[cesarortiz23]

Is it possible to run full e85 on a f30 335i

Pwg I do a mixture now with 4 gallons and it helps out so much with my timing when ever I don't use e85 my timing is all over the place according to my logs and bm3 support

my question is is it possible to run full e85 and if it is what's the steps or what exactly do I need or is way too much of a hassle

Would I need to replace injectors and lpfp and just do too much to the car to accept e85

Also I'm not going to lie is so much cheaper lol

I live here in la county so man gas prices are always higher here

[e46m3to335i]

You do realize, your gas mileage will take a SERIOUS hit right? So, you'll save money filling up each time but will be filling up more often so it kind of cancels each other out.

You'll need a tune at a minimum (MHD or BM3).MHD offers a full E85 OTS tune already with no upgrades required. I don't believe BM3 has an OTS E85 map available yet.

-Nick

[cesarortiz23]

Originally Posted by e46m3to335i

You do realize, your gas mileage will take a SERIOUS hit right? So, you'll save money filling up each time but will be filling up more often so it kind of cancels each other out.

You'll need a tune at a minimum (MHD or BM3).MHD offers a full E85 OTS tune already with no upgrades required. I don't believe BM3 has an OTS E85 map available yet.

-Nick

wait your telling I won't need a lpfp or anything just a tune ???

Why do people say I need to upgrade lpfp and spark plugs etc.

Right now at the moment I am getting 16.8 mpg

On 4 gallons of e85 and the rest 91

[e46m3to335i]

Originally Posted by cesarortiz23

wait your telling I won't need a lpfp or anything just a tune ???

Why do people say I need to upgrade lpfp and spark plugs etc.

Right now at the moment I am getting 16.8 mpg

On 4 gallons of e85 and the rest 91

All I'm saying is that MHD offers a full E85 OTS tune.

[louielouie]

Originally Posted by cesarortiz23

wait your telling I won't need a lpfp or anything just a tune ???

Why do people say I need to upgrade lpfp and spark plugs etc.

Right now at the moment I am getting 16.8 mpg

On 4 gallons of e85 and the rest 91

You will definitely blow your fuel pumps running full e85 if you don't upgrade them. I'd say you're already testing your luck running 4 gallons. I've spoken to MHD about this too, and they recommend just ~1 gallon on stock FPs. Not sure why others are getting a different answer.

[Phyrexia]

This thread is confusing. I just put 300 miles on a tank of E30 (4.25 gallons E85 + Shell 93) running the v1.08 Stage 2+ E20 tune. Was that a no-no? The car ran great and my logs look good. I flashed back to the 93 octane tune this afternoon.

I thought the E85 tune was not for stock fuel systems. MHD app and website are unclear.

[Munchi435i]

Originally Posted by Phyrexia

This thread is confusing. I just put 300 miles on a tank of E30 (4.25 gallons E85 + Shell 93) running the v1.08 Stage 2+ E20 tune. Was that a no-no? The car ran great and my logs look good. I flashed back to the 93 octane tune this afternoon.

I thought the E85 tune was not for stock fuel systems. MHD app and website are unclear.

Not sure whats confusing about the MHD app and website.

You can run the Full 85 tune with stock fueling OR the E20-E30 maps (depending if you are EWG or PWG) with stock fueling.

If your map is set for E20 and you run E40, then your Fueling system will eventually not keep up. There is a reason why the OTS maps are set to a certain E20-E30 limit and you shouldn't go past that!

[ronanz]

Originally Posted by e46m3to335i

You do realize, your gas mileage will take a SERIOUS hit right? So, you'll save money filling up each time but will be filling up more often so it kind of cancels each other out.

You'll need a tune at a minimum (MHD or BM3).MHD offers a full E85 OTS tune already with no upgrades required. I don't believe BM3 has an OTS E85 map available yet.

-Nick

bm3 offers 100octane and e30 maps

.

[ronanz]

Originally Posted by Munchi435i

Not sure whats confusing about the MHD app and website.

You can run the Full 85 tune with stock fueling OR the E20-E30 maps (depending if you are EWG or PWG) with stock fueling.

If your map is set for E20 and you run E40, then your Fueling system will eventually not keep up. There is a reason why the OTS maps are set to a certain E20-E30 limit and you shouldn't go past that!

This ^^^

The HPFP is the weak link in your fuel system


.

[rcsup1]

I'm running 8 gal E85 with 93, so about E50. At first it was by accident (I wasn't paying attention). I ran some logs and everything looked great so I've kept it in that range. The main issue as has been stated here is that HPFP can't flow enough for full E85 and crash's sending the car into limp mode.

My thread and logs here:

https://f30.bimmerpost.com/forums/sh....php?t=1641595

My car is a PWG so the turbo does't flow as much as the later EWG which would put a bigger strain on the pump.

[Phyrexia]

The License Store says "E85 mix map" and the description says "E30 Map". So I filled up my car with an E30 mix, bought the maps, go to flash, and saw that I only have E20 maps and E85 maps available. Meanwhile the MHD Website advertises only an E25 map pack for F-series N55.

Haven't seen any indication that the E85 map was for stock fuel systems until today, in this thread. No documentation on MHD's part at all. :shrug:

Originally Posted by Munchi435i

Not sure whats confusing about the MHD app and website.

You can run the Full 85 tune with stock fueling OR the E20-E30 maps (depending if you are EWG or PWG) with stock fueling.

If your map is set for E20 and you run E40, then your Fueling system will eventually not keep up. There is a reason why the OTS maps are set to a certain E20-E30 limit and you shouldn't go past that!

