We could see over 1000bhp this year with no tokens in play.
Well that's according to a report by the editor of Grandprix247.com.
Renault have already signalled they are going ultra aggressive with engine development now Ferrari are pushing on hard as well. Wonder if Merc has as much room to respond, or are we in for closer racing? - I do hope so.
This is all helped by the extra fuel allowance of course, but even then will they be able to run at full power for more than part of the race?
Perhaps the biggest gains for Ferrari will be in the power unit designated 062/1 which will be very different from that of 2016.
On the cards is a total redesign of the combustion chambers including a multi-jet ignition system as well as major changes to the electrical elements and energy harvesting systems of the power unit.
Insiders reveal that Ferrari are targeting power levels exceeding 1000 bhp or around 50 bhp more than Sebastian Vettel and Kimi Raikkonen had on tap last year.
It is also important to remember that in 2017 there will be no token system to restrict power unit development, thus during the course of the season engines are set to improve on a regular basis.
Exert from longer piece, courtesy Grandprix247.com, Mon 2nd Jan.