My wife's sportster has the SE slip ons and SE Stage 1 air cleaner. We originally went with the HD download for these components. The bike ran lean even after the download. I then tried the X14iED leads and experienced a very small increase in richness. Finally I installed a Fuel Moto Micro Tuner that I got from them while they were running a sale. It came with an appropriate map installed and has worked wonders on her bike. Smoother running, better cold start running, and less heat and better power. Cost less than the download too. I hope I don't sound like a shill for the guys at Fuel Moto but when something works, it works.