i have a 1991 civic hb just bought it and i redid all the interior and put custom sound system in but it is slowwwww it has the stock 1.5L in it with cold air intake and some kind of exhaust im pretty sure the next thing i need to do is put a header on it im eventually gonna change the engine out but this ones only got 50k miles on it so i just wanna give it some go for now anybody know what steps i should take?