Just last month I bought a shift kit for my Dodge Magnum. You tap into the two communication buses and into the transmission control module. I bought it to firm

Just last month I bought a shift kit for my Dodge Magnum. You tap into the two communication buses and into the transmission control module. I bought it to firm up a sluggish automatic transmission, but the guy recently added a firmware update that lets you do a 'line lock' -- effectively, it tricks the car's computer into thinking it's lost traction, locking -only- the front brakes... until your speed is > 5mph. He added it for 'perfect burnouts' - something I have zero interest in doing, but it's pretty wild that he's got programmable firmware that has that much control over the safety-robot bits in my car.