tool46n2
Husqvarna
AA Class
just my $.02 but for less than the price of the Arrows you can get the FMF Powercore 4, a Power Commander V and auto tune. You don't need a different/better ECU because the PCV and Autotune will do that for you. Plus you have the flexibility of making any modifications you want and the Autotune will always adjust accordingly. Overall cheaper, lighter and more flexibility.but how much of that can be contributed to by the Arrows ECU ? Have you run the FMF with the Arrow ECU ?
And BTW, the Arrow ECU is only tuned for those pipes, it will not not improve the performance of the FMF...maybe a little but still not designed to make the most of the FMF can.