Hi All Have any of you on here got a early Ducati superbike with the desmoquattro engine fitted which normally runs the 16M ecu and has been converted to running the later 5AM ecu? Dave
I've bought a 996 which has been fitted with the 5M ecu it starts and runs but has never been on the dyno to set up fueling. my concern is the ignition maps because of the 5m ecu normally fitted to the later Tesasttreta engines and their a shorter stroke. I'm thinking the best way is to just refit it with the 16M.
If you are going to change anything with whatever work it takes to change it little or small then it needs to be set up appropriately to get the best out of it. Even the pre loaded maps and up maps are only a generic near as dammit guesstimate. Secondly what exactly is the combination you have what engine 996? what was done to the loom and who did it, is it a 998 loom? and which ecu with what map, is it std or has it been modified? if the engine is a std engine then you could achieve a good running bike with std 1.6 set up,( why was it changed?not that it matters ) if you want to see it through with the later ecu then get it on a dyno for fuel and ignition. BSD at Peterborough would be a good bet.
Incidentally if you do have the rear section of a 998 loom and you went back to a std 996 loom and ecu, you would get really good money for the 998 section as they are quite rare.
Yes I agree with all you say,was just hoping someone may have a old bike running a new ecu. The bike was built by my friend at the same time I was putting a 1098 engine in my 998, I tried to persuade him to keep things simple but it seemed if it could be changed it would be. This is what I'm working with. 996 frame. 955 Race engine. 749RS injectors. 996R 5AM ecu. Professional built wiring loom. Dynojet power commander. I use FW Developments for my dyno work and speaking to them the ignition maps won't be hugely different. 1st step is to match the TPS with the ecu then dyno.
More good points to consider, It's booked in to have the TPS reset, which after a bit of homework the TPS in the 749 RS throttle bodies is the same as the road going 749 which uses the ecu which I have fitted so fingers crossed on this first step. As far as I can see the only things which are attached to the engine to take readings are the crank sensor and water temp for ecu, which according to the wiring diagram which has come with it's custom loom all go to the correct pins on the ecu. But yes would be a idea to make sure of their signals etc.
RS has larger bore, and the injector holders are part of an aluminium trumpet which then bolts to the throttle body. Google Ducati 749RS injectors-images The road version, smaller bore and plastic trumpets with the injectors mounted in the air box lid.
The throttle bodies are the same size. The kit trumpets are aluminium but are shorter then std 749/999 plastic items. Both hold the injectors in the trumpets, not the lid. I had a 749R kit bike
The ally trumpets are posh to look at when the 996 tank is removed. But can loose power if not used with a high revving engine. Due to being shorter than the plastic ones. I guess the 955 will rev high. Some have bored out the 999 throttle bodies to open them out.
