Tuning fuel tables

Warning:

A lean air/fuel condition will damage the engine. Make sure that you monitor the air/fuel ratio at all times, and abort any dyno run if the air/fuel ratio becomes too lean.

Tuning Fuel at full load

It it necessary to use a lambda meter (air/fuel gauge) to tune to fuel tables. Certain K-Series engines utilize a wide-band oxygen sensor which is useful for tuning, otherwise most dynos are equipped with a lambda meter. It is best to tune so that the air/fuel plot is fairly flat.

Tuning Fuel at part throttle

To tune the fuel for part throttle the aim is to get the air/fuel ratio so that the engine will run correctly in closed loop. Normally the closed loop air/fuel ratio will center around the stoichiometric air/fuel ratio of 14.7:1, so it is best to tune the fuel tables up to column 7 to 14.7:1.