Hey guys I'm new to this site. I'm looking for some cheap/bolt on h.p. for my Prelude. I race it on a 1/2 mile dirt track in MN so I'm not too worried about idle or fuel mileage. I may be thinking old school here, but does putting a larger throttle body help and if so how large with out increasing the size of the injectors? What about a cam swap and what type/brand. I also race a 90 Acura with a B18.

 

I would do the basics. Do your headers, a lot of them can add 10-15hp as well as adding better cold air intakes can add another 5-10hp Changing spark plugs and just doing general maintenance can add 10-20hp. If you have a H23 then you should already be pushing about 150whp so just doing that minor stuff should get you about 180whp without a problem.