Just got a twin pipe set of termis for my hyper... What a shame they don't bother giving you instructions, lot of head scratching but got there in the end, sound wonderful she's like a new bike now! New air box cover and ECU fitted in process..
I got instructions for fitting with my single system. Not sure if they came with the bike or if someone sent them to me or I found them on the internet though! They were genuine instructions; looked like they came out of a service manual or something. Maybe only the dealers get them!
Mmmm ... None in the box and I searched the net too with no luck... The real problem was that I was fitting mine to an existing R and G tail tidy .. I phoned R and G and they said they didn't recognise termis that their products were only meant for the standard pipes! Hence no modifications.. Looks sweet now though...