It looks like the ECU that was installed with the 54mm Termis on the 04 999s that I recently purchased has gone to shit. The vertical cylinder is not firing every stroke. Bike has been in the shop for weeks now and they have ruled out any mechanical issues. I don't have the stock exhaust, but the original owner has the stock ECU. Do I have any other options besides either purchasing a new ECU for the Termis or running the stock ECU and purchasing a stock exhaust system? Any advice would be greatly appreciated. Thx.
could it be reflashed?
I don't know. Does reflashing do more then just reset it for a new bike? I am clueless on the subject, and the research I have done has just confused me more. The tech refered to problems with the ECU's on the 999s in 03, 04. He didn't mention it as an option. Just either replacing the ecu, or running the stock one and a stock exhaust. With that being said, the original owner thought he had the original ECU, I am not sure that it will be a legitimate option.
the 999 ecu's are the Magneti Marelli. they can be reflashed. IF your DP ECU went bad and you have the stock. you should be able to get the stock reflashed to the DP map. check with the sponsors here, then try DesmoPorsche
Oh, I thought that each ECU was specific. I didn't know that a stock could be reprogrammed with a new map. Thx for the info. I emailed DesmoPorshe already, to see if they had exactly what I needed. It looks like the have one (that I assume has been reflashed) for $500. I am gonna start looking at the board sponsor's tonight.
Quote from: psycledelic on August 11, 2010, 09:44:28 PM
Oh, I thought that each ECU was specific. I didn't know that a stock could be reprogrammed with a new map. Thx for the info. I emailed DesmoPorshe already, to see if they had exactly what I needed. It looks like the have one (that I assume has been reflashed) for $500. I am gonna start looking at the board sponsor's tonight.
since you have the stock one why not reflashing that one to the spec pipe you have for $350?
I would put the stock ecu in - just for a test - and see if the vertical cylinder starts firing on every stroke - or like it is supposed to. If it is a sensor or some other problem the stock ecu would have the same issues. Is the gas fresh? Old e10 can do funny things.
Quote from: devimau on August 12, 2010, 10:12:23 AM
since you have the stock one why not reflashing that one to the spec pipe you have for $350?
Quote from: Bill in OKC on August 12, 2010, 12:09:27 PM
I would put the stock ecu in - just for a test - and see if the vertical cylinder starts firing on every stroke - or like it is supposed to. If it is a sensor or some other problem the stock ecu would have the same issues. Is the gas fresh? Old e10 can do funny things.
All of that hinges on the fact that the original owner of the bike has/can find the stock ECU. He said I could have it and he would bring it by the shop if he could locate it this weekend. The tech originally wanted it to test the bike, like you recommended. I didn't know that you could reprogram stock ECUs to accommodate the Termi mapping. If I end up with the stock ECU, and it works, that will probably be my course of action. I just need to find out who does the reflash.
As far as the gas goes, the bike sat for about 6 months before I bought it (only 1200 miles in the last 3 years, but I had already run 3 tanks through it before I started having issues. The tech went through all of the mechanical stuff and found nothing. valves were in spec, both sets of plugs / wires / coils worked on the horizontal cylinder when he switched them around. He is convinced it is the ECU
Hypothetically speaking - if a different ecu were to do the same thing, I'd check the injector. In Oklahoma we have the choice between e10 and regular gas. If my bike (an Aprilia) sits for a few weeks with e10 it, it will start on one cylinder for a few seconds until the other cylinder kicks in. If it sits with real gas, the bike starts right up after extended storage. Just guessing the ethanol or water in the ethanol might do bad things to the injector.
Have they swapped coils? The 03-04 coils have a habit of going bad.
Quote from: TAftonomos on August 13, 2010, 10:22:02 AM
Have they swapped coils? The 03-04 coils have a habit of going bad.
Yep, they checked both and I assume this is one of the parts the switched between the two heads, and both worked on the horizontal, but not 100% on the vertical.
the ecu is in charge of grounding the circuit for the coil to spark so if the coils worked on the other cyl IMMO that takes away some questions:
rpm sensor should be fine
coils should be fine
I've had 1 999r and 1 st4s with 59m ecu that were doing the same thing......ecu faulty.
If that's the case the grounding circuit of the ecu might have a bad spot or week solder point, you might have to replace it since is a hardware issue and not a software one.....but you can find used ones......
Quote from: psycledelic on August 14, 2010, 02:20:35 AM
Yep, they checked both and I assume this is one of the parts the switched between the two heads, and both worked on the horizontal, but not 100% on the vertical.