I have a '97 Honda Civic DX automatic and I just bought a '97 Acura Integra LS five-speed manual swap with the ECU and wiring harness ... I replaced the engine a year ago after throwing a rod ...

I touched a real-world 50 mpg in an '84 CRX with the 1500cc CVCC engine— not the ridiculously stingy HF model, mind you— and it wasn't slow. But… well, just look at this diagram! Honda was ...