SAFC on 4efte

[elton]

Heard that no matter how we tune, our engine's fuelling is linked to our ignition, hence the self learning ability of our ECU will revert the fuelling back to its original settings even after tuning the saFC?

 

[Seanmcn]

Doesnt the engine only barely correct itself to fuel adjustments anyway?
but not enough to gret back to standard.

 

[monka]

never heard of this before.

 

[elton]

Doesnt the engine only barely correct itself to fuel adjustments anyway?
but not enough to gret back to standard.

even if it is corrected, it wont be accurate anymore compared with our tuning?

 

[elton]

Of course, an e-manage will be a different story.

The SAFC only works when the ignition is also tuned by ITC>?

 

[elton]

any0ne?

 

[sx_turbo]

no the safc works with or without the itc.

but the safc and the itc together works extremely well, my tuner was really impressed with them for what they were.

in a way i wish i had sorted out my ct9 hybrid setup and sorted the boost issue and kept the engine management i had, see how far i could push it.

 

[sx_turbo]

use a fuel pressure regulator to up the fuelling to what you want on full boost, and then trim the fuelling back down .

you dont use the safc to add fuel, only to take away

 

[RobSR]

use a fuel pressure regulator to up the fuelling to what you want on full boost, and then trim the fuelling back down .

you dont use the safc to add fuel, only to take away

you only use it to take it away after fuel cut.

 

[sx_turbo]

you only use it to take it away after fuel cut.

so whats different to how i said it then?

 

[monka]

i thought you could add fuel as well on the safc?

 

[monka]

setting the AFC to one of these programs, the user is able to adjust injected fuel amounts by +/- 50%. 12 user defined RPM adjustment points allow for fine tuning in 200 RPM increments. Fuel can also be adjusted for part or full throttle situations.

just found that on the apexi site

 

[kieran.s gt]

i thought you could add fuel as well on the safc?

you can as far as fuel cut but you dont need to add fuel under fuel cut

 

[monka]

depends really.

if you have put a hybrid or td04 etc on, you'll be running leaner, so you can add fuel

 

[fur]

a safc can add or trim fuel
like an emanage the safc is subjected to the same closed loop correction based on oxygen sensor signal, however in open loop (WOT) it doesn't matter and the car will work on the values given by the safc

 

[elton]

use a fuel pressure regulator to up the fuelling to what you want on full boost, and then trim the fuelling back down .

you dont use the safc to add fuel, only to take away

Erm...why cant re raise the fuel without the FPR>?

 

[sx_turbo]

Erm...why cant re raise the fuel without the FPR>?

because you can only raise it as far as fuel cut which is pretty pointles

 

[elton]

because you can only raise it as far as fuel cut which is pretty pointles

meaning if we raise the fuel pressure, we'll bypass the fuel cut?

 

[Sheldon]

so runnning 15 psi on a t3 will i be seeing some gains with an safc II ? i mean whats this about fuelcut etc?

 

[monka]

so runnning 15 psi on a t3 will i be seeing some gains with an safc II ? i mean whats this about fuelcut etc?

could do, as you'll be running a bit leaner with it under standard fuelling.