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Here is a comparison between the ignition maps from the first generation -00 ECU and the most recent -11 ECU.
As you can see there is major differences between 1333 -> 4333 RPM at throttle position 0 -> 41.3 % http://www.xt660.com/gallery/display...p?imageid=2155 |
Great info.
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I have received the ECU from Spiros and I will test it as soon as the snow melts here in Sweden.
The spring has begun already and I hope to test the bike within a week or two. If it works good I see this option as a much more economic alternative compared to a Powercommander. For several reasons: 1. The lambda can be completely turned off, no need to have o2 controller that can fail. 2. Turn of the secondary air system, no need to plug any hose. 3. Get correct ignition table. 4. Fix the complete fuel shutoff when decelerating. No bangs from the exhaust and more smooth transition from closed to acceleration. (Impossible to fix using Powercommander). 5. Possibility to remove immobilizer. (e.g Race applications) 6. Higher revlimit. I will soon post back my results. |
Some of the technical side of what's being discussed here is beyond me....but reading between the lines should I put plans to buy a Power Commander on hold.? What exactly does re-flashing the ECU entail..? Steve
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Sounds exactly the same as a Rexxer map
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Yes it is like a rexxer map. But the rexxer is not availible for the xt660.
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Interesting stuff. Thanks being the test pilot for re-flashing XT ECUs, and for sharing it all with us. :thumbsup:
Have you got any idea of what the total cost for the finished re-flashed ECU will be? Also, do you intend putting the bike on a dyno and doing a comparison between the ECUs? I'd be very interested to find out how the re-flashed unit performs against the stock ECU with Power Commander... |
I won't go into the long winded journey How I arrived at a Rexxer map on my K1200 nearly two years ago but already running two bikes fitted with Power Commanders it was an interesting experiment.
The end product is all but identical except there's no expense of a PC and no fitting and no piggy back to go wrong. Where it gets complicated bikers like dyno maps and yet people have been having turbo diesel cars remapped without a dyno run for years but Rexxer have it down to a fine art you phone a supplier with your model/year/aftermarket mods even down to which filter and aftermarket can. Rexxer supply a map down the wire and the dealer blows it in end of. |
To some extent I also prefer the powercommander, it is possible to tune and map the bike to your specific engine modifications. But if you only are going to make the ordinary modifications e.g exhaust and airbox mods, then a standard compensating fuel map is sufficent for most people.
In my example, I have a open exhaust, stage 2 dna no snorkel. There are several already made maps for this setup. If I load one of these maps and then later take it to a dyno I will probably see a very small improvment or none. It has already been done.. But if you really want that +1 hp at 4356 rpm then you need to pay up and make a custom tune. Its like carb tuning kits you tell the seller what setup you have and they select from a list what recommended needle height and jet size you should use. In my reflashed ECU there is a already made fuel map for a open exhaust and modified air box with stage 2. |
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