First time AP user. Installation was 3 minutes, plugged the AP in on the 16 WRX, loaded the Stage 1 OTS map and was off testing it out in 5 minutes. This is by far one of the most needed tools for your vehicle. Not only can you upload multiple OTS tunes from Cobb, but custom tunes within 30 seconds.
If your wondering why spend $650 when you could get a pro tune for cheaper, the best answer is having to be a beginner and slow modding with this is great. Even for experienced modders this is great. Having multiple tunes such as your pro tune on 91, 93, race gas tune, and e85 tune all within a few clicks and 30 seconds of time. Not only the quick change in tunes but a full on display of your cars performance, check engine light diag, flat foot shifting, launch control, anti-theft mode.
Coming from the stock tune to the Cobb Stage 1 was like driving a new car. The pedal wasn't so touchy, the power was spread out through the RPMs and didn't die at 5k. Offers multiple tunes out of the box to support intakes, and turbo backs. Just a great purchase all around.