I know that cutting the pink wire raises the rev limiter rpm to 13.5K. Not necessary for me - won't ride it there. I hear it also changes the ignition curve to the R model specs. question is - how does this affect the performance of the bike? Just trying to see if the mod will suit me or not. For background - I went with 42/152 jetting with the snorkel top off and the guts cut out of the hole. I left the 3 uprights in case the next owner wants to go back to stock. I gave it the RandD flex jet but it's fine at 2 turns out. I was determined to leave the stock can and baffle in but it sounded really bottled up - so I took a chance and drilled the baffle. Negligable change in sound level, but the engine just sounds and feels better. I exchanged the 4.8 stock shock spring for a 5.5 (for my 200 pounds) and the rear AND front feel more plush even though I haven't resprung the front. The 5.5 gave me 25 static and 100 rider sag. Couldn't get anywhere close with the 4.8. I know heavier springs up front will plush it up even more. Bottom line - I'm modding, but only the bare minimum stuff. I won't cut the wire unless it buys me something.