My 5c is that it isn't worth the money to upgrade the charger if you have an 16T, instead go for the pump upgrade and ECU reflash, the kit called MCX310, 290hp is no problem then. If you but an Apex kit this year they all have the 19T, it's not an "upgrade" alternative, It's only MCX thats been kindly enough to include a charger with a little more capacity if you want's to run with some higher octane fuel, 19T bottoms out ~30-40hp higher then the 16T does.