The tempest is an extremely capable fighter and a formidable opponent. It has just about everything it needs in spades to provide a tough challenge for most aircraft with the exception of sustained turn performance. The tempy actually rolls fairly well, not like a 190 or spit 16 or F4u, but well enough, and much much better than a tiffie.
Your best bet is to get it slow and into a slow-speed turn contest where it wallows. I dont just mean an endless one-circle tail-chase necessarily either. Once slow and turning, the spit will eat it alive. Even at moderate speeds the spit will trump it.
The spit is better in a dive too, IMO, with better control authority at high speeds. Ultimately the temp will be much faster than a spit at all alts, so chasing one or running from one is not a good idea.
Another tactic is to use its speed and lower roll-rate against it by letting it pounce on you with lots of smash. You can set these sorts of situations up, and most temp drivers happily ablige because they think they're safe BnZing you. You will be looking to stay out of their guns (4x20mm = deadly) and force an overshoot by changing direction faster than they can - scissors or barell-roll defenses work well here. Dont turn too much, just enough to get out of plane and ahead of their guns before rolling back around onto their overshooting crate, if done right you will get a shot opportunity or even can follow up and knock em off their perch if the speed differential is small at that point. If done right it's very effective and even if you dont get the snapshot or follow them up, your bleeding their precious speed and E, and getting into the spits preferred envelope where you will own them unless they tuck tail and run - in which case you can take it as a moral victory.
