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Searched a few terms and couldnt find anything so i thought I'd start a thread. So many riders especially in the US have to tune and jet carbs on small engine motorcycles. Since we cant get china bikes with efi why not get efi for china bikes.
I am in no way affiliated with ecotron and actually have no experience with their products tgats why im posting this.
http://www.ecotrons.com/Small_Engine_EFI_PNP_kit.html
Does anyone have any experience with these systems
Great post!
This is fascinating. I just read through their FAQ, and it really opened my eyes. Also provides a lot of context for understanding our current problems with stalling in our JH600s.
I know there are plenty of people who are very good with carbs, and will ask why not leave well enough alone, but, as EcoTron itself notes, for some folks the fun is in the challenge of trying something innovative and fresh.
I do hope we get feedback from people who have tried this. EcoTron does point to this thread at ScootDawg.com.
cheers!
There is at least one CN local vendor sells EFI component to mass market (BtoC), called 光印电子。
their website
http://www.motoefi.com/EFI/
their online store
http://shop36470906.taobao.com
I haven't tried their product on my bike, but they said they are the supplier to Qianjiang.
Euphonius, i have read nearly every post in the scootdawg thread they have come a long way in a short time. I was curious as to how the kits would possibly translate to say the df 250rtb or rtc or any of the china bikes that get ordrred frequently.
And td ref ill look into tgat site thanks
Quote:
Originally Posted by td_ref
Thanks for the links but my computer is out and all i have is my phone which will not translate tge pages and i also do not understand Chinese. So ill have to wait until my cpu is back up to view tgose pages
91 views and no one else has any insight or opinion
Quote:
Originally Posted by mo bobber
Well, the reason why I did not even bother to reply is that I don't believe something like this is "plug-and-play".
As most of the Jialing 600 riders start to understand by now, FI is a very complicated thing, where very small changes in input can result into large complications.
Further, unless they have something magic, the"self learning" thing is not covering the maps, just an increase or decrease in fuel supply as in close-loop running.
Every bike, and perhaps even every individual bike out of a serie, needs a custom map, including a custom spark advance map, specifically for the technical circumstances of that bike.
IMO, standard EFI equipment, with a standard map and a closed loop circuit, will not run, will run very bad, or will in the best of cases have several flat spots or be very fuel inefficient. This needs a lot of custom mapping, something most of us are not able to do, even if the USB connection is there ...
The kit itself looks complete though.
My 2 cents.
Dear Mo Bobber,
Not sure what you mean by "no insight or opinion" given that TD and I did comment, though clearly neither of us has undertaken such a project. I doubt many people have. The ScootDawg poster mentions that the main motivation for wanting to do this is a sense of fun and adventure rather than severe disappointment with the performance of one's carbed bike. It's at best a "fun to try" option, not a "must do."
Frankly, I was kinda hoping you'd take the plunge and give the kit a try! Have a bit of fun and take lots of pix and post the whole process and results here in MCM for the benefit of all. You can be the pioneer!
Whaddaya say?
Cheers!
$400 for a minor increase in fuel efficiency on bikes that are already very fuel efficient and a minor power increase on bikes that will never produce substantial horsepower seems like money wasted. $200 I might give it a shot.
Cheers!
