Some Answers,
Vincente, I think the upgrade will only be for the 170 at first, the 170's now have a different case so the retrofit may not fit 160, just 170's at first, might need a dedicated 160 unit and I do not know about the availablity of that.

Cost, do not know at this time, I just know that it will be worth it. It makes the handling of the engine wonderful.

Fuel, I have been Coolpower 30LS which has 20% oil.

I am only running the high speed needle at 3/4 of a turn out.

Bill