Windshear recovery is solely about Energy Management. The Windshear has the potential to render your current PE + KE inadequate for flight i.e. KE to keep flying leaves PE as underground
The way I see it, your aims:
- ADD as much Energy as possible = Full Power, no speedbrake
- OPTIMISE your KE v PE balance, essentially means keep KE close to, but above minimum speed which equates to max PE (Height) - negative PE is not good for your health
Refinements such as gear up, more flap might, with hindsight, save the day, but you need a simple reliable drill.
If following the FD leads you to have excess speed, either:
- The FD is not giving you the correct Windshear profile = ignore/deselect it, pull nose higher for PE v KE
- The Windshear is significant, and the "gain" you are seeing may well be reversed - it is not a "good" sign