Dude i know of many bolt-on superchargers for civics. Although
they give u instantly more power and easy to install, dun just
think about your engine’s lifespan. U gotta think about your
clutch, your bearings, your pistons, your engine seals, your
camshaft, all will be put under higher pressure. Fuel consumption
will go up. Unless you’re willing to spend the money to replace all
these parts by more performance type, then go ahead. If u calculate
all that money spent, u can just buy a Vti with vtec already. Wat
for go and put a stupid supercharger? Unless u going to drive the
car for one year more than scrap or sell, i wouldn’t recommend
modifying your car this way. Its all a chain effect. U change one
thing, it will lead to changing something else, and something else
and in the end you gonna spend a whole load of money. Save the
money dude. That bit of power is not worth it.