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Fancy a little scalding tea & hotcakes? https://riders.drivemag.com/news/best-selling-adventure-bikes-here-are-the-most-successful-models-in-2019-germany-and-italy

I have looked as far into the pipes I could to see what's in there on all the middle parts (x sections/xovers/x pipes)I've gotten,so I'm curious about that too.I only have the Stucchi and this MASS x pipe part that I can take pictures of.The Stucchi you could guess that the weld is as wide as it is deep so maybe a little bit smaller than the welded part then. On the MASS part the hole is as big as the pipe ,but on the Stucchi it's not as high as the pipe itself but longer.

I've got to write all this relay troubleshooting down on a plasticised card and carry it on the bike. Ciao

Thanks guys,I'm gonna buy another cheap new PC as I run one program for work that is easier to run on a PC than Mac, so I should be able to write it off for work as the POC I am using running Windows 8 was 5-6 years old anyway and big so I can justify the relatively small purchase.I also plan to use this on my Ducati ST for TPS re-set and CO set so I can use for all....I'll let you know how it turns out....

You mean besides making sure the forks have enough clearance when steering?

Tried it.. Slip a bag in there and find out...🤣There's a reason...

The smaller diameter inner pipe at the cylinder head may be for strength, as that is the focal point of vibration and mounting stress. As well, smaller pipes leading to larger pipes provide a sort of "expansion chamber", which technically can help in scavenging the exhaust. IIRC, the expanding gas as it enters the larger pipe, produces a bit of a lower pressure behind it, which helps draw the rest of the exhaust out of the cylinder.

It looks like a great system, I'm looking forward to pictures of it installed. A comment on pipe size: as exhaust gasses travel out, three changes happen. 1.The pulses smooth out slightly as they expand into a larger volume. 2. The gasses cool down due to both expansion and heat loss radiating out of the system. 3. In a constant diameter pipe, the gas flow speed slows due to effects 1 & 2. This explains why motorcycles with two headers leading into one muffler (eg Griso) do not suffer any power loss caused by exhaust system restriction. Bigger pipes are less restrictive to gas flow, however, with all other things being equal, gas flow in a big pipe is slower than in a small pipe, so the negative pressure pulses, or extractor effect, can be reduced. Your aim of 42mm dia pipe all through could be a great idea, or it may just add weight. It will be great to hear how it works out.

I was curious ... so I took the chance to make a test ride at my dealer yesterday. Man this is a great bike, I did not expect this. The engine has enough power for such kind of bike. The engine and the gear box work super smoothly and even if it is simple the chassis is extremely efficient. My dealer (https://www.clauscarstens-racing.de) told me that he was also very skeptical about it at the beginning. He feared that it was a similar lame duck as e.g. the V9 Bobber. But even if the motor looks similar it is a completely different engine. Unfortunately my dealer gave up his Guzzi dealership after decades because of the poor Guzzi portfolio. He is also the biggest Ducati dealer here in northern Germany and this was not an easy step for him because he is also is a fan of the Guzzi brand like it was in the past. The current California models and the small Guzzis models simply do not sell up here. But after testing the V85TT he decided to sell those...and it works. He already sold 11 this year which is a lot for a Guzzi model. They are selling like hot cakes and do not even reach the showroom. While I was riding the red one another one arrived - already sold.

Exact;y! And this "could" be the bike, but we know how well Piaggio Group listens to consumers... Posted this elsewhere and just could not resist re-posting it here.