PowerFC injector size setting.

[JimX]

Before I even decide if I want to attempt a road tune myself, I will need to set the correct injector size when I put my 550cc injectors in. I'm reading the relevant section in the manual, but there's a case of too much information in here.

The basics seem fairly straightforward. 370/550=.6727, so I assume I just stick 67.3% in the Fr-Pr field. But where do I find the injector lag time? I also presume the secondary injector field isn't relevant to me, so do I leave it the way it is or make it the same as primary, or zero it out?

Also are there any other settings I need to change along with the above settings, such as cold cranking or water temp correction? Or are they all ok to leave as-is once I set the above properly?

[Steve]

JimX, I just used the injector correction in the' ign/ijn' function in settings menu. This is not perfect, but it allows you to drive the car, then get it tuned ASAP. WORD OF CAUTION, this setting is temporary, and must be re-entered whenever you restart the engine, as you will probably find out, cos mine just didnt run without it:)

The 'injector' function in settings menu is used to correct the injectors individually so the car can run in closed loop etc on the road, and should be adjusted when the tune is being done. You cant just change those settings and drive away happy.

This is what I found, and what I was told by a mech mate.

The primary and secondary settings you talk of are for RX7.

[JimX]

Ah ok. Yeah I'm starting to notice some discrepancies in this RX7 manual to what I see on mine. Like the 4 boost settings instead of 2. I will do as you've said once I put the injectors in. Thanks!