Jeff,

Although I haven't bought the FCR's, yet, I did get the Dyna's and with the stock carb's I noticed an improvement overall. Idle and start were much easier and, as Joe alluded, the throttle response is crisper. I've always been of the opinion that 'tweaking' the ignition system is worth the money.

The other advantage is that I can use 'standard plug wires'.

Cheers