[Lowkey F10]

Before I owned my 550i I had a 370z so excuse me if this is a stupid question. I want to run E85 or E54 in my 550i but I’m not sure if I would need anything upgraded or some sort of tune to run ethanol? I have the VRTune by Vivid Racing

[Stück]

Unless you've already exceeded the limitations of premium 91/93 octane knock resistance there is no reason to run ethanol blends.

[Lowkey F10]

Any answers to my question?

[Lowkey F10]

Originally Posted by Stück

Unless you've already exceeded the limitations of premium 91/93 octane knock resistance there is no reason to run ethanol blends.

Please give me an answer not your opinion. Thank you

[$howtime456]

Originally Posted by Lowkey F10

Please give me an answer not your opinion. Thank you

that is the answer bro. I would also change the tune on that 550. So many better options.

[Hilly]

Originally Posted by Lowkey F10

Before I owned my 550i I had a 370z so excuse me if this is a stupid question. I want to run E85 or E54 in my 550i but I’m not sure if I would need anything upgraded or some sort of tune to run ethanol? I have the VRTune by Vivid Racing

JB4 Beta tune allows you to mix in E85.

[Lowkey F10]

Originally Posted by Hilly

JB4 Beta tune allows you to mix in E85.

So only if I have the jb4 beta I’ll be able to run e85 with stock fuel injectors, etc?

[Stück]

Originally Posted by $howtime456

that is the answer bro. I would also change the tune on that 550. So many better options.

Bro, like give him a answer not your damn opinion

[Hilly]

Originally Posted by Lowkey F10

So only if I have the jb4 beta I’ll be able to run e85 with stock fuel injectors, etc?

Yes...I am currently running e85/91 mix...refer to this website

http://www.n54tech.com/forums/showthread.php?t=40626

[535_BiTurbo]

Originally Posted by Lowkey F10

Before I owned my 550i I had a 370z so excuse me if this is a stupid question. I want to run E85 or E54 in my 550i but I’m not sure if I would need anything upgraded or some sort of tune to run ethanol? I have the VRTune by Vivid Racing

Stock with no tune you can run up to 25% so E25

I think you're better off with 1/2 tank of Shell Vpower +nitro 93 and 2 cans of NOS booster

[Lowkey F10]

Originally Posted by Stück

Bro, like give him a answer not your damn opinion

You’re still very irrelevant in this thread. And for some reason I am not surprised.

[Stück]

Your non-tu 550i worried about ethanol is the only irrelevant thing here.

[Lowkey F10]

Originally Posted by Stück

Your non-tu 550i worried about ethanol is the only irrelevant thing here.

Oh lord.. not this argument

Typical. Please cry me a river lmfao.

[AZ-MCRacer]

Ethanol blends are higher octane and definitely make a difference. But for E54 you are burning approx. 20% more fuel so you need to map and have a fuel system capable of delivering that. I am not sure on the 550i, but on the N55 our HPFP's can't deliver enough fuel so supplemental fueling is necessary. Ethanol blends also allow for more timing so you can get more HP at lower boost.

[535_BiTurbo]

Originally Posted by Stück

Your non-tu 550i worried about ethanol is the only irrelevant thing here.

what does TU and Non Tu have to do with anything?

[535_BiTurbo]

Originally Posted by AZ-MCRacer

Ethanol blends are higher octane and definitely make a difference. But for E54 you are burning approx. 20% more fuel so you need to map and have a fuel system capable of delivering that. I am not sure on the 550i, but on the N55 our HPFP's can't deliver enough fuel so supplemental fueling is necessary. Ethanol blends also allow for more timing so you can get more HP at lower boost.

E20 is about the most you'll be able to go on the stock 550i which will be good for cooling/cleaning and timing corrections. I doubt you'd pick up any power. I run E20 in mine, but it runs much better with full 93 and 2 bottles of NOS Booster.