I can't remember if it was on an older version of the s300 or neptune rtp, but I remember adjusting the duration of the fuel pump prime, I have looked through all of the tabs/settings and cannot find it. The car runs on the test pump setting, but I need to permanently set it to prime longer. thanks.

 

there isn't one. that is on Neptune.

 

besides, the priming is only the duration it pumps when you first turn the ignition on without attempting to start it. if the engine is running or cranking, the pump stays on constant.

if you need it to prime longer, you must have a bad pump or really frickin huge fuel feed lines, or a leak somewhere. and if you do have huge lines that need it to prime longer, just toggle the ignition twice before trying to start it. that'll prime it twice.

 

-10 an lines. multiple priming works every once in a while, but I need it to reliably start. Might just hook it up to constant IGN.

 

if you do that, make sure you cut the wire between the ecu and fuel pump relay, otherwise it'll send power back to the ecu when the ecu is not trying to activate the pump, and that may damage the ecu.