Courtesy of Terry, I have some new mufflers on the way. So I wanted to know what part number download is in my ECM, since I never did know in the first place. I got up this morning, putzed around, did some studying, let Renea sleep in, drank a pot of coffee............typical Saturday morning. When Renea got up, I asked her if she wanted to ride up to HD of Columbia with me. She said she did, despite the cold, so we leathered up and hit the highway. Traveling up US 431, we stopped at Honey's Diner in Fayetteville, TN for breakfast. You should visit that diner. It dates back to 1923. Lots of nostalgia in that place. Anyway, we ate breakfast, then got back on the road. We stayed on US 431 through Lewisburg, and turned on TN 99 toward Columbia. When we got there, Renea was a Popsicle. Despite her layers, chaps, leather coat, scarf, heated seat and my big a$$ blocking the wind.............the lady was cold. She was glad when we got to the dealership. She hugged the coffee pot when we got there, bought a new pair of gloves and a neck gaiter..........and stood in front of the heater in the shop. I had Moose hook up the DT to Ol' Thumper, and I finally gained the knowledge for which I've been searching. I have P/N: 34303-06 Stage 1 Race. So, I'm good to go to use the mufflers I'm getting from Terry. I knew it had to be a race download, since I've hit the rev limiter at 6.2K RPM. If you have never been to HD of Columbia.........GO. It is small, family owned, well stocked, and the people are awesome. Great shop. Wasn't the first time we've been there, but at 72 miles from my front door, it is the closest shop besides the POS crappy, worthless, good-for-nothing dealership in Madison, AL known as Rocket City HD. Yeah, I'm bashing them, and they deserve it. I'm certain I'm not the only CVO Harley member who knows about that place. Anyway, we left HD of Columbia and headed home via I-65 to US 31 into Ardmore, AL where we picked up AL 53 to Pulaski Pike. The rest is small backroads to our home. Great ride today............and it was nice to get home and get by the fireplace. BRRRRRRRRRR!