The Corrections node under Fuel Tuning in NSP is a switchboard. It lists the fuel correction tables your Nexus ECU can use, and you tick the ones you want. Each correction you enable adds its own table under Fuel Tuning > Corrections in the tree. Anything left disabled stays hidden and has no effect.
You'll use this screen when you first build a tune, and any time you add hardware that brings a new correction with it, such as a flex fuel sensor.
What to check here:
- The corrections your engine actually needs are on, typically air temperature, coolant temperature and post start.
- Nothing is enabled that you haven't tuned. A forgotten table full of default values can quietly skew your fueling.
- When hunting a fueling problem, look at which corrections are active before changing the base map.
Need this diagram? Ask us and we'll send it over with advice for your build.
