few questions SAFC

[RYanR31]

ok just a few questions: when tuning a piggy back computer for example the SAFC, do they allow for ignition timing advance from the standard computer when modifying the air/fuel etc. also when i do the sensor check on my SAFC the throttle postion shows around 0.500ish volts, when my throttle is not touched should this read zero or is there an amount of voltage there all the time? or should i adjust the thottle position sensor so it reads 0v? same with the air flow metre readings...always jumpin around even with just the ignition on not started. thanks

[ed]

No they do not alter ignition timing at all.

[Birnie]

Did you get the instructions? Pretty much tells you how to set it up.

I used to have one and there was a throttle position set-up section.

Plug in a value with foot off/on and figures it out form the voltage readings with those 2 points.

As ed said, no ignition timing.

The only thing it alters is the air flow signal.

[RYanR31]

there was also a blue wire in the loom which it says nowhere what its for

[ed]

That might be the output wire?

[RYanR31]

output for what exactly

[ed]

whatever you want.

water spray, shiftlight etc.

[RYanR31]

ok so does this provide a 12v current or an earth to switch something on..where is the function on the SAFC to control this if this is what it is? sorry i havent read anything like this in the instructions

[Busky2k]

The blue wire is for a 2nd AFM for the likes of a GTR etc.

Also the Throttle should show approx 0.5V when closed and ~4V when fully open. So yours is fine, so dont adjust!

[ed]

so SAFC 1 doesn't have output?

[ed]

Here is the wiring for SAFC

http://www.apexi-usa.com/productdocumentat...s_safc_wire.pdf

I think I mixed it up with RSM as I know the RSM has output.

[Cubes]

I've just dummy wired up an SAFC to adjust the TPS.

Thanks for the voltage settings Busy2k..

Mine were way out. (reading .2v closed throttle)

I would imagine this would cause the O2 sensor to run in closed loop under harder acceleration.