Never modded the 2 I had with a TRE, seemed to go pretty well as standard.
There may be a few others on here who will answer your question with a different opinion, I would personally suggest, if you haven't ridden the 05 ZX10R before, take it out for a good run and get a feel for it to see whether it warrants your additions
The 05 10R engine is sweet and manic if your a little heavy with the right hand, but you have owned the 'Busa' so you know what fast is!
I think the difference is the 05 10R feels raw and rapid with it, treat it with respect and skill and you will be richly rewarded.
I posted a video on here the other day of a trackday at Prestwold on my standard 05 10R, have a look, There's no doubt loads on You Tube, but I think you will get the jist of what I mean.
First & Foremost, welcome to the exciting world of ZX10R ownership, there's a lot of lads on here that live and breath the 05 and will help you out with advice.
Ride Safe & Enjoy
