[freshwater]

Can E90 cars use E85 Gas.
What the difference in performance and mileage.

I normally used Octane 93.

[BOBKUR]

If you want to ruin the fuel system then fill it up. Your car calls for 93 octane, E85 is meant for flex fuel vehicles. Search out E85 and flex fuel.

[freshwater]

I read few on this board they mixing Octane 91 with E85 and seeing better performance on E92.
But Ethanol do give bad mileage as compare to Octane 93.

[thenewrick]

If you have a JB4 you can use a blend of 40% E85 and 60% pump gas and run the autotune map to get more power at the cost of mpg.

[xzibit a]

Originally Posted by BOBKUR

If you want to ruin the fuel system then fill it up. Your car calls for 93 octane, E85 is meant for flex fuel vehicles. Search out E85 and flex fuel.

Dont reply to topics that you know nothing about. Tons of people are running e85 straight and in a Blend form. Nothing has been damaged.

OP you def. can search out E85 and its uses. It does take tuning and or additional(for modiefied cars with a high concentration of e85) components to use e85 correctly.

most people who use e85 are extrememly happy with the results as you can get alot more power out of your car(with the correct tuning) vs using 93

[BOBKUR]

Originally Posted by xzibit a

Dont reply to topics that you know nothing about. Tons of people are running e85 straight and in a Blend form. Nothing has been damaged.

OP you def. can search out E85 and its uses. It does take tuning and or additional(for modiefied cars with a high concentration of e85) components to use e85 correctly.

most people who use e85 are extrememly happy with the results as you can get alot more power out of your car(with the correct tuning) vs using 93

Excuse me ALMIGHTY ONE! Why would one want to tune and modify to run E85.

[PR3CI5N]

E-85 is amazing but only with a tune like the JB4. I highly doubt you'd be able to run E-85 on a stock 335i without throwing all types of fuel mixture codes. If you're tuned then 100% find a E-85 station and mix 4-6 gallons of it with your 93 octane (10-12 gallons of 93 and the rest E-85). You won't be dissappointed. Good luck

[BOBKUR]

Originally Posted by xzibit a

Dont reply to topics that you know nothing about. Tons of people are running e85 straight and in a Blend form. Nothing has been damaged.

OP you def. can search out E85 and its uses. It does take tuning and or additional(for modiefied cars with a high concentration of e85) components to use e85 correctly.

most people who use e85 are extrememly happy with the results as you can get alot more power out of your car(with the correct tuning) vs using 93

No wonder your 335's have all the wastegate and turbo problem's from the screwing around you do to them.

[xzibit a]

Originally Posted by BOBKUR

No wonder your 335's have all the wastegate and turbo problem's from the screwing around you do to them.

instead of responding, ill just ignore you as you are trolling

[psmitty95]

Originally Posted by BOBKUR

Excuse me ALMIGHTY ONE! Why would one want to tune and modify to run E85.

This is why.

[Sean335i]

^big gains, but how much can you expect out of a fuel delivery swap for e85 vs. the procede tune?

gotta get apples to apples

[xzibit a]

Tuned cars with DCI/ FMIC typically are in the 340-360 WHP range.

[psmitty95]

Originally Posted by ElsucioSeanchez

^big gains, but how much can you expect out of a fuel delivery swap for e85 vs. the procede tune?

gotta get apples to apples

Cars with tune only are usually in the 340-360whp range. FBO usually 380-400 depending on dyno and conditions

[RnmEvo9]

You will want a tune to take full advantage of the E85 blends mixed with 93 octane gas. It is a night and day difference compared to running strictly 93 octane gas. Here are a few of my dragslips with the Cobb E30 race map, Helix FMIC, and Raceland downpipes on stock runflats:

[Be Awesome 335i]

Originally Posted by BOBKUR

Excuse me ALMIGHTY ONE! Why would one want to tune and modify to run E85.

This guy obviously doesn't spend to much time in the Turbo/Engine Tuning Section....

Originally Posted by BOBKUR

No wonder your 335's have all the wastegate and turbo problem's from the screwing around you do to them.

Nither does this guy!!

Originally Posted by RnmEvo9

You will want a tune to take full advantage of the E85 blends mixed with 93 octane gas. It is a night and day difference compared to running strictly 93 octane gas. Here are a few of my dragslips with the Cobb E30 race map, Helix FMIC, and Raceland downpipes on stock runflats:

Enough Said..

[BOBKUR]

Originally Posted by Be Awesome 335i

This guy obviously doesn't spend to much time in the Turbo/Engine Tuning Section....


Nither does this guy!!



Enough Said..

I drive it as a car, not a race car.

[Be Awesome 335i]

Originally Posted by BOBKUR

I drive it as a car, not a race car.

Completely understandable and that's your choice and many out there do just that however, there are also many that modd these cars and still "drive it as a car" and then there are those that "drive it like a race car"

Who cares... Fact is, you CAN run E85 blends with tunes and all will be A-OK like others have said above...

To tell someone they CANT run E85 and if they do....BOOM well, that's just silly to be giving terrible advice/answers..

There is plenty i read on here and many times, almost provide my .02 however, if i don't know the answer, i scroll on by....

Nothing more

[freshwater]

I will be having Cobb Tune and be doing stage1 with Octane 93. No other mods yet.
Like to get comfortable with stage +1 first before adding anything else like downpipes or Intakes or Exhausts...

I read a guy has JB4 and using Octane 91 and E85 mix and seeing a big improvement in the performance..

[xzibit a]

cobb stage 1+ is for cars that have an upgraded intercooler. your going to want to run Stg 1 agressive. Make sure you log it and post it in the Cobb thread and see if everything is good. if its not you can add a few gal of e85 and relog

[psmitty95]

Originally Posted by freshwater

I will be having Cobb Tune and be doing stage1 with Octane 93. No other mods yet.
Like to get comfortable with stage +1 first before adding anything else like downpipes or Intakes or Exhausts...

I read a guy has JB4 and using Octane 91 and E85 mix and seeing a big improvement in the performance..

Yes even with nothing but a tune you will see some pretty big gains just running E85

[freshwater]

Originally Posted by xzibit a

cobb stage 1+ is for cars that have an upgraded intercooler. your going to want to run Stg 1 agressive. Make sure you log it and post it in the Cobb thread and see if everything is good. if its not you can add a few gal of e85 and relog

sorry I mean to say Stg 1 agressive not +1. Will post the results by end of week once I tuned with COBB stg 1. I dont even know their is a Cobb forum.

A good article on E85 .

"Some vehicles can actually be converted to use E85 despite not being specifically built for it. Because of the lower heating value E85 has a cooler intake charge—which, coupled with its high stability level from its high octane rating—has also been used as a "power adder" in turbocharged performance vehicles. These modifications have not only resulted in lower GHG emissions, but also resulted in 10-12% power and torque increase at the wheels. E85 has an octane rating higher than that of regular gasoline's typical rating of 87, or premium gasoline's 91-93. This allows it to be used in higher-compression engines, which tend to produce more power per unit of displacement than their gasoline counterparts, in theory E85 is less carbon intensive than petroleum."


Now the only concern I have is what is the relationship between long use of Ethanol and HPFP, I remember reading many posts that the HPFP failure in BMW were blamed on Ethanol, for the fact that USA used Ethanol like 10% in the regular Gas and Europe don't. Not sure how much Truth is in the above statement but Jury is still out on that.
I did end up changing mine around 55k and after that I see no issues maybe the New HPFP has fixed the problem...