Skynet EFI

[Cooter]

I got to thinking…

I'm learning all I can about the Buell DDFI system and I keep banging my head against a wall because it's pretty old tech. It was designed way before the first batch of '03 bikes so it's already antiquated in computer time.

The hardware is all off the shelf stuff that wasn't built by Buell and it will be fine. The key is the ECM.

I'd love to try an aftermarket ECM (Like a FAST, Motec, Holley). Since they are over a decade newer they are a MUCH better/faster CPU and even self-learning (like the Terminator!). It can use several O2 (wideband) inputs, as well as run a Mass airflow meter instead of speed/density (if thats possible on a V-twin with the intake pulses?).

It should learn and adjust way faster and to a greater degree. Meaning only one computer, more power, better emissions, and you can make almost mods you want with NO re-programming.

The only re-wiring would be to pin-out the ECM plug.

Or 'am I high Clairee?'

 

[mrlogix]

your still running an ECM. I thought all of us was running the DDFI-3 app on our andriods. LOL

Skynet, you watch way too many movies Cooter.

 

[Theycallmecrash]

Mega squirt

 

[ich]

Geht nicht. Zündimpuls fehlt. Firmware unterstützt keinen Nockenwellensensor.

 

[mrlogix]

ich- the mega squirt won't work? Bosch Motronic? It has camshaft sensor input doesn't it? I thought my 944 had a camshaft sensor and was running a Motronic.

 

[Cooter]

Sure, you're still using an ECM:black_eyed:. But it's one that can make faster, bigger changes. That is a good point though, could you just hardwire a tablet to the stock ECM that had a control system installed of your choice? Can you run a 'live' (non-DDFI-3) program through the data port? If you can, it seems like it would be much cheaper and give you limitless options for control.

Do you really need a camshaft sensor input on a non-VVT? Otherwise isn't the crank sensor giving the same info (at exactly twice the speed)? Is chain slack/stretch that big a difference?

 

[djs2k2]

Hey give me a minute to study, "I'll be back"!

 

[ReadyXB]

...
I'd love to try an aftermarket ECM (Like a FAST, Motec, Holley). Since they are over a decade newer they are a MUCH better/faster CPU and even self-learning (like the Terminator!). It can use several O2 (wideband) inputs, as well as run a Mass airflow meter instead of speed/density (if thats possible on a V-twin with the intake pulses?).

It should learn and adjust way faster and to a greater degree. Meaning only one computer, more power, better emissions, and you can make almost mods you want with NO re-programming
...

The route I took was to build a run-time analyzer that updates the rear fuel map based on o2 sensor input as you drive. I used an Arduino uno. Everything was done over the data link connector. It currently supports DDFI-3 only, and only one eeprom layout at a time. I also wrote code to data log in Tunerpro .xdl format to a SDHC card on a shield, along with some unique functions I had to reverse-engineer the format (most of it - there are still bits that are incomplete but don't seem to matter for generating spreadsheets for MLV). There wasn't enough ram or rom space to save to a csv directly. The datalogging code actually took longer to write and debug than the dynamic map adjustment code. The two functions are currently mutually exclusive due to lack of RAM on the uno. This was all for proof of concept, for myself.

The first few revs were taped all over the place. Got a few stares at stop lights.

For the later revisions, I got fancy and secured it in a cardboard box and stuffed it in the left-side scoop. It was the perfect holder!

I wanted to offer both the data logger and map updater as products for sale, but as with the other 10+ projects I have going on, the inability to professionally package the product has them all on hold. Fun stuff, though.

 

[Phelan]

03-07 Buells use a cam sensor; 08-up use a crank sensor. Personally, I think the easier change would be to use an XR1200 ECM and wiring to convert an 08-10 XB to HD's Delphi EFI, which is modestly more advanced, but far better supported via aftermarket, and you could utililize devices with auto-tune features, such as Dynojet's Powervision, for tuning. My way is a lot cheaper and simpler though. For my 06 Uly, I have a Winbook TW700 Windows 7" tablet running Windows 10 (only 7" tablet with full size USB port) mounted in a RAM mount X Grip, plugged into the diagnostics port via ECM Spy cable. I have ECM Spy and MegaLog on it, and TunerPro RT on my laptop, which I will soon put on the tablet. I use the tablet for datalogging and tuning, as well as an extended dash (ECM Spy) that displays head temp, intake air temp, adaptive fuel value, and voltage output.

 

[El_Beardo]

Didn't mean to kickstart a dead thread but I am looking to get into the same boat. I'm interested in a 1275 kit for my 09 XB12R and Hammer Perf. tells me the DDFI is a seriously limiting factor. The HD Delphi is a lot easier to tune and I would like to gauge the reality of swapping that system onto my bike.

 

[HazardousWaste]

This is interesting. I'm in the process of research for my Hammer port job, 1275 cyc, custom cams and higher compression. The tune guy I go to is JT&S Performance out at Sears Point Raceway ( I don't care what they call the track these days ). Jim's # 707/548/7906
They are known all over as some of the best tuners. Jim tells me the Intellegent Design Solutions ECU works fine. But being the odd ball that I am, I'm going to be calling Bazzaz and try and find out if their piggy back system will work on the Buell. The guys I know running these on their import bikes seem to like them. Although I'm not fond of the piggy back type of controllers. My brain can't function with all the wizardry going on in these little boxes. So I'm also curious as to how you guys are progressing on this magic.

 

[HazardousWaste]

Hey Crash
Yes your right, my race car friends love the Megasquirt