Hello, I'm new to Honda's and I traded for a 1991 EF Civic hatchback with a b18a with like 150k miles on the engine but I'm not too sure about that, Anyway I wanted to know what's a good first upgrade to the engine? (I don't know anything about b-series). When I got It only had a crappy air filter mod and nothing else it seems, there are also REALLY crappy coilovers and a ebay exhaust with a bullet sized hole in the middle of it under the car so it sounds like the most rice thing ever. I was thinking adding either a vtec head or a t3 turbo kit later after adding other stuff, But what do you think I should do? (This is also going to be my daily)