Ok, i did an engine swap in my 89 civic hatch...i had the 1.5 not multi-port fuel injection...and switched it with the 1.6 d16a6 out of a CRX Si...with multi-port....do i need to change the fuel pump for this setup? Im thinkin i do...but im not 100% sure.

 

It's not necessary to change it for that swap. If your pump is old, you might want to upgrade to a newer one and while you're at it why not go with a GSR, ITR or 99-00 Si pump? It's a pain to change them in the 88-91 models since you need to take the gas tank off to get the pump out.