Thanks for the information on the EFI exhaust. It is to me the best looking Enfield exhaust I have yet seen. I was concerned about the review on the nfield gear site, but if that was a one time thing, I guess I will go ahead and get one.
I do understand the issues with loud pipes on highway trips. Several years ago I put some Vance&Hines pipes on my Vulcan 750. (v-twin) they sounded great around town, but most of my riding is done out on the highway. The drone of those pipes was very annoying, even earplugs did not help. I wound up going back to the stock system, and losing a couple hundred $$ in the process. I don't expect the EFI pipe will be anywhere near as loud as those pipes were.