Also done a very crude comparison here just pulling numbers off the chart as I can't compare the before and afters on the same table.
But I make it (un-mapped on FZ6 cams)
RPM FZ6 CAMS R6 CAMS
3500 - 20 vs 20
4000 - 25 vs 25
4500 - 27 vs 27
5000 - 32 vs 32
5500 - 35 vs 32
6000 - 37 vs 35
6500 - 50 vs 32
7000 - 55 vs 45
7500 - 60 vs 55
8000 - 60 vs 60
8500 - 65 vs 65
9000 - 70 vs 68
9500 - 80 vs 80
10000 - 81 vs 85
10500 - 82 vs 90
11000 - 85 vs 93
11500 - 88 vs 95
12000 - 86 vs 100
12500 - 82 vs 92
So pretty much what I said from my butt dyno. The flat spot in the midrange between 6k and 8k is killing the r6 cams compared to the FZ6 ones but the real low end stuff is almost identical. The high end stuff the R6 cams take control and if the operator had actually run it to the limiter we'd probably see the r6 cams hold the power up until the limiter at the top end as it certainly doens't drop off like the FZ6 cams do.
Without that dip I'd probably say the R6 cams give a nicer smoother delivery overall but the dip does spoil it a bit.
I wonder how much will come out with a tune, don't know yet.
Good stuff, thanks for sharing.
Have you done anything to your airbox? Typically a modern stock airbox will make more power in the low and midrange than a swiss cheese one.
Also the airbox of the R6 is significantly different from the FZ6. In addition to ram-air it is much larger and the air filter set up is really beautiful. It's a large foam dome over the V stacks. It's really a nice set up. I'm sure Mr. Yamaha tuned the air box to the goals of the motor.
Have you compared the fuel injectors between the R6 and the FZ6? I wonder if they are the same? I'm thinking the duty cycle maybe greater with the R6 ones. Not sure.