Planning New Build

[seeodywhy]

Hi everyone. I know I don't post here very much. I had an hf vx swap that was great till I got rear ended. I wound up buying a 2001 civic ex but I really miss the economy. I got my hands on a 96 civic hatch shell. I am definitely going to got a jdm engine with a vx trans, lightweight flywheel, hx rims, and some things to hopefully make the bottom of the vehicle more aero. I would like to gather some opinions on whether it would be better to run an hx ecu or the p2j. Is there a way to tell which would run the leanburn more aggressively?