Base Setting Apexi SAFC II for 4EFTE
- Thread starter Hot2K
- Start date
HYBRID
Super Moderator <a href="http://www.toyotagtturbo.
its very simple mate, do you have a wideband? also do you have an ep91 or ep82, as on the ep82 you dont use the throttle settings.
Basically after you have successfuly set the parameters to suit the 4e (all is written in the manual), go into menu 1 & enter Hi-Throttle, then by using the wheel and mini joystick, move along the rpm points and add/remove as necessary.. without a wideband this is impossible though.
One last thing, i would reccomend you get the car to run rich via regulator pressure & use the safc to reduce (remove excess petrol) as its not safe to rely on the safc to increase fuel, as after all, it only modifies the map sensor signal (kind of like a complex fcd).
hope that helps.
kon
Basically after you have successfuly set the parameters to suit the 4e (all is written in the manual), go into menu 1 & enter Hi-Throttle, then by using the wheel and mini joystick, move along the rpm points and add/remove as necessary.. without a wideband this is impossible though.
One last thing, i would reccomend you get the car to run rich via regulator pressure & use the safc to reduce (remove excess petrol) as its not safe to rely on the safc to increase fuel, as after all, it only modifies the map sensor signal (kind of like a complex fcd).
hope that helps.
kon
thank you bro hybrid. i use an EP82 with 4EFTE standard condition.
i already set the parameter to suit the 4E. and i know how to input data to safc II. the problem is i don't know what number/points that i should input to. another problem is i don't have a wideband. that's why i want to know the base setting is. if i know the base setting, i think i will try to modify the base setting on the road testing.
rage
Lifer
there is no base setting. each engine is diffrent. and with each mod the settings can change. you really need a wideband sensor to set it up.
if you don't get one you can take it to a local rolling road and have them set it up for you.
do not mess with the settings without input from a wideband as you can seriously f^%k up your engine
if you don't get one you can take it to a local rolling road and have them set it up for you.
do not mess with the settings without input from a wideband as you can seriously f^%k up your engine
oh i c. so if i have a wideband sensor, what should i do to set it up ? what parameter should we consider the results of the lambda sensor readings ?
here in indonesia, (we live in sumatra island in not so big city called medan) tuner dont know what to do when their costumer wanna go advance with their engine, especially in electrical, piggyback, even standalone. that's why we (me & hot2k) always read this useful forum. and i really appreciate if any1 could help us with the basic setting of safc.
thanks.
thanks.
thank you, epan. keep the spirit to explore our engine. oke ?
350ep70gr
Member +
Not very humilior with the safc mate but dont search for a number to put in there. Every setup is different and a number suitable to an other same car could be catastrofic to use to your own.
Better go to a rr and record your afr by a wideband. Then turn your fuell pressure up to be on the very rich side and then trim the fuel down by the safc to suit your afr targets.
What you wana search when you are ready to go out on the road is
Idle 14,7 to 15
light load till 2 psi max at around 13.
11.5 from 2 psi till the desire boost level.
If you have a standard engine you can go a bit lower on the rich side to prevent engine failure at higher boost.
Before anything adjust your ignition timing and make sure all your igntition parts are top contition.(spark plugs,rotor arm, etc.)
Also monitor det if possible especially if you past 10 psi.
As a side note.. someone else with the same setup or very similar could use the number 30 to achive 13 but you may need 20 or 40 for the same 13 afr target wich means if you use someone else 30 setting you may be 12.5 or 14.5. In the one hand of the 12.5 your car will feel lazy but on the other hand of the 14.5 will go bang in no time.
Are you still interesting for someone else settings?
Chris
Better go to a rr and record your afr by a wideband. Then turn your fuell pressure up to be on the very rich side and then trim the fuel down by the safc to suit your afr targets.
What you wana search when you are ready to go out on the road is
Idle 14,7 to 15
light load till 2 psi max at around 13.
11.5 from 2 psi till the desire boost level.
If you have a standard engine you can go a bit lower on the rich side to prevent engine failure at higher boost.
Before anything adjust your ignition timing and make sure all your igntition parts are top contition.(spark plugs,rotor arm, etc.)
Also monitor det if possible especially if you past 10 psi.
As a side note.. someone else with the same setup or very similar could use the number 30 to achive 13 but you may need 20 or 40 for the same 13 afr target wich means if you use someone else 30 setting you may be 12.5 or 14.5. In the one hand of the 12.5 your car will feel lazy but on the other hand of the 14.5 will go bang in no time.
Are you still interesting for someone else settings?
Chris
Not very humilior with the safc mate but dont search for a number to put in there. Every setup is different and a number suitable to an other same car could be catastrofic to use to your own.
