[AmooManiak]

Over the last week I've been working with Cary Jordan flashing and fine tuning his E85 tune via Bootmod3.

Big thanks to Mike at Extreme Power House and Cary for answering all the questions so quickly. This process was totally new to me, but it's been fairly simple using the BM3 adapter to log the data. Biggest problem is finding a road that will allow you to do a full 3rd gear pull without running into someone. I also added the CTS Turbo Intake, which adds a little bit more sound character to the front of the car.

I think we are in the later part of the data logging/revision tuning and the power difference is just incredible. I'm talking about sensations that I have not felt with ICE cars before. I had a modified 2021 M5C, and this thing just pulls much harder from down low all the way through the gears.

Once all is said and done, I will most likely get a dyno done, but I have no reasonn to doubt Dinan's claims that our cars make close to 800hp on E85.

"Only" modifications are XHP Stage 2 tune, CTS Turbo Intakes and E85 Stage 1 tune by Cary Jordan.

[yugrac]

Which model year?

[AmooManiak]

2020. I think the later ones need DMEs to be shipped to Europe.

[Tenac]

Heck with the research I've seen you don't even need E85 to hit 800hp numbers, just some work on bolt on mods. Though E85 helps a ton, now I wonder what it would do with the typical power mods. Heat exchanger, bigger intercoolers, exhaust, intake and pure 900's.

[yugrac]

Originally Posted by AmooManiak

2020. I think the later ones need DMEs to be shipped to Europe.

Yeah. I was hoping I had missed that the '21+ ECU had been cracked without needing a bench flash. No way I'm pulling it out of the car and sending it to Europe!

[RJC-1]

We may be getting a place in Cali and the 91 octane there isn’t the best (we have93 here), are you guys mixing 91 with e85? I’m hearing from the bmw dealer out there e85 is a bit corrosive and to be careful mixing/using it.

[AmooManiak]

Originally Posted by Tenac

Heck with the research I've seen you don't even need E85 to hit 800hp numbers, just some work on bolt on mods. Though E85 helps a ton, now I wonder what it would do with the typical power mods. Heat exchanger, bigger intercoolers, exhaust, intake and pure 900's.

Apparently our fuel pumps are good enough to handle it without any modifications.

Also, E85 will make a lot more power than a Stage 2 93. I was trying to avoid having to change hardware.

[AmooManiak]

Originally Posted by RJC-1

We may be getting a place in Cali and the 91 octane there isn’t the best (we have93 here), are you guys mixing 91 with e85? I’m hearing from the bmw dealer out there e85 is a bit corrosive and to be careful mixing/using it.

Not mixing, this is a straight E85. Cary has tuned thousands of cars so I would think the research has already been done before rolling the tunes out.

It is recomended to run a gas of 93 once every 3k miles or 3 months in between. Thankfully this is an easy process with BM3.

[RJC-1]

Originally Posted by AmooManiak

Not mixing, this is a straight E85. Cary has tuned thousands of cars so I would think the research has already been done before rolling the tunes out.

It is recomended to run a gas of 93 once every 3k miles or 3 months in between. Thankfully this is an easy process with BM3.

I’ve heard mixing three gallons of E85 to ~12 gallons of 91 boosts it to ~93. This might be helpful for those without the tune etc. who want a bit more punch stock where there’s no 93.

[Tenac]

Originally Posted by RJC-1

I’ve heard mixing three gallons of E85 to ~12 gallons of 91 boosts it to ~93. This might be helpful for those without the tune etc. who want a bit more punch stock where there’s no 93.

I do this but with 100octane with 91 to get about 93-94ish. that is what the OEM tune makes its most power. Not a bad way to improve performance by doing very little. But 100 is about 10 bucks a gallon and I need 4. lol

[RJC-1]

Originally Posted by Tenac

I do this but with 100octane with 91 to get about 93-94ish. that is what the OEM tune makes its most power. Not a bad way to improve performance by doing very little. But 100 is about 10 bucks a gallon and I need 4. lol

We're spoiled here in FL with 93 and the M850 rips with it. My wife keeps asking me why I'm not 100% thrilled with getting a place in N Cali, when I explain the gasoline essentially sux there, she just rolls her eyes...she just doesn't understand lol

Wow $10.00 per gallon for 100 is quite steep. I see you're in AZ is it readily available there? You might want to try the blend with the 85 trick and the dealer in CA said it shouldn't do any harm if the ratio stays at/below 3 gallons of E85 per fill up.

Does anyone use octane booster, and does BMW permit it? I used to run it in my boosted 930 turbo's and it turned the inside of my exhaust's orange, but the cars ran great on it/no pinging even at 1.5 bar of boost.

[ruderegime]

Are you on a certain e tune? Like does your tuner now the E85%? Do you have a E85 gauge installed?

[RJC-1]

Originally Posted by ruderegime

Are you on a certain e tune? Like does your tuner now the E85%? Do you have a E85 gauge installed?

If one runs a 30/70 E85/91 blend, would a gauge be needed/helpful, and if so why?

