S-AFC and Injectors

[1997 Eclipse]

When upgrading injectors, does the S-AFC adjust automatically or does it have to be done manually?

 

[steve]

You manually adjust the SAFC to have it lie to the ECU that less air is being metered so that the ECU will shorten the injector pulse width to give you less fuel.

Steve

 

[1997 Eclipse]

Steve,

As I am going from 550cc to 660cc, all I have to do is change the correction at Low and High throttle? Nothing else?

Dan

 

[steve]

What were you using with the 550's?

I haven't installed my SAFC yet. I've been tuning with my fuel pressure and boost so far.
As I understand it, dialing in the percentage difference get's you in the general area but because of differences in things like injector dead time you still have to tune for your setup.

There are several write up on SAFC adjustment on the net. Road Race Engineering has one you might want to read.

Steve