N54 Stock DME Flex Fuel
- Thread starter Jake@MHD
- Start date
When will preorders open lol
Awesome! Good work!
Hey guys,
The time has finally come to share some details on my secret N54 project. It's been under development for many months now, and had no shortage of both hardware and software (mainly software View attachment 1608) obstacles to overcome. That said, a major milestone was reached this week so it's time to let you all in! Coming soon to a stock DME near you:
View attachment 1604
Yep, real Flex Fuel. It is a fully implemented flex fuel solution, running on the stock DME! Dial your car in on pump (91-93oct), then E85, set the blending / interpolation curve tables, and be on your way. The benefits here are never having to reflash when changing ethanol blends again (or even worry about mixing the correct blend). Go from straight 93oct to 100% E85 or E98 on the same flash View attachment 1609
This is up and running on a few IJE0S cars now and works flawlessly. There is still some more work to be done, and of course porting to the other ROM types will take a good bit of time. Some hardware details are in need of finalization as well. More to come on those items in the weeks to follow.
Some overall highlights and features of this accomplishment:
- first DME integration with a 3rd party sensor
- first large scale rewrite and modification of DME logic
- direct logging of Ethanol Content % in MHD
- separate blending / interpolation per table grouping
- seamless blending between maps for any ethanol content
I'd also like to give a big thanks to @CKI for his help in testing and flashing my countless revisions at all hours of the day, and also to @Martial@MHD for assembly code and hex conversion help along the way! In case you haven't guessed, this will be a module available in MHD similar to M-Boost.
A thread is worthless without pics, right? This log was taken after a fill-up to a higher E content, and you can see the AFR target rising as E% goes up. 2017 is just getting started, and will definitely be the year of the stock DME
View attachment 1610
View attachment 1603
View attachment 1606
Everything MOTIV does is through MHD. I'm sure it'll be hardware and tuning. The preview screenshots were all MHD. I wish runtime options were leveraged a bit more, to give it that jb4 tweaking feel. We need to clone Chris and Jake Y.
So I just got a pm saying that there's no eta cause it's never happening. Guess that's how the cookie crumbles.
Any more info than that? Who did the PM come from? CKI?
So I just got a pm saying that there's no eta cause it's never happening. Guess that's how the cookie crumbles.
A PM from who? If it wasn't from Martial, Chris, or I it is not to be believed.
There's no set ETA yet as I can only work on this stuff in my free time, and testers aren't just standing by 24/7 to do my bidding. Please keep your misinformation out of the thread.
While I'm here might as well post an update though....I8A0S porting is complete. Working on INA0S now
plan obviously workedWhile I'm here might as well post an update though....I8A0S porting is complete. Working on INA0S now
A PM from who? If it wasn't from Martial, Chris, or I it is not to be believed.
There's no set ETA yet as I can only work on this stuff in my free time, and testers aren't just standing by 24/7 to do my bidding. Please keep your misinformation out of the thread.
While I'm here might as well post an update though....I8A0S porting is complete. Working on INA0S now
I8A0S standing by to do your bidding.
The best part for many people, myself included, is that they have access to ethanol. But sometimes it isn't very close by. Its within reach, but not something they can rely on to have every day. So this saves you from having to ensure your tank is empty or measure properly and flash maps back and forth. Literally as simple as putting ethanol in whenever you happen to have a chance to make it by a pump, and magically you go faster. I'm about 5 miles from a pump and I am way to lazy to flash back and forth or measure anything. So this is perfect for me.
