I have purchased a B16A2 enigine to be swapped in to my 95 civic coupe which has a crumby 1.5 lsi engine.The thing is I want to modify the B16A engine before it goes in and I want to achieve as much bhp and torque gain as possible. I am asking you to help by letting me know where to start, what mods to get and what gains they achieve. I especialy want to hear from you if you have modified the B16A engine yourself. Your help will be much appreciated.

 

Here is the b16 all motor thread, I hope this helps.
https://honda-tech.com/zero...age=1

 

if you want to gain as much as possible just add boost..
depending on how much you want you can stick with stock internals and be ok, just dont boost much past 7 psi..