I say wait for power commander.. It should be available in few months... They are still engineering it for the grom and it should work 100% right out the box 100% of the time.......I have ejk and its OK for now and it works somewhat.. But I think the load based technology is not perfect for the grom. But if you want something just to slap something on the bike then ejk or bazzaz is good. If it works or not.
Braap
Braap