What conditions cause secondary injectors to turn on?



Thanks

they activate when a certain air pressure is reached. like lets say .5 psi over ambient air pressure. I have no Idea what pressure they activate at but thats just a way to explain it. with a standalone you can tell them when to come on..like at 0 manifold pressure or 1psi etc. that exp works with turbo engines. N/A i'm not sure myself.

stock they turn on at 3800, or 3500 if over 1 psI

Where did you get 3500?



From Henrik (rtek ecu designer):





For the stocker, secondaries will come on:

- above 3800 rpm with more than atmospheric pressure in the manifold (ie boost but relative to the atmospheric pressure sensor reading).

- above 5600 rpm regardless of boost or not