I don’t see a lot of m2’s on corn

Oeb36 · 07-01-2021, 12:34 AM

Is it because you have to upgrade the pricey high pressure fuel pump ?

Dec540 · 07-01-2021, 12:45 AM

Yep. There are some good upgrades out there though. I've been running full E85 for over a year. There's a HPFP thread in this forum with great info.

neonbrown · 07-03-2021, 01:20 PM

MHD just recently got an update that allows you to run flex fuel.

You'll need an additional sensor, but its a pretty neat feature.

abirmaher · 07-03-2021, 05:36 PM

Quote:

Originally Posted by neonbrown

MHD just recently got an update that allows you to run flex fuel.

You'll need an additional sensor, but its a pretty neat feature.

Bootmod3 just did as well with a sensor needed.

detroitm2 · 07-03-2021, 07:11 PM

Yup. Absolutely need a HPFP. I upgraded to a Nostrum HPFP and a Walbro 485 LPFP.

I run flex fuel with an Ecutek tune.

VisualEcho · 07-03-2021, 07:31 PM

Quote:

Originally Posted by detroitm2

Yup. Absolutely need a HPFP. I upgraded to a Nostrum HPFP and a Walbro 485 LPFP.

I run flex fuel with an Ecutek tune.

What's the reasoning? Cheaper gas and more power? Drawbacks?

detroitm2 · 07-03-2021, 07:52 PM

Quote:

Originally Posted by VisualEcho

Quote:

Originally Posted by detroitm2

Yup. Absolutely need a HPFP. I upgraded to a Nostrum HPFP and a Walbro 485 LPFP.

I run flex fuel with an Ecutek tune.

What's the reasoning? Cheaper gas and more power? Drawbacks?

More power, better cooling. More eco friendly? It's not really much cheaper because you go through a significant amount more fuel on E85 than regular 93 octane fuel.

Downside is availability of E85 and even more frequent trips to the pump. Though I tend to only run it when I'm at the track.

Oeb36 · 07-05-2021, 09:12 AM

Quote:

Originally Posted by detroitm2

Yup. Absolutely need a HPFP. I upgraded to a Nostrum HPFP and a Walbro 485 LPFP.

I run flex fuel with an Ecutek tune.

A few questions

So you to upgrade both fuel pumps? I thought you just had to do the hpfp?

Are you getting the metal / cricket sound with the upgraded hpfp?

And Is it true flex fuel where you can mix 93 and e85 and the ecu adjusts boost and timing ? Or it is where you can switch just maps ?

And what turbo setups is everyone running .

nioh_lbbm2 · 07-05-2021, 11:00 AM

Stock N55 HPFP and turbo are both running near their limits in stock form. Going E85 requires both to be upgraded to really see much benefit so not many make the jump with that major of an upgrade.

S55 on the other hand, tons of M3/M4 folks on E85 making crazy power.

ZM2 · 07-05-2021, 12:22 PM

Quote:

Originally Posted by nioh_lbbm2

Stock N55 HPFP and turbo are both running near their limits in stock form. Going E85 requires both to be upgraded to really see much benefit so not many make the jump with that major of an upgrade.

S55 on the other hand, tons of M3/M4 folks on E85 making crazy power.

You don’t need to upgrade the LPFP unless you’re running full E85, or have a turbo upgrade and are pushing big power:

https://f87.bimmerpost.com/forums/sh....php?t=1774687

OP, an E85 mix also helps keep power levels up on hot summer days, whereas the car will start to pull timing with just 93 octane and high IATs.

detroitm2 · 07-05-2021, 05:45 PM

Quote:

Originally Posted by Oeb36

Quote:

Originally Posted by detroitm2

Yup. Absolutely need a HPFP. I upgraded to a Nostrum HPFP and a Walbro 485 LPFP.

I run flex fuel with an Ecutek tune.

A few questions

So you to upgrade both fuel pumps? I thought you just had to do the hpfp?

