07 ultra. Installed SE intake filter kit and bought a SERT to download the program for the intake kit / SE exhaust slip-ons even though exhaust is stock. Also subtracted 5% from the AFR for 0% throttle from 0 - 1000 rpm for cooler idle. Did this over a year ago and the bike starts great, idles fine, stays cool at idle, pipes have nice very light black coat inside, runs great and mileage seems fine. The quirk is a single miss / sneeze thru the intake within 5 to 10 minutes of riding after the first start of the day. I would swear it is at the closed / open loop transition while warming up. 100% predictable event after first start. About a 25% chance after a cool down and restart later in the day. This event started about 2 months ago. I am thinking of reinstalling the program I installed with the SERT. Any suggestions as to what may have changed or the cause ???