Better go to a rr and record your afr by a wideband. Then turn your fuell pressure up to be on the very rich side and then trim the fuel down by the safc to suit your afr targets.
What you wana search when you are ready to go out on the road is
Idle 14,7 to 15
light load till 2 psi max at around 13.
11.5 from 2 psi till the desire boost level.
If you have a standard engine you can go a bit lower on the rich side to prevent engine failure at higher boost.
Before anything adjust your ignition timing and make sure all your igntition parts are top contition.(spark plugs,rotor arm, etc.)
Also monitor det if possible especially if you past 10 psi.
As a side note.. someone else with the same setup or very similar could use the number 30 to achive 13 but you may need 20 or 40 for the same 13 afr target wich means if you use someone else 30 setting you may be 12.5 or 14.5. In the one hand of the 12.5 your car will feel lazy but on the other hand of the 14.5 will go bang in no time.
Are you still interesting for someone else settings?
Chris
i c. so the important point is AFR within the range you described above. i'll explain this info to my tuner.
but there's 1 thing still makes me confused. what should i do at the SAFC II module to get the AFR points ? which function at SAFC II should i change ?
rage
Lifer
minimum of parts to make it work correctly: Rising rate fuel pressure regulator, wideband sensor and the safcII. and if you get near the 1 bar of boost I reccomend an uprated fuel pump aswell as the stock one will struggle to keep the fuel pressure up at high rpm's and an uprated manifold as the stock one has a restriction in the 3rd runner and using it with such boost levels will melt your ringlands
set the rising ate just high enough that the car is running a little rich according to the wideband sensor. then you use the SAFC (settings, hi/low)to add or decrease fuel flow. if you decrease fuel by a % on a certain rpm level the car will run leaner and that will show on the wideband sensor. decrease the fuel across the rpm levels till you get the desired number on all rpm levels.
this can take quite some time to get right.
does your tuner have a rolling road?
set the rising ate just high enough that the car is running a little rich according to the wideband sensor. then you use the SAFC (settings, hi/low)to add or decrease fuel flow. if you decrease fuel by a % on a certain rpm level the car will run leaner and that will show on the wideband sensor. decrease the fuel across the rpm levels till you get the desired number on all rpm levels.
this can take quite some time to get right.
does your tuner have a rolling road?
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necro
ok, ill be getting a safc 2 shortly, from what i read though i thought its best to trim (-ve correction) before boost and add fuel (+ve correction) after the obset of boost, of course using an fpr to find the point where that is possible?
also for reference an rrfpr is an fpr which increases fp by more than one psi per 1 psi increase in intake manifold pressure?
just questioning
ok, ill be getting a safc 2 shortly, from what i read though i thought its best to trim (-ve correction) before boost and add fuel (+ve correction) after the obset of boost, of course using an fpr to find the point where that is possible?
also for reference an rrfpr is an fpr which increases fp by more than one psi per 1 psi increase in intake manifold pressure?
just questioning
The only main use for an apexi safc on the 4efte is to trim back excess fuel, pointless to use unless u are raiseing the fuel via adjustable fpr, any adjustments made with the safc alters the ignition timing, that's what i learned when i fitted an apexi safc so i went emanage.
hence the reason i suggested the method above, if u trim below boost, even if u add timing the car would be under low load and above if ur adding fuel (by altering the map signal), the ecu would be pulling timing? also part of the reason for a safc2 and no a 1 or neo is the knock monitoring, also have a wideband.
> The stock Fpr is still rising rate it is just the rate is 1:1 and the base pressure is fixed ie non adjustable.
> Depending on how much fuel you add in the first place you may find you have some - (neg) trim on boost. eg. I think my injectors are equivilant to 57.31psi fuel pressure with stock injectors 80DC the SAFC2 is -25% fuel AFR 11.9 at 15psi boost.
> Another situation is if you are using the SAFC alone to stay below fuel cut you will need min -11% to stay below 4.5v and -18% to stay below - 4.1v which is less preferable.
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There are a few options . It is good to know what power you want. Safc 2 can take out 50% fuel so that is the limit for stable idle. ( 50% includes the extra ac and cold start fueling etc the stock ecu adds above base pressure )
If you dont use safc for fuel cut you have the full size of your bigger injector size or increased fpr pressure for power. Having said that I hear some people just up pressure a little for more power and if they exceed what the stock ecu can control they use the safc to trim back some excess to keep their fuel economy.
You have to watch out for low temps and high boost together that can max out the injectors.
If you dont use safc for fuel cut you have the full size of your bigger injector size or increased fpr pressure for power. Having said that I hear some people just up pressure a little for more power and if they exceed what the stock ecu can control they use the safc to trim back some excess to keep their fuel economy.
You have to watch out for low temps and high boost together that can max out the injectors.
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