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Post by mx5tc on Oct 21, 2008 14:29:26 GMT -5
Hopefully, Electrojet or a competitor will release an aftermarket TBI system that is user programmable and has a universal wiring harness. Not much you can do with the current system. If they actually pick up a contract for selling EFI to Chinese manufacturers it will bleed over to the US as an aftermarket kit fairly quickly. They need a major OEM to get to a "Production Quantity" cost base. Not likely to happen soon. Just spent some time on the phone with Electrojet this afternoon. Their current focus is getting OEM contracts in place, they don't even plan on looking at aftermarket products for another year. Any system they develop for an OEM will be soup-to-nuts and include a proprietary ignition sensor (either crankshaft position or Cam Angle Sensor), proprietary harness to connect TBI to bike harness, proprietary ignition coil, O2 sensor wiring and proprietary programming specific to a powertrain etc. Not sure when one is first going to appear on a production Chinese or Taiwanese scoot but it is likely to be a while. Once a scoot has the system OEM, I suppose you could always try to order all the parts from a scoot with similar displacement & configuration as your own but that would get expensive quickly when you add up all the pieces you are going to need to buy from a dealer at retail (if they will even sell to you without an appropriate VIN): Throttle body ECU unit Wiring harness Crank/Cam Angle sensor O2 sensor ignition coil & harness high pressure fuel pump fuel pressure regulator & filter fuel return line plumbing Additionally, you would have no ability to tune or modify the fuel or ignition curves of the OEM sourced Electrojet because they will be hard coded into the PCM's EPROM. Electrojet is thinking about eventually going after the aftermarket Harley market; good choice for them with a large user base, common throttle body size (Keihin pattern) and an owner base that is inclined to spend heavily on upgrades. They haven't even thought about establishing a dealer network yet, so don't hold your breath waiting for 150cc scoot conversion. Kind of sad; it is really a slick product that has cleverly integrated TPS, MAP and IAT sensors as well as the PCM into one unit that has a CV carb size footprint. Mitch
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Post by thedannymullen on Oct 21, 2008 22:45:39 GMT -5
I emailed them also and just like mx5tc said they are oem only. I still wonder though if we could in essence create a market place? The point is since most gy6 150cc engines use the same/similiar carb assembly, we would need to convince them to design an aftermarket one for a given carb/engine combo vs bike. The method of convincing would be to demonstrate a marketplace for it, I just don't know how to attempt such a thing.
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Post by mx5tc on Oct 21, 2008 23:18:08 GMT -5
I'm thinking about taking another run at Electrojet on this. One of Electrojet's issues is that they "create" a unique throttle body/ECU unit for each application. If we could get them supply an exiting TB with fuel management only (and open loop without 02 sensor), it might be possible. Adding timing/ignition management makes the project much more difficult (sourcing/mounting a crank or cam sensor and and coil/ignition system which can be triggered by the PCM).
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Post by dtwscooter on Oct 22, 2008 14:01:06 GMT -5
Jacine, If you are reading this post can you help with some stats?
1. How many 150cc scooters were imported last 5 years? 2. What is projected market for the 150cc scooters in the future - best guess ok? 3. What is the US emission law on existing scooter purchased before the law takes effect?
Thanks for you help.
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Post by jamescell on Apr 9, 2009 12:46:42 GMT -5
I didnt realise how easy using the mega squirt could really be! Many of us already have capable fuel pumps, we just have to add a return line. You can leave your ignition alone and just take one wire over to the mega squirt to give a rpm and timing referance. This injector looks perfect www.diyautotune.com/catalog/delphi-lbhr-multec-shorty-style-fuel-injector-hiz-p-273.html . The only other thing you would need is a throttle body out of a wrecked snowmobile or small car and a O2 sensor. If I had a little spare cash sitting around I would try it right now.
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Post by prariewolf on Apr 12, 2009 13:01:05 GMT -5
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Post by dancatalyst on Jun 11, 2009 0:49:16 GMT -5
ive built a couple megasquirt systems for my cars.it has a spark option too. works on 2-4 stroke,1-12 cyl .i was thinking about running one for spark only on my scoot.it works with magnetic pickups and the kit version is only $143.you can run an advance curve based off of rpm only,so no sensors needed for spark control .you could run spark and fuel with a tps sensor or map or both.it can run closed loop,so a o2 sensor isnt realy needed.
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Post by earlwb on Jun 11, 2009 13:49:17 GMT -5
OOh, yeah the spark option. I like it. it keeps it simple. Thanks for mentioning it.
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