/gal vs. 114,000 Btu/gallon. Translates to less knocking and less MPG, 1/3 less. That $10-15 savings per tank is break-even at best due to lower MPG. With your tunes though, the higher octane rating is definitely worth it.

[BQTuning]

Originally Posted by falconey

That's interesting. I would think if you don't have a tune there would be no benefits outside of the cheaper fuel. My understanding is the DME would still limit boost to stock levels without a tune.

There is always a benefit when increasing octane levels, to a limit, especially with fuel that has a high tolerance to detonation more than even race gas

I would bet anyone here stock tune vs stock tune on same car, if you use main stream 93 octane vs E20, the car using E20 will pull ahead.

Here is the break down

Using the 335i N54 as an example: Stock timing targets about 8°-10° timing at WOT. You will never see that on a consistant level using 93 octane or less at the pump, depending on the fuel quality, the DME will pull timing thus rendering less power

Adding 2-3 gallons of E85 will reduce timing pulls dramitically, rendering more power and less money spent at the tank

[mike-y]

Originally Posted by BuraQ

Adding 2-3 gallons of E85 will reduce timing pulls dramitically, rendering more power and less money spent at the tank

Do you have any dynos of this type of mix? how much better is the mpg? I have always seen E85 get much worse mpg, so I'd think a small mixture of it would balance out somewhat, and still give less mpg, but not as bad as straight E85.

[GB-335xiCoupe]

Originally Posted by BuraQ

I bought my car brand new in 2011. In the begining of 2012 I switched to using ethonal mix from E30 to now E60. I have 67k miles on my car in which that last 45k miles was E30 - E60 fuels with a saving of $10-$15 every tank visit.

Car has been extremely happy, no issues, no HPFP or LPFP issues.

I dont know why you would say such a thing "....avoid at all costs...." it is simply your prejudice, and misleading people with the same ignorance

Without getting into a political argument, let me say that I personally avoid ethanol, and it's not from a mechanical perspective, but more an economic perspective. The government has seriously f'd this up, from ruining farmers to unnecessarily raising the price of all of our food. If you want, I can find a documentary explaining it.

From a performance aspect, I'm not arguing anything with you, as I'm not familiar enough with it. I do have a Vishnu tune, so maybe I will try it once...

[sy2767]

I usually run COBB stage 1 agg and use 94 with 10% ethanol blend. good or bad? Car seems to run just fine and pulls great!

[e92_enthusiast_1]

Using 94 octane is fine. If you're gonna go with any more ethanol (> 10/15%) though its best to be tuned for it if not it doesn't take advantage of it, at least power wise.

Originally Posted by sy2767

I usually run COBB stage 1 agg and use 94 with 10% ethanol blend. good or bad? Car seems to run just fine and pulls great!

[GB-335xiCoupe]

Some interesting info in this article...
http://en.m.wikipedia.org/wiki/E85
I didn't know the blend could vary so much: 51% to 83% etOH. Yet another misleading nomenclature, courtesy of Uncle Sam.

[e92_enthusiast_1]

Yeah its kinda dumb the variation is so great.

Originally Posted by GB-335xiCoupe

Some interesting info in this article...
http://en.m.wikipedia.org/wiki/E85
I didn't know the blend could vary so much: 51% to 83% etOH. Yet another misleading nomenclature, courtesy of Uncle Sam.

[iturbo_bmw]

soo back to the original topic... (lets not start another e85 is good/bad thread)..

i have to yet to see another bmw at a e85 pump.. i see sti's or evo's once in a while but usually everyone is just staring at me thinking i'm about to fuck up my car lol. these *****s don't know

I also end up pissing off a lot of ppl trying to get to the e85 pump. its in between two gas pumps and no expects anybody to use the e85 pump so i have to barge my way in and then they look at me like wtf am i doing taking their spot (cause i end up blocking one gas pump) when i've been waiting for 10 min already.. its annoying when there's hella traffic..

[GB-335xiCoupe]

Originally Posted by iturbo_bmw

soo back to the original topic... (lets not start another e85 is good/bad thread)..

i have to yet to see another bmw at a e85 pump.. i see sti's or evo's once in a while but usually everyone is just staring at me thinking i'm about to fuck up my car lol. these *****s don't know

I also end up pissing off a lot of ppl trying to get to the e85 pump. its in between two gas pumps and no expects anybody to use the e85 pump so i have to barge my way in and then they look at me like wtf am i doing taking their spot (cause i end up blocking one gas pump) when i've been waiting for 10 min already.. its annoying when there's hella traffic..

No I don't want to make this an E85 debate either... now I just have to figure out which gas station to go to... I don't think my normal station has it...

[BQTuning]

Originally Posted by mike-y

Do you have any dynos of this type of mix? how much better is the mpg? I have always seen E85 get much worse mpg, so I'd think a small mixture of it would balance out somewhat, and still give less mpg, but not as bad as straight E85.

No need for a dyno, anyone who has access to a datalogger will see what the 93 octane or less vs E25 mix does to your timing. It doesnt take a dyno to prove loss of power when timing pulls occure.

The only reason why E85 mix would give lower MPG is because of the driver or the tuning.

E85 mix advances timing which produces more torque that consumes more fuel. In stop and go traffic if the throttle map is not reduced it will have a lower MPG rating

Majority highway "casual" driving, if you dont have a lead foot, will show better MPG over 93 pump gas or less

Here is an "Official" site on E85 on fuel economy and performance : http://www.afdc.energy.gov/fuels/ethanol_benefits.html

As a reminder to all, Brazil has the same BMW cars we have here in NA, nothing different. They also have a BMW plant facility. Brazil's consensus of fuel is E25 which is "manditory" http://www.bio-brazil.org/

So we have all BMW cars in Brazil, made in Brazil, that use E25.

[BQTuning]

So why the hell would BMW build a plant in Brazil, market their cars in Brazil that use E25, export them to NA, and now Brazil will be making E30 manditory soon in the future ?

[tc535i]

exchange insurance information

[mike-y]

well, I was interested in how it balances out.. since ethanol gives less energy overall, the effect would somewhat be canceled out by the dme not pulling timing, but even then, I've never seen an ethanol vehicle actually get better (or the same) mpg as gasoline. Though I'm not debating the performance improvements.

even the link you posted says E85 gets worse mileage:

Fuel Economy and Performance

A gallon of ethanol contains less energy than a gallon of gasoline. The result is lower fuel economy than a gallon of gasoline. The amount of energy difference varies depending on the blend. For example, E85 has about 27% less energy per gallon than gasoline (mileage penalty lessens as ethanol content decreases). However, because ethanol is a high-octane fuel, it offers increased vehicle power and performance.

[Dark_Knight_335]

Ask for his license and registration- depending upon the severity of the damage.

Otherwise I ask them out on a date- no strings attached of course.

[Delta0311]

Originally Posted by Dark_Knight_335

Ask for his license and registration- depending upon the severity of the damage.

Otherwise I ask them out on a date- no strings attached of course.

What if its a dude?

[tc535i]

Originally Posted by Delta0311

What if its a dude?

oh look at Pat Robertson over here