I have a 92 civic DX, my last engine blew and I did not have the B-series funds, but needed transportation so I replaced my d15 with a d16z6 out of an EX.

I have an AEM intake, DC sports header, 5 zigen exhaust, hi flow cat, just the basics done. Now I am adding a ZEX system.

What should I due next to get the most power from the current mods, and add new power? And with what is currently done is the 65hp jet safe to use, or should I stick with the 55?

Also other then upgrading my sparkplugs, wires etc. What are good things to protect the engine from damage? Engine has about 70k on it.

Thank you for any help and suggestions.