| Author | Message | ||
     Alstroker |
Why doesn't someone come up with an aftermarket ecm that is fully programable from your lap top? Maybe some of us should pitch in and get some fuel injection expert to develop something for us. I am accustomed to carbs and the infinite tuning options. This electronic fuel injection has me feeling a little uncomfortable about doing any mods. | ||
| M1combat |
As long as your mods will needs more fuel (almost always the case I believe), you can use a Techlusion box or a PCII. Spark timing is a whole different issue... I think that's adjusted with the cam position sensor. Maybe... Buell does make a fully adjustable unit that I think will adjust spark curve as well. You just have to have a race license to get one I think. | ||
| Opto |
There are many aftermarket ecm's available... Upsides - programmable ignition and fuel from your PC or laptop. - ability to tune for different mods Downsides - cost - compatibility with existing sensors - may need a MAP sensor - wiring it in - need ability to run the fan - time and money to dial it all in and fix bugs. I'm keen. The Motec M4 Clubman looks good to me, but I'm not an expert. | ||
| Wyckedflesh |
Megasquirt is one that you build yourself and they have a new versions coming out that will be even more compatible with the Buells. Right now you need a stand alone ignition which can be supplied by a Dyna2000/4000 box but the new unit coming out will handle ignition as well so you can map your own curve. Their software is suppossedly very easy to use and very adaptable. Its been run on pretty much every type of engine on the road including 2-strokes. Rough figures are about $350 for the new box with the ignition control, another $100 for various sensors that might not be compatible as replacements for the Buell sensors then figure however much dyno time to tune it all in properly. It does have a "turbo timer" feature that can be used for the fan so that isn't a problem. | ||
| Fullpower |
dynatek makes a 2000i that looks like it could fit in the location of the stock cam position sensor. i run one on a 5 speed sportster, in single fire. works pretty well, the first one fried in a week, they waranteed it and no problems for 2 years now. | ||
| Slaughter |
I gotta say the "Offishul" race box is not trivial but you get a degree of control unavailable elsewhere. YOU MUST tune both cylinders separately using a sniffer for each. In philosophy, you're really tuning two slightly different big singles - one runs hotter than the other. That means a MINIMUM of a couple dozen runs on the dyno BEFORE you start adjusting your map and then doing a couple pulls after tweaking (12 runs for each cylinder unless you can read/record 2 sniffers in one run). The real race teams already have maps that are pretty close and don't lose days on the dyno when they make changes. Trust me, not worth the trouble for a street bike but if you have a motor that calls for WAY more fuel than the stock can keep up with, I think it looks like the techlusion box - just haven't heard enough (other than reading their website). We're finishing break-in tomorrow on the race bike and Monday will spend the whole day on the dyno. Hal's really helped by making a starting map available - I can't say enough good about them and their enthusiasm for this sport BUT - that box is only available to racers. It'd be too easy to melt a motor just trying to get it lit and running well enough to consider a dyno run. You cannot CANNOT just put the sniffer up the tailpipe because you can have one cylinder running lean enough to melt down and the other too rich and you really can't see that at the tailpipe - you need a sniffer at least a foot forward of the 2:1 junction. Like I said, not trivial but when done - could be sumptin else! Buddy of mine got an XB12 and he's really looking for ECM options but is having to settle for the stock race unit. | ||
| M1combat |
I would imagine that if you were provided a "safe" map for a stock bike that you could talk with the engine builder (if they know their stuff) and make some very educated guesses. I agree though, starting from scratch would probably be a bad idea for most  . | ||
| M1combat |
I'm torn between a stock ECM w/ the stock pipe (I like the idea of the exhaust valve) and a Techlusion, or a Drummer, race ECM and techlusion. | ||
| Oconnor |
You can run a tech-3 but its expensive. And yes you will need to put a map sensor in, easy enough to do though. And it does have the ability to operate fans. Can tune it while its running from a pda as well. Cool set up, but if your not racing or running hot cams and high compression or forced induction, it may not be neccessary or worth it cost wise. Loved it on my cars. | ||
| Sshbsn |
You just hit the nail on the head, M1. The exhaust valve on the 12 makes it hard to decide, doesn't it? I'm stuck in "wait and watch further developments" mode. | ||
| Fullpower |
I do not miss my exhaust valve. Drum Drum Drum Drum Drum Drum Drum.. | ||
| M1combat |
Me too ssh, but if I don't see what happens pretty soon I'll have me a Drummer... Sound is important too. The Drummmer Dyno's seem to show an improvement across the board w/ the Drummer so it's real hard to decide. I'm wondering what the new DFO will think of an exhaust valve that changes state based on RPM and throttle position... | ||
| Alstroker |
I'm a mechanical engineer and the engineer in me really makes me want to learn more about electronic fuel injection. I have done my own carb jetting on dirt bikes and street bikes, so I feel I have a fairly good idea of fuel metering. Thanks for the info guys. | ||
| Xbolt12 |
Great thread guys! Lots of good info-especially the inside scoop on the race box. xbolt12 |
