e30 mixture help!!!

[Mracer88]

i have downloaded the stage 2 tune running an e30 mix. cn anyone help with re-fuel tips. for example, if i have a half tank of e30, but want to top off, whats the calculation for the mix? Any help would be much appreciated. my only is drain it to empty, fill it with 3.4 e85, and top off with 91..

[HyeM3]

https://apps.apple.com/us/app/e85cal/id1470313135 If you have an iPhone download this app. Tell it your current E mixture, Target E mixture, tank size and the percentage of gas left in the tank and it'll do all the math for you

[mike@x-ph.com]

I use this website
http://www.georgebelton.com/E85Calculator.php

[Lostmfound]

Originally Posted by mike@x-ph.com

I use this website
http://www.georgebelton.com/E85Calculator.php

At 50% tank filled with e30 do you put E or 93 first?

[mike@x-ph.com]

Originally Posted by Lostmfound

At 50% tank filled with e30 do you put E or 93 first?

It does not matter

[nbennettksu]

Drive to empty, 5g e85 and the rest 93. It's like e35 blend but it's good to go. I've ran e40 at the track and had no difficulties. Just do 1/3 e85 and you're fine.

[nbennettksu]

Originally Posted by Lostmfound

At 50% tank filled with e30 do you put E or 93 first?

I do my e first since it's a lesser amount and will be blended better by 93

[blockdoc]

Originally Posted by nbennettksu

I do my e first since it's a lesser amount and will be blended better by 93

If you are running an E tune, I would suggest you spend the time to install an ethanol sensor. Makes life SO much easier. I have a Bluetooth installed on my M4 and I ask a lot of my fuel source. Why guess? If you're gonna spend the time and money for the tune....

[dcpatters]

Originally Posted by blockdoc

If you are running an E tune, I would suggest you spend the time to install an ethanol sensor. Makes life SO much easier. I have a Bluetooth installed on my M4 and I ask a lot of my fuel source. Why guess? If you're gonna spend the time and money for the tune....

How is the install on these? Laborious?

[Commanderwiggin]

I use the http://www.georgebelton.com/E85Calculator.php website as well when I want to estimate a specific ethanol content. I'm usually close but I can tell you over time you will get the content quite off without a flex fuel sensor. Luckily I have one of those so I don't care. OP in all honesty if you're messing around with ethanol, get yourself an ethanol sensor asap.

[nbennettksu]

Originally Posted by blockdoc

If you are running an E tune, I would suggest you spend the time to install an ethanol sensor. Makes life SO much easier. I have a Bluetooth installed on my M4 and I ask a lot of my fuel source. Why guess? If you're gonna spend the time and money for the tune....

Fuel it?

[blockdoc]

Originally Posted by nbennettksu

Fuel it?

That's what I have but there are cheaper alternatives

[blockdoc]

Originally Posted by dcpatters

How is the install on these? Laborious?

The fuel it version I have takes a few hours since you have to pull off the IC, throttle body and intake to make the connection at the HPFP by the rails.

I wrote this up about a year ago


https://www.bimmerpost.com/forums/sh...php?p=24920156