P.S. All of that said... If given the opportunity to do it again I may be inclined to go a different route than Termignoni. No doubt, it's the safest bet. However, based on the findings in this thread: http://www.ducatispot.com/forums/showthread.php?t=5687 I would put my money on the Leo Vinci slip-ons, K&N air filter, and leave the ECU alone.
If EDR can get a good fuel mixture out of the stock ECU while running a full system with a transplanted Lambda sensor, it should have no problem dealing with slip-ons and a filter.
It's a load of Shite that the dealer tells you the stock ECU can't handle slip-ons by itself. It certainly can and does. Think about it. The stock ECU works off a closed - loop system designed to keep the air fuel mixture perfect on the fly. You see guys spending gobs of cash to replace the closed loop system and then pay someone to dyno tune it with a sniffer. The stock ECU setup has a sniffer built in!!!!
Okay, so what's the downside? Well, perhaps it's horsepower? I don't know. That EDR post shows the bike making pretty decent power all by itself. If you really need to tweak you can always throw a PCIII over top of the stock ECU. But it will only work above 5250 rpms. But then, who is trying to make peak power below 5250 rpms? Another downside is tunability. You're not able to truly tweak the fuel and ignition maps because the stock ECU is changing them on the fly and compensating for the changes you make. But that level of control is really only necessary in a full blown racing application.
Your goal with slip-ons should be to get a nice sound, lose some weight, pick up a couple of ponies, and most importantly not run the engine too lean due to increased flow. If you look at EDR's results, that's exactly what should happen if you throw a set of slip-ons on your 848 with no other modification. The stock ECU will keep your air/fuel mixture quite safe.
I prefer the quality and look of the Leo Vinci cans to the Termi stuff. I'd go that route. I may still go that route if I can get most of my money back on the Termis.
