Nobody is 'Convinced' of anything but there is a known issue of a batch of bad pumps on 2007 Norges in particular so if he's getting constant pressure warning alerts common sense dictates you look at the known issue before flying off wildly at a tangent.
As for TPS, ECU and 'Mapping' problems? The fact that all three are listed means presumably that all three have been singled out at one time or another as the source of ongoing problems but the suggestion seems that problems persist. To me, as a casual observer, the source of the 'Problems' is far more likely to be related to who has been working on the bike. Like, just maybe, they haven't got a clue what they're doing!
You know how many TPS's I've replaced on W5AM Guzzis in the last 13 years? One! How many ECU's? Two, and one of them was a spare I sent to someone who was sure his ECU was dead but my one didn't fix the issue. He didn't think it necessary to send it back mind, even though I'd lent it to him. One that looked suspiciously like it appeared on eBay a few weeks later. So let's lower that down to one, (That got voltage spiked, not the ECU's fault.)
As for 'Mapping Problems'? While the standard Norge map is a bit pedestrian and lack lustre it doesn't cause any dreadful fuelling issues or terrible behaviour. What will is if the bike has been fiddled with by someone who doesn't know what they are doing. Most bad running is caused by clowns playing about with the throttlebodies and saying that They should be adjusted "Like Carburettors".
As for the CARC problem? No, it shouldn't of happened and I personally think the use of a collapsible spacer between the pinion bearings was a mistake BUT they only rarely fail and if caught early can be fixed with little pain and expense. It's a machine. Sometimes they go wrong, but it's not common.
Pete
