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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Australia > Time to go to the next level 100% E85



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      04-11-2018, 06:39 AM   #1
Red335iE92
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Time to go to the next level 100% E85

Hey guys need some advice.

Iím currently fbo running MHD stage 2+ E40 mix and Iím now at the turning point of whatís next.

Iíve been in talks with with a couple of workshops and have decided which one Iím going to go with.

Question is who is running 100% E85 and what supporting mods have you done.

Iím going to stay in stock turbos for the interim until I decide what avenue i am going to go.

Also who has had a custom mhd flash done here in Australia on a dyno?

TIA
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      04-11-2018, 06:40 AM   #2
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Quote:
Originally Posted by Red335iE92 View Post
Hey guys need some advice.

I’m currently fbo running MHD stage 2+ E40 mix and I’m now at the turning point of what’s next.

I’ve been in talks with with a couple of workshops and have decided which one I’m going to go with.

Question is who is running 100% E85 and what supporting mods have you done.

I’m going to stay in stock turbos for the interim until I decide what avenue i am going to go.

Also who has had a custom mhd flash done here in Australia on a dyno?

TIA
As far as I know you will need a stage 3 LPFP and port injection to run 100% E85
Probably a bit of an overkill for stock turbos
Im also running a custom MHD flash tuned on a dyno
Seeing you are in Melb get in touch with T1M here on the forum
He is a gun local Melb tuner for the N54 platform
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      04-11-2018, 06:46 AM   #3
Red335iE92
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Located in Brisbane unfortunately.

This is the first n54 these guys will be playing with however they are well known around the area for producing some reliable and extremely high powered cars.

Just so much conflicting information regarding what to do with these 😂😂😂
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      04-11-2018, 06:51 AM   #4
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You can run e85 on an inline 255 or single 455 pump on stock turbos.

E tuners from the us prefer to log and tune on the road as it has real load.

You will max the turbos out on e60 octane. The only positive of going e85 is for convienience. And slightly more cooling maybe.

Not sure what workshops your talking to but theres a handfull of US tuners that are very experienced and should be your first choice.
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      04-11-2018, 06:55 AM   #5
Red335iE92
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Originally Posted by Brule View Post
You can run e85 on an inline 255 or single 455 pump on stock turbos.

E tuners from the us prefer to log and tune on the road as it has real load.

You will max the turbos out on e60 octane. The only positive of going e85 is for convienience. And slightly more cooling maybe.

Not sure what workshops your talking to but theres a handfull of US tuners that are very experienced and should be your first choice.
Cheers mate. That was the purpose of the full e85.

For those running e60 what is the litres for E85/98.

Whoís recommended re US tuners. I know of wedge but happy to hear of others

Sorry for all the questions this is new thing for me.
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      04-11-2018, 06:57 AM   #6
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Quote:
Originally Posted by Red335iE92 View Post
Located in Brisbane unfortunately.

This is the first n54 these guys will be playing with however they are well known around the area for producing some reliable and extremely high powered cars.

Just so much conflicting information regarding what to do with these ������
Oh that's a red flag right there then bro. If they are not familiar with the N54 you are def taking a risk... You know the old saying, "Pioneers take the arrows, settlers take the land"

I can vouch from personal experience, that this is true when a workshop is learning on your car as a new platform for them. Not to say they are not competent or that they wont do a good job, just that the N54 is no ford, especially when it comes to electronics, safeguards and tuning.

101Duck (here in the forum) is located in Bris and does awesome work with single turbo conversions and stuff. Might pay you to contact him and have a chat before you make up your mind.. just saying
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      04-11-2018, 07:00 AM   #7
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Quote:
Originally Posted by Brule View Post
You can run e85 on an inline 255 or single 455 pump on stock turbos.

E tuners from the us prefer to log and tune on the road as it has real load.

You will max the turbos out on e60 octane. The only positive of going e85 is for convienience. And slightly more cooling maybe.

Not sure what workshops your talking to but theres a handfull of US tuners that are very experienced and should be your first choice.
Prob better we hook red up with a good local workshop hey Brule.
Remote tunes are a PINTA unless you have no choice.
Motiv is probably a good USA tuner but I found wedge and motiv very slow
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      04-11-2018, 07:41 AM   #8
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Quote:
Originally Posted by Red335iE92 View Post
Located in Brisbane unfortunately.

