As has been pointed out, the best way to shake a bogey off your six is never to let him get there to begin with

I fly the 190A8, it doesn't even turn as good as the Dora.
What you have in the 190's is an incredibly quick roll. This changes your lift vector.
Don't just roll back and forth. The average bogey pilot will fly straight as you quickly zig zag in front of him, close range and blow you away.
Roll left, the quickly roll right, and make sure you see what the bogey is doing. And always put some down movement as you roll to fly under his snap shots.
If he is flying straight, keep turning until he does, then roll again.
This will give you more seperation, and get him off balance

Don't just zig if front of him, make him follow you, he can't keep up unless it is another 190. Then you should be able to get vertical in the Dora, and eventually kill him.
If you are low, well you gonna die. If you are flying the 190 right, you will have some alt to now dive down, pick up speed and get out of dodge.