I have an 04 wr450 properly jetted, free mods, fmf ti powercore slip-on with quiet core and I'm going to buy a sx powerbomb header for more grunt. Question is I'm thinking of putting in a power now at the same time and I wonder if it would just be a waste of money or if it really improves the snap as much as advertised. Also, Twin Air has a new power blade out and and I'd really like to hear from anyone who knows if this is just a copycat power now or an actual improvement. Thanks for any info! P.S. I did a search for this and read a few comments about the power now but found nothing anywhere about this new twin air powerblade.