my 98 flhr has started an intermittent popping while crusing at 55 or so. bike has 114,000 miles but ive put them all on it and maintained it well. i started last week and had only done it twice. sounded just like when a plug is fouled or fuel soaked and so forth. never quit running and cleared up quickly. i had a screaming eagle ignition module on it that probably had 90k miles on it. so i swapped it out with my stock one. been riding it for a week or so and all was ok. today it started doing it again and got worse. for like 6 miles or so until i got home. i have true duals on it. so i had my girl hold the throttle at an rpm where it started popping some. i felt both tailpipes and it was popping out of both at almost the exact same time. so,to me that would rule out a bad plug or a bad plug wire. i'm thinking if it were intake gaskets leaking or carb stopped up it would do it more often. battery is fresh. replaced both ground cables last week because the end in one would turn somewhat. havent replaced the postive cable yet. just wondering if any of you could point me in a direction that maybe youve run into this. hate to take it in to the shop yet because it so intermittent. bad coil or wire to the coil maybe? i also dont know much about that veos swith or whatever it is called under the tank. any simple diagnostics that i can run on it? ive got some extra time on my hands to try to remedy it. thanks in advance as always.