ok i just got a crx with a b16 and bolt ons etc. and it runs really good and moves nice but im still on stock ecu so i get a check engine light when i rev past 6k and i have a fuel cut off at 120 so what ecu should i be looking into to get rid of all that and gimme some power?

btw i'v been a nissan guy for years so sorry if i seem to be a little lost...this is a whole new game for me