ecu help

hello guy. im new to this community so please bare with me. I have a crx that I bought and from what the previous owner told me it came with: d15z1 block y8 vtec head y8 intake manifold with a gsr throttle body and a p07 ecu so heres my problem. my rex shuts off at a stop or when in neutral...

Before you flame me i did search, In other words im not wasting your time, My problem doesn't seem to compare to anyone else's. Well not exactly anyways... So, Fully built y8 has a good amount of acceleration (not bragging just using to compare to performance now.) My bracket for my exhaust...