Adder

Nexus Series Firmware Help › Vehicle Functions › Aux LimiterUpdated Sep 2026

The Adder decides which cylinders the Aux Limiter cuts and in what order. Pick the right value for your cylinder count and the limiter cuts smoothly and evenly. Pick the wrong one and it stumbles.

What the Adder does

When the Aux Limiter is cutting cylinders, it doesn't pick them at random. The Adder is a number that sets the pattern the cut moves through. Some values spread the cuts evenly around the firing order, which gives a smooth, consistent limit. Others bunch them together, which feels rough and puts uneven loads through the driveline.

The Adder only matters when the Cut Type is set to Cut Off. It can be mapped in 3D on an 8x8 table, but for most setups a single value suited to your cylinder count is all you need.

Recommended values

CylindersAdderCylindersAdder
11517193
21518179
31879191
414710197
519811201
619712207

The further you move from these values, the less even the cut becomes. We start with the recommended number and only change it if a log or the feel of the car shows a problem.

How much gets cut is set separately by the cut percentage, and where the limiter kicks in is set by the Aux RPM limit. For switch and input assignments, see Aux Limiter wiring.