What the air pump function does
Many factory engines use a secondary air injection pump, which blows fresh air into the exhaust so leftover fuel burns there and the catalytic converter heats up faster. Running the pump puts extra load on the engine, which matters most at idle. The Nexus Air Pump function turns it on and off inside a window of rpm and load you define.
Settings
| Setting | What it does |
|---|---|
| Disable Air Pump on Decel | When ticked, the pump switches off while the vehicle is decelerating |
| Idle Delay | Gives the idle time to settle before the pump adds its load to the engine |
| Hysteresis | A time delay between the enable conditions being met and the pump actually switching on |
| Min RPM | The pump won't run below this rpm |
| Max RPM | The pump switches off above this rpm |
| Max Load | The pump switches off above this load |
The idle delay and hysteresis both exist to stop the pump from upsetting idle or cycling rapidly. If idle dips every time the pump kicks in, lengthen the idle delay. If the pump clicks on and off as rpm or load hover near a limit, increase the hysteresis. Wiring details are in our air pump wiring article, and Elite users can see the Elite air pump article.
