EFI your motorcycle

posted Apr 27th 2008 11:27pm by Will O'Brien
filed under: misc hacks, transportation hacks

This one’s In honor of my new project bike. [wildwestsyndey] converted his Suzuki DR 350 from the stock carbs to EFI using the megasquirt EFI controller and a custom machined throttle body. You can find a few pictures of the conversion here. To handle the ever annoying need for a high pressure fuel pump, he adapted an in-tank scooter pump with a machined mini-reservoir to fit in-line with the original tank. For more motorcycle builds, check out the megasquirt success stories forum.

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Comments [12]

Reader Comments

megasquirt rules! i’m working my way up to learning enough to install a system in my buddy’s car (built for drifting) this summer.
mixing microcontrollers, sensors, actuators, and performance engines is excellent

Posted at 1:27 am on Apr 28th, 2008 by dax

Does this mean it will boot OSX?

Posted at 5:28 am on Apr 28th, 2008 by az1324

lol, was about to ask the same thing.

Posted at 9:03 am on Apr 28th, 2008 by KayDat

Last year I converted my International Scout II to EFI using a Megasquirt computer. I’m running a GM throttle body and a Ford external fuel pump. Working good so far. Can’t beat EFI for off-roading.

Posted at 10:14 am on Apr 28th, 2008 by Chad

man, I wish I could have this kind of fun, my vulcan 900 custom is already efi’d from the factory. But I suppose I could jerry rig some sort of a digital handle bar mounted display to show me rpm and speed and oil pressure and all the stuff you normally have in a car.

Posted at 9:14 pm on Apr 28th, 2008 by mike

hey efi you too pal!

Posted at 9:00 am on Apr 29th, 2008 by strider_mt2k

… goddamnit, looks like I’m not the only one to read EFI as “extensible firmware interface” and not “electronic fuel injection”

Posted at 10:21 pm on Apr 29th, 2008 by Dakota

I’d be very interested in hearing what it did for both power and mileage in any vehicle that’s had the conversion done.

Posted at 3:21 am on Apr 30th, 2008 by Mike S

I don’t know why anyone in their right mind would take a Naturally aspirated bike, and convert it to EFI. If your battery dies, you’re F’n stranded. Kickstart + NA = Win.

Posted at 9:57 pm on Apr 30th, 2008 by OmegaForte

@ OmegaForte –> more power, better economy, easier cold start, no re-jetting for altitude or seasonal change, etc. Plus most street bikes sold in the US in the last thirty-ish years and many bigger dual sports rarely have kick starts anyways. So for the majority of bikes on the road no battery == fail anyway. Jump in, EFI is rad.

Posted at 5:44 am on May 2nd, 2008 by Pokey

@pokey — my second bike didn’t come with a kickstart, but that was no problem when the battery died: I bump-started it. Again, not an option with fuel injection.

Anyway, that bike became trash once its computer blew out. Junkyards never seem to yield working computers. I ended up selling it with half the engine and the carbs in a bushel basket. Let’s just say I’m not ever likely to become a big fan of electronics on motorcycles.

Posted at 7:04 pm on May 31st, 2008 by jaded

he, my bike can probably survive a EMP strike.

It just got a battery last month. for fancy brigther turn signals.

Posted at 11:51 pm on Jun 1st, 2008 by g