ChinaV
Actually, though I'm relatively new to motorcycles (bought my 2000 KLR650 on my birthday in 2009, and my JH600 in spring of 2010), and I've owned only three cars in my life, the first two cars were VW's pioneering Type III Squarebacks. The first was a 1968 model that I bought in 1977 for $350 in Sebastopol (the engine was in the mud next to the car), and the second was a 1971 model, barely running, which I bought in 1982 for $600. What was pioneering about the Type III? VW offered an optional electronic fuel injection system, called D-Jetronic and made by Bosch, which was one of the first commercial EFI systems when launched in 1967. It's described in Wikipedia thusly:
The Type IIIs all had the Porsche-inspired air-cooled 1600cc "pancake" engine, a four-cylinder answer to the BMW boxer design, squirreled away behind the rear wheels in a seemingly impossibly small space, and, since the engine was secured to the differential by just four bolts and weighed less than I did, I could have it out of the car in just 15 minutes. I did so on the side of the street in San Jose one time when I sucked a valve and had to do an on-the-fly rebuild to get all the shrapnel out of the case.Quote:
Bosch developed an electronic fuel injection system, called D-Jetronic (D for Druck, German for "pressure"), which was first used on the VW 1600TL/E in 1967. This was a speed/density system, using engine speed and intake manifold air density to calculate "air mass" flow rate and thus fuel requirements. This system was adopted by VW, Mercedes-Benz, Porsche, Citroën, Saab, and Volvo. Lucas licensed the system for production with Jaguar. Bosch superseded the D-Jetronic system with the K-Jetronic and L-Jetronic systems for 1974, though some cars (such as the Volvo 164) continued using D-Jetronic for the following several years.
The Bosch EFI system was very very well designed, with various temperature sensors in addition to the manifold air intake density sensor mentioned above. Wires all led to a black box -- the ECU -- mounted inside a rear quarterpanel. Imagine! I had a central processing unit running my fuel system back in the 1970s! It was not user serviceable, and the only adjustment you could do was mess with the spark timing in the distributor, which employed a vacuum system to advance the spark. (I once jury-rigged a part from a soda can pull tab (yes, they were not yet banned back then; we still have them here in China)
http://upload.wikimedia.org/wikipedi...e-pull-tab.JPG
to keep the vacuum advance plate working properly.)
Otherwise, the only service was to clean or replace the injectors as they became fouled. Being a cheapskate college student, I relied on rebuilt injectors.
To make a long story short, those two cars were brilliant -- super reliable, fun to drive, could carry a ton of gear and home-made roof racks (see image below), had a big trunk up front where people thought the engine should be. Oh, and gas mileage. I never got less than 42 miles per gallon (5.6 liters per 100 km)! So I'm a huge fan of EFI, especially Bosch (and have high hopes that our JH600 stalling problems will be resolved with Bosch's help).
http://euphonius.smugmug.com/People/...-kayak-2-M.jpg
I agree with 998s and ChinaV.Way to much hassle for to little improvement.
Would you not have to put a new exhaust system and airbox on to?
My friend is always over modifying all the bikes he gets.They never run right.
Well. I am kind of cautious when it comes to P&P solutions, too. After all, P&P turns out to be a lot of adjusting work most of the times (with computers at least).
But I wonder how a bike not C3 compliant bike with an efi kit would be treated by Chinese registration authorities. As far as I understood, the manufacturer has to go through the process of C3 approval. But maybe ther is a way to get a single bike that is equipped with such a kit approved? That would be a solution to many of MCM members problems with registering >150cc bikes...
Why do I feel that it is more fun to discuss these Squareback's, then the replacement EFI :icon10:. GREAT cars, you should wish you still had one!Quote:
Originally Posted by euphonius
Thanks for all the opinions and info guys.
I need to convince my wife that i need a few things for Christmas
I live in southern Missouri if you're not familiar with the layout and seasonal pattern here. The weather is crazy in the facy that we can almost get all four seasons in one week. Lol. So i was just curious as to "the experts" views on the kit
And i dont believe you would need a new exhaust or air box from what I've read.
During my recent visit I saw quite a few Type IIIs in California, where as you probably know cars do not rust. You can still get Squarebacks in good condition for $5k or less.Quote:
Originally Posted by 998S
Ooooh, and I saw the sweetest Karmann-Ghia in Marin County. Those were all carbureted to my knowledge, but surely could be retrofitted with the Bosch EFI!
hello,
I have a MOTOEFI 33 pin ecu, can anyone help with wiring diagram?, thank you
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