E85 Modification

[PhilippineT5]

can we use the E85 gas on our cars? or do we need a mod for that?

[nari]

can we use the E85 gas on our cars? or do we need a mod for that?

I run my car 60% 95octane 40% e85. No modifications.

However if you want to run your car 100% e85 you'll need modifications. (like bigger injectors/raised fuel pressure)

Or there are conversion kits too but they are expensive.

Ask member mojoman here. he knows more about e85.

[Marlboroman]

Green injectors from S60R and a better fuelpump, then you can run 100% E85

[ErikS]

can we use the E85 gas on our cars? or do we need a mod for that?

Can I ask why you would want to do that?

[turbomatt]

Can I ask why you would want to do that?

105 octane

[PhilippineT5]

Can I ask why you would want to do that?

cuz i was just reading the Heico c30 and s40 used in the nurburgring and the c30 works car used for the wtcc is using it..

and also cuz its only half the price of regular gas....

[ErikS]

What about long term engine internal corrosion, lean conditions, and adjusting the ECU?

Even though it may be 1/2 the price what will it do to fuel economy in these cars? Anyone have any real world data running 85% ethanol?

I know a TC non-FFV engine is the best use for E85. Just seems to me like more risk than reward.

[PhilippineT5]

What about long term engine internal corrosion, lean conditions, and adjusting the ECU?

I know a TC non-FFV engine is the best use for E85. Just seems to me like more risk than reward.

that what im interested to find out ;)

[PsychoBeano]

Green injectors from S60R and a better fuelpump, then you can run 100% E85

Would you need a tune for this as well? Could you just go back and forth whenever you wanted? Also, I have read that you get 15% fewer Miles to the Gallon. In my case, Im losing 4 mpg, but still saving money in the long run over gas (If I go to the one E85 station in town)

After some calculations, It comes out to E85 Costing $0.15 a mile versus $0.17 a mile using todays gas and local ethanol prices. There are extremes though, such as in Colorado where gas is $4.05 versus $2.79 E85 which comes out to be 14 Cents versus 11 Cents, respectively.

[PhilippineT5]

im curious about the 105 octane

since i plan to use a bigger turbo and a custom tune, it might work..

[ErikS]

Would you need a tune for this as well? Could you just go back and forth whenever you wanted? Also, I have read that you get 15% fewer Miles to the Gallon. In my case, Im losing 4 mpg, but still saving money in the long run over gas (If I go to the one E85 station in town)

After some calculations, It comes out to E85 Costing $0.15 a mile versus $0.17 a mile using todays gas and local ethanol prices. There are extremes though, such as in Colorado where gas is $4.05 versus $2.79 E85 which comes out to be 14 Cents versus 11 Cents, respectively.

How much would our ECU's adjust to going back and forth? I would think the A/F would be way out and allow in to much O2, causing lots of long term problems in our engines.

There is also the food into fuel arguement, but that's for another forum.

E85 is 85% ethanol, %15 gasoline.

100% ethanol and you'd never have to worry about BYOB to a party :lol:

[PsychoBeano]

Im pretty sure when he said 100% Ethanol, he meant as in not half regular gas and half e85.

haha, drinking or driving, your choice! We would all ride bikes, lol.

[ErikS]

Im pretty sure when he said 100% Ethanol, he meant as in not half regular gas and half e85.

haha, drinking or driving, your choice! We would all ride bikes, lol.

Half gas and half ethanol would be E50. I guess we all should be calling gas at the pump E10.

Cheers!

[RZT5]

I think you would need your ECU re-tuned for E85 to run it properly. it has a different stoichiometric AFR than gas does so a fuel map for gas wont cut it. This would be really cool to do though! one of the chip tuners should come out with an E85 chip. I would buy it for sure

and there is no risk to your engine when using E85, unless it confuses the ECU so much that it runs lean and overheats the engine

[Marlboroman]

Would you need a tune for this as well? Could you just go back and forth whenever you wanted? Also, I have read that you get 15% fewer Miles to the Gallon. In my case, Im losing 4 mpg, but still saving money in the long run over gas (If I go to the one E85 station in town)

After some calculations, It comes out to E85 Costing $0.15 a mile versus $0.17 a mile using todays gas and local ethanol prices. There are extremes though, such as in Colorado where gas is $4.05 versus $2.79 E85 which comes out to be 14 Cents versus 11 Cents, respectively.

We'll you could if you changed back to the stock injectors. To make it go absolutely 100% and make use of the higher octane you will need a remap. But it works fine with the stock ecu + E85. Not uncommon here due to the fact a litre 98 octane is about 1$ more expensive per litre than E85.

With E85 you get a lot more power if you tune it properly, and have the engine for it.