First of all I'd like to thank all of you for the wealth of info I've gleaned from this forum. After a 20+ year layoff from dirt riding, I decided I ought to let my 14 yr old son experience the joy of the sport, and I got us a couple of bikes. A CRF230f for him and a new 2013 WR450 for me. After purchasing this bike I saw pretty fast that it would be best to jump in with both feet and let her run as designed, so before it had 5 miles on it I added an FMF slip on, the Comp ECU/screw, and picked up the programmer. Just today, I emailed Phil Andrew and obtained his maps as shown on his YouTube vid, and of course I've studied everything on the "Maps" thread here as well. I have a question on Phil's #7 map. I have NOT tried this map, but it looks so peculiar that I am wondering if anyone else has tested it. If you aren't familiar with his #7, it looks like this. -4 +4 -4 +2 -5 +2 -4 +4 -4 +2 -5 +2 -4 +4 -4 +2 -5 +2 Yamaha advises to not increase/decrease more than 3 units of fuel or timing on adjacent 'cells'. This map, at 6500 rpm jumps 8 'units', adding a whopping 24% more fuel and at the same time retards the timing 7 degrees. And reverses it at 9000 revs. Now, I'm a complete newb at this and in fact have just basically ridden my bike up and down the street briefly with the default map and the 'FMF' map. It seems like this map would behave really strangely, but I don't know. Comments?