Turbocharger, actually. And it starts dying off about 29-30k. By the time you're 30-33k you're losing power. Still, the jugs are some of the better-handling planes at that alt.
As for folks saying the 110G stock has less firepower than a 190A8, this is just wrong. All is more than made up for by ungodly amounts of 30mm. Even if it ONLY had the 30mm, nothing else, it would still have several times the firepower of the A8 with 30mms. It will be able to sustain fire longer, kill more, do more damage with any snapshot. Think of it as a slower 262 or 163. The K4 has the same gun, the A8 has the same gun, but their firing time is very short at 65 and 55 rds per gun. Ta152 is better at 90 rpg. The 110 takes the cake amongs all props for mk108 ammo loadout.
The problem is the performance. It's often too slow and has too low a ceiling to get up to the stubborn bombers. If you get anything close to your alt or even below, it is the best. You also can limp home on 1 engine if severely wounded.
The 410 might edge that out if it could mount the historically accurate MG151 gunpod externally. If it had 8x 20mms, it would be a contender. With the BK5 it definitely outshoots the 30mm, but aiming and position are difficult and it's only slightly better than the WGRs at the sacrifice of better gun packs. You run out with the BK5 and you're stuck with 2x20mm. Boucou ammo for them, but only 2 of them. Not so good for fleeting snapshots.
Just some additional food for though.