I am wondering about two possible explanations for the mysterious abbrevation 'TP'... one is being it stands for a 'trop'(ical) version, the other possibility I can think of it's a code for the manufacturer of the engine..
Were any German manufacturers of the DB 605 engine under license and having the manufacturer's code 'TP' ...?
Kurfürst! - The Messerschmitt Bf 109 Performance Resource Site
http://kurfurst.allaboutwarfare.com/