Proper Key switch TPS re-set for any 2008-2009 +IS AS FOLLOWS! Turn on ign., or-also called kill switch,first. Then turn key to on(do not start the bike)gauges will pulse(sweep)while this is happening Turn throttle to wide open (slightly firm)To closed throttle(slightly firm).Do this only 3-fulltimes! Then turn off key switch only.After turning off key switch ,then turn off your kill switch last.Then proceed to start the bike Key switch first then kill switch to ON position let fuel lite go off & start your bike .Please Do NOT touch the throttle at all.Let idle for at least 3 mins., if bike was hot. Let idle for ABOUT 5mins.,if Bike is cold as in sitting for at least 1&1/2hours.after warm up gently & smoothly twist throttle several times going up in RPM range to about 4000rpms.That should do it.! If by chance it Spits OR coughs ,Start over let her sit shut down about 1min.Also you should RE-set TPS every time you fill up! W/premium fuel, I know prices suck! I myself use 110oct. true racing fuel from the Racing shop here in Jax.FLA. 1/4 cup every 3rd fill up . Plugs look great/runs a little better too! BTW theres no set screw for idle on 2008+XBs.Good Luck.