Hello I recently bought a 749S from 2007 and it come with a termignoni kit (exhaust and front cylinder tail pipe). I started questioning if the kit was complete because the back cylinder have the original tail pipe, wich I believe if normal in this termignoni kit. My questions are: 1) How many termignoni kits were available back in 2007 for my motorcycle? ( I belive it was 2 kits, 57mm and 54 mm) 2) What parts consisted the kits? (1 or 2 tail pipe?, ECU?, air filter ?) 3) ECU were allwys needed? It made a diference if it was a S version? If anyone has termignoni advertisement papers or technical details, please share! Thank you!!