Did some more riding today - I will repeat my earlier post in saying this little device does not make the bike "dangerous" ... my last bike was a 2007 Yamaha 1700 Warrior V-twin ... 1670cc torquemonster , that was a wheelspinner, and it was not restricted ... so, I could be a little biased. If you are used to a 600cc low compression scooter or less, then yes, I can see you being shocked at the better throttle grading that this provides in the sub 5k rpm range. It just makes the power delivery match what your right wrist is asking in the lower two gears, thats it, no raging bull surge that induces uncontrollable wheelies or unintended wheelspin. It IS a worthwhile mod however. Today I rode 20 miles or so and I dropped down to first gear going 15mph or so and cracked it and it did pull the wheel up a few inches, but I've done similar small wheelies before the z-bomb thing, it was just easier. Point of the story is, if when you ride your bike you like to crack it in second on twisty roads like I do, then get this little booger - you won't be watching the tach waiting for that 5k rpm spot to pop up. Also perform the flapper mod for the muffler and let the bike sing through both outlets from idle - 10k+ rpms and the bike just feels correct, not EPA'd / Safety committee approved and dumbed down. Hard to believe Honda markets this as a sport bike made for touring but wants to restrict it like mine used to be, I was expecting more grunt down low, it simply is not dangerous unless you weigh 100lbs and suck at riding ;)