Are you getting the metal / cricket sound with the upgraded hpfp?

And Is it true flex fuel where you can mix 93 and e85 and the ecu adjusts boost and timing ? Or it is where you can switch just maps ?

And what turbo setups is everyone running .

Tha LPFP isn't strictly required. Though the oem pump may wear out prematurely running E85. Plus, if you plan to upgrade your turbo, it will be needed. I chose to do mine before hand to future proof.

Yes, it's true flex fuel. I can run any mix of 93 and E85 (or e100) and the ecu automatically adjusts map values.

Oeb36 · 07-06-2021, 12:25 AM

Quote:

Originally Posted by detroitm2

Tha LPFP isn't strictly required. Though the oem pump may wear out prematurely running E85. Plus, if you plan to upgrade your turbo, it will be needed. I chose to do mine before hand to future proof.

Yes, it's true flex fuel. I can run any mix of 93 and E85 (or e100) and the ecu automatically adjusts map values.

Oh that’s awesome that the factory dme can do that . I’m going to do the pure stage 2 . It’s my daily And 475 wheel is plenty for me and keeping it reliable .

Do you or anyone get the hpfp noise ? Or was it corrected via fuel pressure ?

I heard a Friends and it sound to good

AWC-F87 · 07-06-2021, 10:47 PM

I have a custom ECUTEK tuning session on the dyno July 17th.

I have a dorch stage 2 and LPFP and an evolution of speed lpfp controller. You shouldn't run much bigger of a lpfp without that controller. The stock ekp as it's called will eventually overheat.

I also have a PS2 and the Bend calibration ultimate flex fuel kit. I'm installing bosche eu5 direct injectors this weekend and that will pretty much conclude all my power mods.

We will be doing 3 tunes
91oct very very mild tune that is just a safety blanket incase of emergency.

E85 flex fuel track tune. Run any mix of e85 making strong power and track safe to hammer on.

E85 full kill max power tune.

It's been a long road, a ton of money and a lot of hours wrenching by me. But at the end of the day I think it's all worth it. The car is really fast and brings a huge smile to my face

Leetevo · 07-07-2021, 12:12 AM

Quote:

Originally Posted by AWC-F87

I have a custom ECUTEK tuning session on the dyno July 17th.

I have a dorch stage 2 and LPFP and an evolution of speed lpfp controller. You shouldn't run much bigger of a lpfp without that controller. The stock ekp as it's called will eventually overheat.

I also have a PS2 and the Bend calibration ultimate flex fuel kit. I'm installing bosche eu5 direct injectors this weekend and that will pretty much conclude all my power mods.

We will be doing 3 tunes
91oct very very mild tune that is just a safety blanket incase of emergency.

E85 flex fuel track tune. Run any mix of e85 making strong power and track safe to hammer on.

E85 full kill max power tune.

It's been a long road, a ton of money and a lot of hours wrenching by me. But at the end of the day I think it's all worth it. The car is really fast and brings a huge smile to my face

Flex fuel tune is so nice…blends are also all over the place!

AWC-F87 · 07-07-2021, 10:06 AM

Quote:

Originally Posted by Leetevo

Quote:

Originally Posted by AWC-F87

I have a custom ECUTEK tuning session on the dyno July 17th.

I have a dorch stage 2 and LPFP and an evolution of speed lpfp controller. You shouldn't run much bigger of a lpfp without that controller. The stock ekp as it's called will eventually overheat.

I also have a PS2 and the Bend calibration ultimate flex fuel kit. I'm installing bosche eu5 direct injectors this weekend and that will pretty much conclude all my power mods.

We will be doing 3 tunes
91oct very very mild tune that is just a safety blanket incase of emergency.

E85 flex fuel track tune. Run any mix of e85 making strong power and track safe to hammer on.

E85 full kill max power tune.

It's been a long road, a ton of money and a lot of hours wrenching by me. But at the end of the day I think it's all worth it. The car is really fast and brings a huge smile to my face

Flex fuel tune is so nice…blends are also all over the place!