[MineralF30]

Originally Posted by cesarortiz23

Is it possible to run full e85 on a f30 335i

Pwg I do a mixture now with 4 gallons and it helps out so much with my timing when ever I don't use e85 my timing is all over the place according to my logs and bm3 support

my question is is it possible to run full e85 and if it is what's the steps or what exactly do I need or is way too much of a hassle

Would I need to replace injectors and lpfp and just do too much to the car to accept e85

Also I'm not going to lie is so much cheaper lol

I live here in la county so man gas prices are always higher here

You can run full e85 but i'd definitely upgrade the lpfp to a walbro, it will flow much better as it is meant to handle full e85. I haven't tried out the full e85 maps on MHD so cant speak on that but i run e85 on my custom tune with port injection and i love it.

Your gas mileage will be horrible though, i get around 14-16 mpg and have to fill up about every 2 days but then again i drive about 70-80 miles per day so your results might be different.

[e46m3to335i]

Originally Posted by ronanz

bm3 offers 100octane and e30 maps

.

I'm well aware of what BM3 offers OTS wise. Was just saying to the OP that I'm pretty sure BM3 doesn't offer a "full E85" flash like MHD does.

[JaredG_F30]

Are there really people out there running the MHD full E85 tune with no supporting fueling upgrades, i.e. upgraded LPFP with PI or upgraded HPFP?

Originally Posted by e46m3to335i

I'm well aware of what BM3 offers OTS wise. Was just saying to the OP that I'm pretty sure BM3 doesn't offer a "full E85" flash like MHD does.

[e46m3to335i]

Originally Posted by JaredG_F30

Are there really people out there running the MHD full E85 tune with no supporting fueling upgrades, i.e. upgraded LPFP with PI or upgraded HPFP?

Not sure but I really doubt it. I wouldn't LOL.

[zole2112]

Originally Posted by JaredG_F30

Are there really people out there running the MHD full E85 tune with no supporting fueling upgrades, i.e. upgraded LPFP with PI or upgraded HPFP?

There is no way with stock LPFP and stock HPFP. Maybe the LPFP can handle full e85 but the HPFP surely cannot.

I've been running e50 for the last year+ with both stock LPFP/stock HPFP with no issues and with Stage 2 LPFP (walbro 450)/stock HPFP with no issues, all logs have looked good.

[adrien78]

Originally Posted by JaredG_F30

Are there really people out there running the MHD full E85 tune with no supporting fueling upgrades, i.e. upgraded LPFP with PI or upgraded HPFP?

I am, but the full E85 in only available for N55 EWG if I'm right.
I was a beta tester for this map. Stg1 should be ok without any problem but for stg2 it's not the same.
They released a map too hard for the HPFP, I have some pressure drops after 5000rpm, corrected by lowering the boost.
I'm running like 12,5-13psi at this time, curves are ok, no drops.

Running full e85 since 3 months, my HPFP is still alive lol.

[zole2112]

Originally Posted by adrien78

I am, but the full E85 in only available for N55 EWG if I'm right.
I was a beta tester for this map. Stg1 should be ok without any problem but for stg2 it's not the same.
They released a map too hard for the HPFP, I have some pressure drops after 5000rpm, corrected by lowering the boost.
I'm running like 12,5-13psi at this time, curves are ok, no drops.

Running full e85 since 3 months, my HPFP is still alive lol.

I stand corrected you can tune to account for e85 by limiting your boost levels so that your fuel demand volume doesn't exceed your HPFP capability.

[adrien78]

Originally Posted by zole2112

I stand corrected you can tune to account for e85 by limiting your boost levels so that your fuel demand volume doesn't exceed your HPFP capability.

Pureboost did it. I just give them some feedback and logs and they sent me other maps.

[rcsup1]

What gains are you guys running full E85 with the lower boost pressures seeing?

Does the increased timing really offset the reduced boost pressure in terms of overall power?

[Munchi435i]

Originally Posted by rcsup1

I'm running 8 gal E85 with 93, so about E50. At first it was by accident (I wasn't paying attention). I ran some logs and everything looked great so I've kept it in that range. The main issue as has been stated here is that HPFP can't flow enough for full E85 and crash's sending the car into limp mode.

My thread and logs here:

https://f30.bimmerpost.com/forums/sh....php?t=1641595

My car is a PWG so the turbo does't flow as much as the later EWG which would put a bigger strain on the pump.

From all the research i've read, it seems the PWG turbo cars are able to run much higher levels of E85(E30-E50). So it's no surprise that your able to run E50 with no issues but the question is, how long will that last before having to upgrade any part of the fueling system??

Originally Posted by Phyrexia

The License Store says "E85 mix map" and the description says "E30 Map". So I filled up my car with an E30 mix, bought the maps, go to flash, and saw that I only have E20 maps and E85 maps available. Meanwhile the MHD Website advertises only an E25 map pack for F-series N55.

Haven't seen any indication that the E85 map was for stock fuel systems until today, in this thread. No documentation on MHD's part at all. :shrug:

If you are EWG, then the only maps available to you are the E20 and full E85.

Im not sure what is available for the PWG turbo cars since i run a EWG turbo.


Also, I have not purchased the E85 mix maps so im not sure about the description your talking about but from everything i've read on the forums, you can run full E85 on stock fueling, at the sacrifice of lower boost.

[JaredG_F30]

So is the Full E85 map faster than the Stage2+ E30 or 93 octane maps? I'd love to see a log if you have one.

Originally Posted by adrien78

I am, but the full E85 in only available for N55 EWG if I'm right.
I was a beta tester for this map. Stg1 should be ok without any problem but for stg2 it's not the same.
They released a map too hard for the HPFP, I have some pressure drops after 5000rpm, corrected by lowering the boost.
I'm running like 12,5-13psi at this time, curves are ok, no drops.

Running full e85 since 3 months, my HPFP is still alive lol.