To help you out - check Cobb of Ecutek tuning manuals for Simos 18. You missing quite few important bits. There limiters for flow, boost, chra, temperature and few safety related. Tailoring mentioned you can ask more air and deal with outcome - deviations in fuel trims for your afr target folowed by regular pain about fuelflow, impacts from port flaps, vvl and vvti.
Thank you for your suggestion! I checked again for all the omissions!