I wouldn’t go out on a limb and say that it’s completely 100% untraceable because nowadays, I wouldn’t be surprised at all what they can actually still see. And not only that, since these pedal enhancers can be notorious for setting off the check engine light for your electronic throttle control and if the dealer was to see a whole bunch of those codes like that they could assume something was up because yes, even codes that have been cleared, they can still see the history of them. I know this first hand because the last time I had to take my 2008 in for whatever the heck it was, I could see on the guy’s iPad screen once he hooked up the wireless dongle to the OBD2 port and it showed a list of every time the check engine light has turned on.
But I wouldn’t get discouraged about that if you’re really interested in one of these because nine times out of 10, the only time these things really mess with your check engine light is if you try to make a change to it while you’re driving and you’re actually pushing down on the pedal or if you try to use the eco-mode in the unit where it greatly reduces the sensitivity to a level that could make your computer think your electronic pedsl’s going out.
I actually had quite a few issues with the one I had but I’m really starting to think there was something wrong with it internally.
All it does is just make your throttle pedal a lot more so sensitive. There’s not any power or anything added to it.