The reason people (myself included) use R6 headers is because they fit with minimal modifications. Our engine is based on the engine from the 2003-2005 R6 engine. It's not so we can say we're running the exhaust off and R6. I'd much rather run the TBR that's made for the FZ6R. And I may still end up buying it in the future because I think it'll run better and in all honesty, look better than what I have currently. (Not that mine runs poorly. It's running great and sounds great.) I just didn't have the $900 to drop being that I've been out of work for the last 2 months. I got my headers for $30 on ebay and I bought the GYTR R6 slip-on for $230. So that plus the high heat paint, and some various hardware and bracket building material, I'm all of $275 into my system and about 12 hrs of my time (not worth much while I wasn't workingMany have jumped to the R6 exhaust ship. I'm questioning if it's really worth it. Are the tubing dimensions appreciably bigger on the R6 pipes? Lots of guys have taken the headers we already have and made exhaust mods whether it's just punching holes in the muffler or cutting the cat off and installing an after market silencer. Just because it came off an R6 may not mean it will actually add more power except for the R6 mirrors of course. Also the blue FZ6r's are faster than the others.
)My Butt dyno is notoriously inaccurate.
I have also noticed with my R6 header and D&D pipe , the power in the upper revs is much more "violent" and on full throttle take offs the front wheel is VERY light if not skipping along the pavement barely touching.
im in the same boat...only downside to mine is the muffler is really long...but i plan on cutting mine in december, as well as fixing my exhaust leak...how i dont know (maybe doubling up on the gasket(s)) then i should be sounding really nice...i might even get a better another tune done after the fact