| I have Termi asymetric system on 749S (2003). With the ECU that came with the Termi it was fine, and had no flat spots. The ECU blew one channel (cut out one cylinder) so I reverted to the std ECU and added a Power Commander 3. With it tuned on a Dyno, it then developed a flat spot around 5k-6k rpm, that I hit nearly evey time I changed gear. I took it back and they tried to tune out the richness at the point and it's now better in one respect but developed a drop in power at that point. It's at a lower revs, about 4k, and I hit it sometimes so it feels a little flat, but goes well once through it. Symptoms are as you describe above. Pretty sure it was due to richness at that point, rather than too lean.
Bottom line is .... not sure what the bottom line is. I was initially very pleased with the PC3, but for the flat spot. Now it's a bit odd ... but I might take it on track and see how it goes without trying to dodge traffic all the time.
I might end up using the Ducati ECU when the new one (warranty claim) comes in. Jury is out at moment. I might see if there is a std map on the PC3 CD first though and try that.  |