what do I need to run E85 - N54Tech.com

boostedbrisbane · **what do I need to run E85 -** 05-30-2014, 06:23 PM

I have a 2013 135i M Sport Vert with N55. I am running JB4, ***, intake, and FMIC. I want to be able to run E85. What do I need to be able to run 100% E85 or do I have to mix? Is there anything required to run it? Different tune etc?

Aussieboxy · 06-01-2014, 01:26 AM

I do a 60(90)/40(E85) mix with 98 Ron which seems to work well.

boostedbrisbane · 06-01-2014, 03:56 PM

Quote:

Originally Posted by Aussieboxy

I do a 60(90)/40(E85) mix with 98 Ron which seems to work well.

Are you running a different fuel pump or flex fuel wires?

Aussieboxy · 06-01-2014, 04:38 PM

All stock

Newguy123 · 06-03-2014, 01:30 PM

Have you done any data logs? I hear you will run lean with added boost!

Mortify · 06-06-2014, 04:53 PM

You need flex fuel wires for n55

vietkidd91 · 06-08-2014, 07:30 AM

how about for n54? do u need any kind of modifications to run e85?

Mortify · 08:48 AM

You need a jb4 g4 at least. G5 ISO is the only tune supported now. Map 5 for autotune and work your way up on e85.

I started with 20% but my LPFP could not handle more than 40%. You can tell by logging if your LPFP dropped below 9 then you are demanding too much from it. But I've seen some cars handle 50-60% e85 stock, in rare cases. Right now I run 4 gallons of e85 and fill up on 92 Oct.