Could be down to the settings on the Dynojet jets and not the brand. I doubt a big aftermarket performance company like them would have jets that don't work.
I'm installing a stage 1 dynojet on my 1100 in a few weeks (slow UK suppliers
), already have the K&N filter and will be gutting the stock pipes too, so will let you know how I get on.
As for the 112mph the bike is electronically limited to 110, so that extra 2 was an optimistic speedo, no speedo is dead on.
What should have changed is your 0-60 or 0-100 time, not by much I'd imagine for the 10 extra donkeys or whatever these 3 mods give you.
Lowering the tone since 1969