Well the problem with a piggy back is that when you buy one system, you end up finding another one that does the same thing and has aux ports. So you know your gonna have to buy multiple piggyback ECUs, it's a never ending curse, where as if you find the biggest baddest stand alone or piggyback for $2,000 - $4,000 you'll be ahead of the rest of the game.

But we are still learning, so you have to start somewhere.

I wonder if there is a piggyback for the Brake/TC/ABS system, now that would be really cool. I wonder if one could actuate the electronic cutting brakes for certain lateral G mapping, make it more/less sensitive at different levels of force, now I want that, can Tuner tools provide this option? Pretty soon we'll be handling like an F1 car, lol.