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God's teeth! No offence was taken! The problem is that there is this vast misconception that 'Modern Guzzis are mapped up lean to meet the dictates of the evil Gubmint whose sole aim in life is to screw everybody over. This sort of tinfoil hattest nonsense gives me the screaming shits.Yes, the mixture in the closed loop portions of the map is very crudely trimmed to enable the engines to pass the nowadays stringent emissions requirements. Why 'Crudely'? Because 'Crudely' is cheap! If the factories were willing to spend a bit more money developing the actual MAPPING the way the motors run, the amount of fuel they will use and the overall behaviour of the bike would be greatly improved. Could they meet the very tight rules? Probably yes if the job was done right. Will they be able to with E5? Dunno.The actual maps themselves though are almost universally rich. They are trimmed lean by the ECU by means of input from the narrow band lambda sensor. As long as the lambda input is left on it doesn't matter what pipe you put on, in the closed loop portion of the mapping the ECU will ALWAYS trim the fuel to the same point it has been told is optimal.Once out of the closed loop portion of the map the maps are built rich because a.) The factory knows that one of the first things noisy morons do is stick on louder pipes which with a heron or semi head design will tend to lean the mixture and they don't want a rash of holed pistons blotting their copy books and b.) by making them rich they run sub optimally meaning that if people fall off and try to sue because the bike was 'Too Powerful'l they have the evidence that they could of made it more powerful, (With a small block? Snigger!) but chose not to in the interests of safety etc, etc, blah, blah, blah Yes, this is a generalisation but it covers the pertinent issues.If you want the engine to run optimally you have to turn off the lambda and build n open loop map for that pipe/engine/induction system. nasty little add-ons like sensor foolers don't work and can actually cause serious engine damage but they are popular because they are CHEAP. You pay peanuts? You get a monkey solution to a complex problem.Fuel injection does NOT work like carburretors. Don't try and apply carburettor theory to a FI bike because you'll be on a hiding to nothing.Good luck with whatever you try.Pete
Got it. Lurk more, post less. Thanks.
Point of reference, shortly after break-in I was playing with a GPS tracking app and my V7 and broke the ton with something left.... Probably not much, but something.I currently run 2 Harleys, 1 Guzzi, and 1 Ducati, all with stock intakes, exhausts, and mapping.
Sure, but this is a long straight uphill grade, maybe 6% (anyway, steep enough that on the downhill side of the freeway you can coast at freeway speeds in neutral and pick up speed)? What year is your Ducati? Mine was a 2008, and seriously, the stock fueling kind of sucked, and back then "most" Ducati owners went the route I did. Meanwhile, my old 2007 BMW GSA is spot on fueling wise bone stock.Here in CA I do not think dealers will be able to sell "race" ECUs much longer. CARB is starting to crack down from what I understand.
I don't like too loud pipes. There must be some music in them, but if they are too loud I got a headache on a longer trip.
Hey Rob, I know you put the db killers back in. How loud would you say the stock exhaust was compared to the agostini? I was trying to find some decibel figures online and couldn't.
I cut almost half the length off the baffle on my Agostinis. Perfect compromise.
Thinking about doing this on my V9 Agostinis. How did you arrive at cutting half of them? Did you consider a shorter bit of cut?Thanks. It�s too loud with baffles out and too quiet with them in so your compromise makes sense. Anyway, better than drilling holes. :~)inditx
It was just a WAG. I cut about 40% of it off and was lucky that the sound was "just right".Used a Sawzall and then sanded the sharp edges. Worked out well.Everyone who heard the bike would comment on the nice quality sound. I've sold the mufflers to Sib and he says they sound great on his bike, so I got what I wanted with the first cut.Good thing is, it would be easy to "tune" it with cutting small sections off until you get the sound you like.
I buy a motorcycle, it didn't have a DB killer. Tell me which DB model is needed. I want to make it quieterhttps://www.youtube.com/watch?v=ZuqTEru9Epk
I would email agostini. I had this issue with a bike I bought, and I was able to get the DB killers only direct from the manufacturer
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