Even on a professionally tuned car, RomRaider Logger over your Openport is how you verify health for free, forever. If you do only one thing in this whole article series, make it this one.
Step 1 — With the Openport connected and key ON, open RomRaider Logger. It speaks SSM to the ECU and auto-detects available parameters. Green connection status and a populating parameter list means you're live.
Step 2 — Build a logging profile and save it. The core health set for a turbo EJ: RPM, engine load, boost, AF ratio, AF correction, AF learn, feedback knock correction, fine knock learn, DAM, ignition timing, coolant temp, and intake temp. Add injector duty cycle and MAF voltage on modified cars. Skip the temptation to log fifty parameters — sample rate drops as the list grows.
Step 3 — Configure output: log to CSV files in your Logs folder with automatic filenames. Set up the dashboard view with the critical few (DAM, feedback knock, boost, AF ratio) large enough to glance at — though a passenger reads screens, drivers do not.
Step 4 — Capture a baseline cruise log: ten minutes of normal driving, various speeds. This shows closed-loop health — trims, learning behavior, temps — and gives you a 'known good' file to compare against forever.
Step 5 — Capture the classic third-gear WOT pull, safely and legally (a highway on-ramp or better, a track day): start logging, roll into third around 2,500 rpm, smooth full throttle to near redline, lift cleanly, stop logging. Third gear loads the engine long enough to show real behavior without silly speeds.
Step 6 — Name and file every log immediately: date-romversion-conditions (2026-07-19-v03-93oct-85F.csv). A log you can't connect to a ROM version and weather conditions loses half its meaning.
Step 7 — Read the pull using the datalog guide in this section (DAM, fine knock, trims). Make the ten-minute log-and-review a ritual after every flash, every fuel-brand change, and every season change. That ritual is the entire difference between knowing and hoping.
Tuning changes engine behavior. Numbers here are typical, not guaranteed — your fuel, climate, and hardware matter, and a professional calibration for your specific car always beats a generic map.