[Tenac]

Originally Posted by RJC-1

We're spoiled here in FL with 93 and the M850 rips with it. My wife keeps asking me why I'm not 100% thrilled with getting a place in N Cali, when I explain the gasoline essentially sux there, she just rolls her eyes...she just doesn't understand lol

Wow $10.00 per gallon for 100 is quite steep. I see you're in AZ is it readily available there? You might want to try the blend with the 85 trick and the dealer in CA said it shouldn't do any harm if the ratio stays at/below 3 gallons of E85 per fill up.

Does anyone use octane booster, and does BMW permit it? I used to run it in my boosted 930 turbo's and it turned the inside of my exhaust's orange, but the cars ran great on it/no pinging even at 1.5 bar of boost.

That's down side we have more 100octane pumps than E85 here. lol I'm working with a guy to potentially do home fill ups, that might make things a bit more interesting.

[RJC-1]

Originally Posted by Tenac

That's down side we have more 100octane pumps than E85 here. lol I'm working with a guy to potentially do home fill ups, that might make things a bit more interesting.

What about buying/using octane booster? I used to use 104+ in the black bottle back in the day, but this (below) is interesting, and it comes up to 5 gallon units.

https://boostane.com/products/boosta...hoCrKkQAvD_BwE

[Tenac]

Originally Posted by RJC-1

What about buying/using octane booster? I used to use 104+ in the black bottle back in the day, but this (below) is interesting, and it comes up to 5 gallon units.

https://boostane.com/products/boosta...hoCrKkQAvD_BwE

Yeah not a terrible option bc you would need about 1.6oz to hit 100octane... I also thought going meth injection, the systems now adays have tune fail safes and junk so it just detunes if you run low or pump fails. Also cheaper. Just need to think about the best route for sure. I mean 5gals at 400 bucks in the long run is cheaper but basically on par with Meth as well. So many options so little ability to TUNE this damn things. lol

How ever though Meth keeps valves looking new on this direct injection engines.

[RJC-1]

Originally Posted by Tenac

Yeah not a terrible option bc you would need about 1.6oz to hit 100octane... I also thought going meth injection, the systems now adays have tune fail safes and junk so it just detunes if you run low or pump fails. Also cheaper. Just need to think about the best route for sure. I mean 5gals at 400 bucks in the long run is cheaper but basically on par with Meth as well. So many options so little ability to TUNE this damn things. lol

How ever though Meth keeps valves looking new on this direct injection engines.

I didn't think a traditionally placed direct injector was able to clean both intake and exhaust but only one (believe it's intake). I admire Lexus' design where they have two per cylinder.

[Tenac]

Originally Posted by RJC-1

I didn't think a traditionally placed direct injector was able to clean both intake and exhaust but only one (believe it's intake). I admire Lexus' design where they have two per cylinder.

Yeah intake only for sure, but exhaust never get nearly as bad as the intake does on these DI's.

[AmooManiak]

Originally Posted by ruderegime

Are you on a certain e tune? Like does your tuner now the E85%? Do you have a E85 gauge installed?

Yes, you can just get the Ethenol tester from Amazon for $13 and test the % at the gas station where you fill up. Takes 5 minutes.

[Draxxas]

Originally Posted by AmooManiak

Yes, you can just get the Ethenol tester from Amazon for $13 and test the % at the gas station where you fill up. Takes 5 minutes.

I run a E30 blend on a stage 2 custom tune done at Performance Eurowerks in Chicago.
I have 0 experience with this BMW but fur I e , I was told the fuel system is only safe to E40 but it's being pushed at that point. There's no way it can handle straight E85 but even if it could, E30 gets you to pretty much max of what this engine can reliably handle. E85 I think your asking loudly for the rods to part ways with your bottom end saying it lightly 😅😊

My car makes around 700whp on E30 680# torque

[AmooManiak]

I know about Performance Eurowerks. They are only 15 minutes from me. At the end of the day, I felt more comfortable going with a BMW specific tuner who has tuned thousands of cars across the U.S. with many members to back up the reliability. I'm pretty sure they know what they're doing given that they were the first ones to come out with the E85 tune for our platform (even before Dinan.) Also, I felt much better having the ability to log the data and send it to the tuner at any point if an issue would arise to troubleshoot as opposed to having the car towed to the tuner in case something came up.

The thing you really should be worried about is if the tuner does not have safeguards in place to protect the engine.

https://www.jordan-tuned.com/

Would be nice to hit the track at some point in the spring and do a comparison between the tunes.

[Draxxas]

I don't understand part of your reply. Alex does work off datalogs so he does the same as most tuners. Alex expertise is BMWs as he's contracted by race teams and goes to the events to keep cars running in top form.
Safeguards are handled by torque limiters in which case tunes are set up accordingly.
We can definitely meet at US131 and line up. You can also look at dragy app and search M850i and there's 2 spots im not #1.
0-60 mine is 2.79 on all season tires #1 is 2.76 🙈
Changing tires Tuesday 😁
When will you have tune completed?