I bought a i cat device back in 2005 for a 05 cr i had then, it goes between the coil and spark plug in the plug wire. I came across it in my leftover parts and put it on last week. The bike had not been started in about 2 weeks, it always start in 1-3 kicks most thime 2 kicks. after i put it on it started 1 kick. went riding Today first thing this morning first kick it started and all day first kick everytime. it had alittle more throttle response right off the bottom and more mid range but mid through topend is where it impressed me. i had a 2001 once and didn't fill like the 2000 cr had as much top end but now this thing totes the front tire 1st through 3rd seems like forever. I think now they call it a i-boost. just though i would share that.