Can u elaborate? seems interesting
The G3 incorporated a number of design changes which suited to it role of long range fast attack bomber that make it very difficult to put back to fighter standards.
1. Cooling gills were not adjustable and were constantly open creating more cooling drag.
2. Cowl MG's were removed along with outter wing cannon.
3. Intake was wider to accomodate increased cooling requirements for hauling ordinance long distances creating even more cooling drag.
4. Junkers, Messerschmitt, and Focke Wulf hardpoints created even more drag.
EB-104 had a rated engine and was one of the few the allies actually bench tested for power. It's power development was over 100 hp less than a BMW-801D2 in Luftwaffe service according to it's power curve.
Because EB-104 was too light it climbed much more steeply but slower than a fighter varient FW-190. I expect Pyro will match the German curves meaning the climb rate will decrease and speed increase.
Low altitude speed will increase while high altitude FTH speed will decrease some again falling into the Luftwaffe data.
Turn rate will improve coming very close to the sustained rate of the F6F-5 Hellcat. Instantaneous turn rate will improve not as result of the FW-190's drag profile but due to it's lift characteristics. Pyro has copies of the FW-190's lift polars.
I suspect it's roll rate will improve somewhat over RAE 1231's measurements as well since that report represents an FW-190 with out of adjustment ailerons.
All in All some tweaking which will bring the 190 in line with the correct Luftwaffe data making a much more accurate representation of the design.
FW-190G3 performance compared to a fighter varient:

Hope this helps!
Crumpp