aRAcer doesn't do flashes; they manufacture and sell complete ecus which must then be tuned either with their autotune function (using a WBO sensor) and/or on a dyno. The base maps aRacer provides are not suitable for use until they are tuned to your motor. There is no "autotune" for spark maps, so you'll need a skilled dyno operator to do the spark maps. I have an aRacer Super 2 on my race bike.
Flashes are done by tuners like: ECU FLASHING
. They're a great option if they have already created a map for the set of mods you've got. There are also tuners who will create a set of maps using a dyno, that are flashed to you ecu, which allows you to retain your Yamaha ecu while enjoying the benefits of a custom tune.
I use a Hordpower airbox, which combines an effective filter with velocity stacks: Hordpower airbox,
J.D. also offers flash tuning. There are one or two other options.
Lots of companies are making pipes for the R7. Yoshimura, Vance & Hines, and Graves seem most popular within the road-racing crowd. There are crappy pipes on Amazon if all you're interested in is a louder exhaust.