I'm just doing it cause it'll run perfect all the time no matter what mix I put in it.

Oeb36 · 07-07-2021, 09:44 PM

Quote:

Originally Posted by AWC-F87

I have a custom ECUTEK tuning session on the dyno July 17th.

I have a dorch stage 2 and LPFP and an evolution of speed lpfp controller. You shouldn't run much bigger of a lpfp without that controller. The stock ekp as it's called will eventually overheat.

I also have a PS2 and the Bend calibration ultimate flex fuel kit. I'm installing bosche eu5 direct injectors this weekend and that will pretty much conclude all my power mods.

We will be doing 3 tunes
91oct very very mild tune that is just a safety blanket incase of emergency.

E85 flex fuel track tune. Run any mix of e85 making strong power and track safe to hammer on.

E85 full kill max power tune.

It's been a long road, a ton of money and a lot of hours wrenching by me. But at the end of the day I think it's all worth it. The car is really fast and brings a huge smile to my face

Damn , are you on built block ?

In not looking for Crazy power . 475 wheel for a daily and keeping it reliable is the goal . I’ll do pure stage 2 .

AWC-F87 · 07-08-2021, 09:34 AM

No my block is stock. From what I've read it should be fine. Maxxed out this setup is probably only good for 550whp in perfect conditions.
My biggest problem will be keeping it cool on track. I have a CSF oil cooler and Do88 aux radiator.

In the long run I will have the block built and do a bulletproof bottom end along with some mild head work. Then maybe turn it up a little more in the future with a bigger or better turbo like the gama core.

AmuroRay · 07-08-2021, 02:32 PM

I would invest in a good intercooler and a WMI too, those will keep the IATs down when you're planning on maxing out the Turbo.

ZM2 · 07-08-2021, 04:15 PM

Quote:

Originally Posted by AmuroRay

I would invest in a good intercooler and a WMI too, those will keep the IATs down when you're planning on maxing out the Turbo.

The great thing about ethanol is WMI isn’t needed. There’s enough octane in the fuel that even if IATs go north of 125F, you won’t get major power loss.

Not needing to run WMI is one of the reasons I went this path.

AmuroRay · 07-08-2021, 04:20 PM

Quote:

Originally Posted by ZM2

The great thing about ethanol is WMI isn’t needed. There’s enough octane in the fuel that even if IATs go north of 125F, you won’t get major power loss.

Not needing to run WMI is one of the reasons I went this path.

Does the tune already know you're running Ethanol and not back off the targets as a result?

ZM2 · 07-08-2021, 05:39 PM

Quote:

Originally Posted by AmuroRay

Does the tune already know you're running Ethanol and not back off the targets as a result?

Those smarter than me would need to comment, but I believe the DME/tune won’t back down until it “hears” microknocks from the knock sensors (from not enough octane/high IAT’s), and I’ve logged enough to see that E40+ doesn’t pull power with IATs at least up to 140F.

Maybe F87source knows how this works on our cars.

Oeb36 · 07-10-2021, 10:16 PM

True actual flex fuel , where the dme auto adjusts to different rations of pump 93 mixed with e85 and vice versa is a game changer .

I assume the car has to be tuned on the dyno for that?

07-01-2021, 12:34 AM	#1
Oeb36 New Member 8 Rep 24 Posts Drives: Porsche 911 turbo , Macan s Join Date: May 2021 Location: Pa iTrader: (0)	I don’t see a lot of m2’s on corn Is it because you have to upgrade the pricey high pressure fuel pump ?
	Appreciate 0 Tweet Quote

07-01-2021, 12:45 AM	#2
Dec540 Captain 136 Rep 677 Posts Drives: M2 LCI Join Date: Mar 2009 Location: Sunshine Coast, Australia iTrader: (0)	Yep. There are some good upgrades out there though. I've been running full E85 for over a year. There's a HPFP thread in this forum with great info.
	Appreciate 0 Quote

