No, that's not what I meant to imply. The TBS needles are richer than the stock, the Thruxton are even richer. This is due to their tapers and length. It's like changing needle clip positions (shims in our stock setup) and they allow you to "adjust" the point of rise and flow of the fuel in differnt throttle positions. The EPA made this necessary by having trump put the nails in the stock carbs. They just downright suck in my opinion. (The needles and the EPA)
The main benefit would be the elimination of the mid range waver in hp. The Thrux are more extreme than the TBS. It's kind of a shell game. Try them and see which ones work best for your particular bike. Since there seems to be huge variations in these carbs and setups on eveyone's bikes, you should try both to see what is best for you.
If you get too rich, you can play with the main jets to dial the needles in better too. There are a lot of good references out there that show exactly where the needle taper comes into play. If you find the TBS are better for you, or vice versa, then I'm sure you would have no problem selling the other needles here to get your money back.
Mind you, all this is mostly for the really anal tuner, you can get your ride to run just fine without all this dicking around too. I just like to play, I know how to, so I do. Just a personal thing.
