I had the AEM EMS, and even though I liked it for a lot of reasons, I was disappointed in the idle quality and slow start-up. I'd like to go with Hondata, but there isn't a local tuner in the area so I'd either have to road trip to get tuned or get all of the auxilary equipment, learn the software, and tune with limited support (I do have a dyno available). A somewhat local tuner (100 miles away local!) is pro-accel. He likes to use the DFI, but I question whether I'll run into the same idle, a/c, and slow start-up issues that I had with the EMS. If you have any experience with the DFI please give me your input.