ok i have a 91 crx si and im swap everything from my si rex to my hf crx i have because shell on si is bad but i need to know what i need to swap the d16a6 for the si into the my other rex with the d15b2? do i just need the motor harness from the d16? will it bolt on to the other rex main car harness with the d15 because theres a extra plug on my d16 main harness that the d15 dosnt have? or do i need to change the full car harness? thankz

 

Search man, search.

I'll give you a hint. "MPFI swap." How will you ever learn if all you ever do is get answers spoon-fed to you?

All the information is out there, it's been covered well over 10,000 times. Put in a bit of effort next time and you'll be amazed what you find.

 

if its an hf crx you're putting the d16 in, you should only have to change the ecu to a pm6, i think. because the hf is a multi point 8 valve if i'm not mistaken.

i don't give the best info, someone will pick this up, and point you in the right direction.

 

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/88-91-crx-ef-civic-frequently-asked-questions-faqs-1508680/