07-03-2021, 01:20 PM	#3
neonbrown Second Lieutenant 275 Rep 218 Posts Drives: 2018 M2 Join Date: Oct 2020 Location: Dallas iTrader: (2)	MHD just recently got an update that allows you to run flex fuel. You'll need an additional sensor, but its a pretty neat feature.
	Appreciate 0 Quote

07-03-2021, 07:11 PM	#5
detroitm2 Colonel 2432 Rep 2,526 Posts Drives: 2018 M2 Join Date: Aug 2018 Location: Michigan iTrader: (2) Garage List 2018 BMW M2 [0.00]	Yup. Absolutely need a HPFP. I upgraded to a Nostrum HPFP and a Walbro 485 LPFP. I run flex fuel with an Ecutek tune. __________________ 2018 M2 - Daily Driver/Track Car Motorcity BMWCCA Member Instagram \| YouTube
	Appreciate 0 Quote

07-05-2021, 11:00 AM	#9
nioh_lbbm2 Lieutenant Colonel 1717 Rep 1,899 Posts Drives: M2 Join Date: Mar 2018 Location: California iTrader: (0)	Stock N55 HPFP and turbo are both running near their limits in stock form. Going E85 requires both to be upgraded to really see much benefit so not many make the jump with that major of an upgrade. S55 on the other hand, tons of M3/M4 folks on E85 making crazy power.
	Appreciate 0 Quote

07-06-2021, 10:47 PM	#13
AWC-F87 Lieutenant 437 Rep 485 Posts Drives: 2018 BMW M2 Join Date: Dec 2019 Location: Thousand Oaks CA iTrader: (1)	I have a custom ECUTEK tuning session on the dyno July 17th. I have a dorch stage 2 and LPFP and an evolution of speed lpfp controller. You shouldn't run much bigger of a lpfp without that controller. The stock ekp as it's called will eventually overheat. I also have a PS2 and the Bend calibration ultimate flex fuel kit. I'm installing bosche eu5 direct injectors this weekend and that will pretty much conclude all my power mods. We will be doing 3 tunes 91oct very very mild tune that is just a safety blanket incase of emergency. E85 flex fuel track tune. Run any mix of e85 making strong power and track safe to hammer on. E85 full kill max power tune. It's been a long road, a ton of money and a lot of hours wrenching by me. But at the end of the day I think it's all worth it. The car is really fast and brings a huge smile to my face
	Appreciate 1 6speed_M24484.50 Quote

07-08-2021, 09:34 AM	#17
AWC-F87 Lieutenant 437 Rep 485 Posts Drives: 2018 BMW M2 Join Date: Dec 2019 Location: Thousand Oaks CA iTrader: (1)	No my block is stock. From what I've read it should be fine. Maxxed out this setup is probably only good for 550whp in perfect conditions. My biggest problem will be keeping it cool on track. I have a CSF oil cooler and Do88 aux radiator. In the long run I will have the block built and do a bulletproof bottom end along with some mild head work. Then maybe turn it up a little more in the future with a bigger or better turbo like the gama core.
	Appreciate 0 Quote

07-08-2021, 02:32 PM	#18
AmuroRay Brigadier General 2317 Rep 4,177 Posts Drives: M235i Join Date: Aug 2019 Location: Florida iTrader: (0)	I would invest in a good intercooler and a WMI too, those will keep the IATs down when you're planning on maxing out the Turbo. __________________ Mods: Yes.
	Appreciate 0 Quote

07-10-2021, 10:16 PM	#22
Oeb36 New Member 8 Rep 24 Posts Drives: Porsche 911 turbo , Macan s Join Date: May 2021 Location: Pa iTrader: (0)	True actual flex fuel , where the dme auto adjusts to different rations of pump 93 mixed with e85 and vice versa is a game changer . I assume the car has to be tuned on the dyno for that?
	Appreciate 0 Quote