Google will help you with that as it's been covered ad nauseum here and on the net. In short, water-cooling and far more modernized engines and tech.
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Kev M
Cruisin' Guzzisti
Hmmm, I disagree with your initial premise.
Although yes tighter EPA and EU regulations have made it harder for manufacturers to make air-cooled bikes run perfectly the I don't think many modern bikes NEED a tune to make them run correctly. Though I will admit there may be benefits to said tunes.
The reason MOST people tune modern bikes is because they either have replaced the mufflers and/or are chasing hp.
Now that said, yes Guzzi seems more prone to some fueling anomalies or bad OEM maps than other brands probably because of simple volume.
That said, with the exception of stalling if I don't allow it to warm up a few minutes after a cold start (and moreso in warmer ambient temps), my V7 I runs just fine and doesn't "need" a tune.
Same goes for our 07 Sporty, 11 Duc, and 16 FLHP.
I also would have said the same for my 96 FLHRI, 96 R1100RSa, 00 Jackal which are gone, but not forgotten.
I have a stock V7II with the most recent OEM fuel map. I start the engine, and then put in my earplugs, and put on my helmet, sun glasses and gloves. I then get on the bike and ride. I do not ever have a stalling problem with this short warn-up. Sometimes it doesn't go into first gear with the first try, but by the time I get to the first stop sign/light it's working fine.
Dan
Dan
The stock map on the V7III is actually okay, but it does need warming up before you can ride away. It is what it is, the manufacturers must ensure that *all* engines pass the emissions certification.
All engines should be warmed up a bit before riding off anyway. It extends their life and reduces unnecessary wear.
The GT-Rx ECU Tool with the map for the stock engine configuration improves the startup and warmup quite a lot. It's well worth the $500. I fitted Agostini mufflers to my bike, and use a customized ECU map now ... the engine runs perfectly with this setup. It was about the same cost as my first service at the dealership; I don't think that's anything to complain about for a tool that has ongoing value for the life of the motorcycle. Why not get the right tool and have the bike run properly so you can enjoy it more?
Regards the need for a Windows PC: My partner and I both use Apple equipment running macOS, but a small PC that can do what's needed cost us $90 from Ebay with Windows 10 included. It's proven useful to have it for a number of other minor things as well, where customized software only available for Windows is needed, and it saves having to manage another OS environment running on the Apple equipment. That's cheap enough to be a no-brainer.
All engines should be warmed up a bit before riding off anyway. It extends their life and reduces unnecessary wear.
The GT-Rx ECU Tool with the map for the stock engine configuration improves the startup and warmup quite a lot. It's well worth the $500. I fitted Agostini mufflers to my bike, and use a customized ECU map now ... the engine runs perfectly with this setup. It was about the same cost as my first service at the dealership; I don't think that's anything to complain about for a tool that has ongoing value for the life of the motorcycle. Why not get the right tool and have the bike run properly so you can enjoy it more?
Regards the need for a Windows PC: My partner and I both use Apple equipment running macOS, but a small PC that can do what's needed cost us $90 from Ebay with Windows 10 included. It's proven useful to have it for a number of other minor things as well, where customized software only available for Windows is needed, and it saves having to manage another OS environment running on the Apple equipment. That's cheap enough to be a no-brainer.
Trout
GT Reference
I imagine that cars & trucks have (usually) more cylinders, different air intake systems & more room to have more/different sensors that offset the issue plus heavier flywheels & counter balances on the crank & are much heavier pieces of equipment so it is not going to be as noticeable. The lean condition to meet EPA is still there the driver just does not notice it.
As far as the Jap bikes go any ones guess is as good as mine, they do seem to be a buy & ride type of machine but they have their own issues as well. I have never owned a Jap street bike but the few I have ridden left me less than thrilled. I was really excited when Honda did the retro CB1100 but after a few test rides it was a very boring machine.