I had my ECU re-flashed by ECU Unleashed with the higher rev limit and didn't have any problems, though the rev limit only went up about 400 rpm to 13.5k. I can't say how much power it made, never had it dynoed but it ran good. At least until the rings/cylinders were so bad the engine didn't have enough compression to start. It also burned about a quart of oil/track weekend. No more Hondas for me...
you still have the 08? did you get a compression/leakdown done on it? 400 rpms isnt a lot but it can/will cause issues. you can go all the way up to 15k with springs, but the crank dont like anymore over 14.5k.
Being right is bitter-sweet when you're ruled and surrounded by morons.
"Men fight for liberty and win it with hard knocks. Their children, brought up easy, let it slip away again, poor fools. And their grandchildren are once more slaves." - D.H. Lawrence