We have a brand new 2021 Yamaha MT-09 that we put on the dyno and did some base runs to see what kind of power it produces at the rear wheel as stock.
Then we installed an Akrapovic Full Exhaust System to see what kind of gains we see over the stock run.
The MT-09 has not been ECU flashed nor does it have any other modifications such as air filter etc
Indeed I installed the exhaust + air filter and the results are as good as this people claim.
Now I am looking to flash the ECU, but euro 5 is a hard nut to break. None of the tuners worldwide have anything available.
ECU has been cracked about a moth ago.