what are the differences between a Si and a Hf wire harness? they are both mpfi harnesses basically what i want to know is if i get a crx Hf can i drop a d16a6 or a Sohc Zc and a pm6 in it without having to do any wiring??

 

you will not have a problem putting in either engine with the hf harness. hf harnees is basically the same as an si has a plug for the egr. good luck