This is the first n54 these guys will be playing with however they are well known around the area for producing some reliable and extremely high powered cars.

Just so much conflicting information regarding what to do with these 😂😂😂
Get in touch with Dan (Duck) at Simply Tuning at Brendale
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      04-11-2018, 06:45 PM   #9
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IMO on oem you're kinda wasting your $ to go PI and 100% E85, as brule stated it becomes a law of diminishing returns above E60 on stock turbos. (on upgraded turbos that's different as they flow a lot more up top)

So it might cost you $3k and you'll gain 5-10kw, and you may also start experiencing long cranks & lumpy cold starts on E85.

I like E30-E50 ratios as you still maintain the best of both worlds (higher octane better cooling of E85 but also decent fuel economy, lubricity of the 98 for your fuel pump etc)

I downloaded an app on google play for like $2 called E85 mix calculator its a very handy app that lets you type in E content of say 98 (usa have some ethanol in their 'premium') and E content of the E85 (my mate uses the same bowser as me and he has a E analyzer) then of course it spits out the correct ratio for you to fill up. I find that my fuel needle is very accurate and never have issues filling her just under full
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      04-11-2018, 07:13 PM   #10
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Here are some US based Tuners:
Twisted Tuning
Jake@MOTIV
V8bait
WedgePerformance

And if you're using JB4:
France: trebila
trebila
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      04-11-2018, 08:50 PM   #11
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IMO, the ONLY advantage of 100% E85 over E30-E40 is fill-up convenience.

The rest are disadvantages such as:

- Higher fuel consumption
- More oil dilution needing more frequent changes.
- Possible cylinder bore erosion if left for long periods of time after driving the car without fully warming it up.
- PI needed when it otherwise wouldn't be and all the dramas with that.


The great thing about our modern small bore, high comp DI engines is that they need very little timing to make MBT torque compared to other engines. If you're running 18-20psi with 10 degrees midrange and 14 degrees up top which is very easily possible with E40, you're very likely to be at MBT already and there are no gains in pushing timing past that. The ideal ethanol mix for any given setup is the least amount possible that can get you to MBT timing. Any more is a disadvantage.

IMO, the best setup for N54 without unnecessary dramas is to max a new HPFP with the inlet strainer removed with upgraded turbos on E15. Even the jump from 0 to 15% ethanol does wonders. This setup can be really, really fast without all the cafuffle of supplementary fuel. E15 only requires 5% more fuel flow over just petrol but you can get away with running a bit leaner so really it's only like 2-3%.

I totally get the fill-up convenience thing though

Last edited by bradsm87; 04-12-2018 at 09:08 PM.
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      04-13-2018, 07:05 AM   #12
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Fuck yeah brad.
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      04-15-2018, 07:55 AM   #13
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Im happy to custom tune in brisbane.

Single intank 450 will make it to 550rwhp or there abouts on full e85 with PI. Twin pumps is a overkill for 90% of people here.

If you have a stock car. Then e85 and pi is useless. But if you go "fbo" then i don't see the issue. These engines were designed to run 6-10psi. 10.2:1 comp DI or not is too much for big boost on our crappy 98ron.

If you do cooler. Inlets. Outlets. Charge pipe. Walbro450. Pi. N20 tmap. Then e85 is well worth it.

The oil dilution on 85 is no worse than pump. You can just see it easier..

As for road loading cars up more than dyno is horse poop. I haven't found a road yet that can out load my 15 year old DD.
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      04-15-2018, 10:33 PM   #14
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If convenience is an issue why not flex fuel? You can run full E85 or blend 98 and DME will auto adjust maps for you with MHD.

https://www.motivmotorsport.com/prod...el-for-mhd-bmw
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      04-16-2018, 04:49 AM   #15
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Quote:
Originally Posted by BM335M View Post
If convenience is an issue why not flex fuel? You can run full E85 or blend 98 and DME will auto adjust maps for you with MHD.

https://www.motivmotorsport.com/prod...el-for-mhd-bmw
I haven't received mine yet for testing, only part im concerned about is, the DME doesn't control the PI, and I don't think the flex module has the option to turn the PI off? So what happens then? still spraying PI on pump fuel when it's not needed? I have't had a chance to play with it yet, but seems like an interesting obstacle.
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