We've been running Dolbeck tuners, we being my brother and I , for about a year now. Bro duc is riding an 11 FLHTCUI Stage 1 96 in, SE AC, Rhinehart slipons, decatted, 255 SE cams. Last big change was we installed the 255's but that's been almost a month now and we've ridden probably 2500+ miles since. Yesterday we rode approx 65 miles to a local dealers shop to pick up some things, one thing he wanted to try was a new seat, which they let him demo a couple. We put the first seat on and he took it for a test drive. When he got back and pulled in to park he noticed he had an engine light. The seat had been a little difficult to get on so we thought maybe we had wiggled or jarred the ECI connector in someway and threw the codes up. We reset the codes and all seemed fine. We left dealership without the new seat, he decided to keep his, about halfway back home his engine light comes back on and he noticed the cruise control not working. When we got home we checked codes, they were - P0031-o2 heater low/open, P0134-Front 02 sensor open/not responding, P0154-Rear 02 sensor open/not responding, P0577-Cruise control input high. We rechecked connections at ECM plug, checked plug connection at TCM, rezeroed the TCM according to past post, checked ground on battery, checked Dolbeck tuner settings, checked Dolbeck tuner ground, reset codes and started the engine. All good, no codes, running fine, idle good put everything back together and left it for the night. Got up this morning decided to take another 65 mile ride to grab some breakfast. Engine runs great, no popping no stuttering good accelleration seems fine. After about 30 miles I see him throw his hand up in disgust, cruise quit working, engine light back on. We cleared the codes three or four times on the way back home, everytime is the same, ride a few miles engine light back on. Big thing seems to be that even with engine light on the bike runs great but the cruise quits working. We even tried turning the cruise power switch off and him not mess with the cruise set button at all, same thing same codes. Sorry this post is so long but I wanted to give all the info I have. We are going to leave on a trip to North Carolina next Wednesday so we are very anxious to get this solved. Any thoughts?