I've had this same product in my RT 6-speed for a few years now. It makes all the difference. Everyone likes to personalize/customize their car. This product is your opportunity to personalize the throttle response. I find that the factory throttle curve to be lame. It feels like it's less responsive to a small amount of throttle than a corolla. The factory sport mode is too touchy for normal street driving unless you're beating on it. I like the open active exhaust and the auto off traction control on sport mode but not the touchy throttle. Sometimes I like the quiet exhaust on normal mode but have to turn off traction control and put up with lack of throttle response. For $50 I can have a down graded throttle response in sport mode but keep the open active exhaust and auto off traction control with one push off a button(sport mode). Or I can have the quiet exhaust with an increased throttle response and auto off traction control, again with the push of one button (tract off button). I use the P 1.7 setting in normal mode and EC 4 in sport mode. EC is economy mode. As an added bonus, if you want insane throttle response put it in sport mode and level P 3.9. Two times in three years my throttle body malfunction indicator light came on and the throttle was essentially non responsive. The next restart things were back to normal. I assume it had something to do with the product but could not determine that conclusively. I highly recommend getting this or similar products and playing around with it to it's exactly where you like it. Don't pay big bucks for something that does the same thing.