When I picked up this blaster it had a FMF fatty Gold and PowerCore 2 silencer, stock carb, stock main jet, stock filter, stock everything.
I put rear tires on it, a K&N filter and bumped the main to a #265...
It was a great trail package and had alot of fun low and mids, for sure, as to why I always mention that as opposed to completely knocking the FMF pipes.
Now, once I went with 30mm fuel, new reeds/spacer, open air box, UNI filter, #330 main, cdi/coil and added the TOOMEY B1, whoa, COMPLETELY different bike. TONS of usuable power everywhere, and a whole new top end. Changed gearing to 14/40, and this bike does not compare to what it was before...
Just giving TOOMEY props where props is in order. I know there are alot of quality pipes, left and right bend, especially when you get into some fine head and cylinder work, BB's, etc. But, for good mods on a stock bore, etc, the Toomey B1 is a fantastic all around pipe kit.
by all means, not starting another pipe war, just commenting for Toomey personal feedback...