I used a set of these reeds in my carbed 2.4 200 and first noticed a smoother idle. I can't compare any performance #'s due to not running stock reeds on this boat. I have spun this motor up to 8500 rpm with a extra 130 HP shot of nitrous actually 80 pounds of it this past summer and the reeds look perfect.
If anything else it's piece of mind not having to worry about a metal reed breaking off and going through the motor, I've seen it and it's not pretty.
Let me know If I can help with your reed upgrade.
