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A PC doesn't alter any sensor readings going to the ECU. It modifies the injection pulse width based on the map values. In itself not a bad approach if the ECU's content (BIN) can't be modified. I use a PC on a Yamaha GTS1000 to shift the Lambda value, as seen by the ECU, downward by 0.03. The challenge with a PC map is that the breakpoints, neither TPS nor rpm, match the breakpoints used by the Guzzi (or whatever) code. Thus the bi-linear interpolation of the ECU code between the given breakpoints is taken over by the %-variations of a PC map at breakpoints which don't match. The TPS breakpoint issue could be avoided with the Dynojet Power Core-SW to set individual breakpoints, but I've never seen a PC map which actually used this. Changing the BIN loaded into the ECU is always the better choice. Cheers Meinolf

After a bit of googling, I found the protocol for Marelli P8 ECU's is documented by Fiat. These are used in many cars as well as bikes. Some guys on Ford Cosworth forums have made add on gauges using the Fiat documents. A guy on a Ducati forum is using a modified ECU with his own software running on another processor, combined with AFR sensors to play with fueling/tuning of his bike on the move! So there is a modest set of info that you can request from the ECU and this would be displayed on a small OLED screen. Adding a GPS (which are cheap these days) will give speed, or could use a mag pickup on a wheel or shaft. From that and RPM, I should also be able to show gear position. Will post a few pics when I get a prototype knocked up! If anyone is interested in the ECU document: http://download.fiatforum.bg/Diagnostic/Eobd/fiat_marelli.pdf Not found one specifically for the Guzzi ECU, but I believe the command and responses are similar.

Worked on the sump and oil system today. Fitted it all up along with the ubiquitous Roper Plate. Engine kind of looks like a beach whale now resting on its flywheel. Next mission is to make a wooden engine support for the sump so I can get it upright again and pre oil the engine. For all the external fasteners I invested in all new Titanium fasteners. I cant stand the way passive plated ones weather and look horrible after a while. They are costly but if you sell the bike you can always swap them back to the std type and the new owner wont care or be the wiser. Its only nutters like me that will know,and everyone here now. New filter screen. Very nice oil filter access plate thanks to scudd.