I was woundering how much would it be to put in nitrous system and tune the car?
I got a 99 Civic EX.

 

why nitrous lol

 

you can usually find a good used kit for 2-3 hundred dollars or a new one for 5-6 hundred and tuning all depends on the size of shot you want on most motors you can shoot a 50shot with no dyno tuning just retard timing a little if you wanto to shoot more than that dyno tuning usually costs between 1 and 2 hunded an hour