01-16-2025, 09:29 AM
I have a Tuono 660 Factory (more upright comfortable version of the RS 660)
Other than cosmetically- I have left stock.
Unlike the CB1100- it didn't come from the factory choked off- it's rated at 100hp stock from 660cc
I've watched while people have changed to many other exhausts for these bikes...and they only make a couple hp. No need.
I also don't like the look or sound of any of them...so not worth changing the exhaust to me. Sure they drop a few pounds.. but I can diet if I cared that much.
But then one of the Aprilia tuner shops came out with a variable intake stack kit.
One of the issues with these bikes is a dip in the mid RPM range.
This kit appears to fix that, as well as gain some power in a usable area.
Here is a dyno sheet of a stock bike compared to the stack kit and tune.
![[Image: 0e55086d7aa7306a5c99e42a42e90133.php?att...1717875848]](https://cb1100forum.net/forum/uploads/imp/202501/0e55086d7aa7306a5c99e42a42e90133.php?attachmentid=457110&d=1717875848)
![[Image: 6d1c2903981b7788461a69fd65bbb39a.webp]](https://cb1100forum.net/forum/uploads/imp/202501/6d1c2903981b7788461a69fd65bbb39a.webp)
And here is a youtube clip-
https://www.youtube.com/shorts/l3e5h_Kgzbg
Other than cosmetically- I have left stock.
Unlike the CB1100- it didn't come from the factory choked off- it's rated at 100hp stock from 660cc
I've watched while people have changed to many other exhausts for these bikes...and they only make a couple hp. No need.
I also don't like the look or sound of any of them...so not worth changing the exhaust to me. Sure they drop a few pounds.. but I can diet if I cared that much.
But then one of the Aprilia tuner shops came out with a variable intake stack kit.
One of the issues with these bikes is a dip in the mid RPM range.
This kit appears to fix that, as well as gain some power in a usable area.
Here is a dyno sheet of a stock bike compared to the stack kit and tune.
And here is a youtube clip-
https://www.youtube.com/shorts/l3e5h_Kgzbg