I have a d15b carb engine.
i want to know if it is possible to swap my intake manifold, and put in a fuel injector system, if that is possible. and what are some of the consequences if any?
Yes, it is possible. Use a Civic Si for your parts, or just go to this site. :
www.4gcivic.net/wp/mpfi/html I feel it would be worth it if you can find the parts fairly cheap(Ebay, etc.)It mostly involves swapping 6 or so wires around from the ECU and running wiring to the 2 new injectors. Do you have a true carb, or do you have a DPFI? There is a difference!
DPFI is dual point fuel injection
MPFI is multi point fuel injection
I'm not sure about the car to MPFI, but I imagine it is possible if you get the same parts.
I suppose it is best to start out with a fairly inexpensive motor to replace if something goes wrong. I would like to have a B-series, but it's $$$ I don't have. And what you learn on this motor will help you in the future! As far as your carb goes, stephanweaver, I would check that site out and ask around if it's possible, but I don't see why not.