i just installed a timing retarder elimintaor from ivansperformance products.com it makes the throttle response much better than stock and makes the whole bike smoother to ride. throtle response feels almost instantaneous now compared to stock. its easy to install and well worth the 70 bucks it cost. my install went like this remove steering damper, remove tank, and airbox, seperate green connector on left side of fuel rail and remove two wires out of the connector and reinstall in supplied connector plug in t.r.e reinstall tank and airbox. the facotry ecu retards timing in gears 1-4 this part restores the timing where it should be. this was a great mod for the money and if you can remove your airbox yourself and save labor costs its even better i highly reccomend it.