To Use SAFCII or NOT

[sidewaysil80]

ok this is my setup currently and i'm not planning on upgrading anything else anytime soon. with that being said here are the important mods..

-gt28r turbo
-12psi of boost
-metal head gasket .88/1.00mm
-brian crower valves/springs/retainers (sold camshafts when i downgraded setup)
-oem cams
-oem injectors
-ka24E mafs
-safc II (picked it up for DIRT CHEAP)

i have an safcII and am wondering if i should bother installing it and getting tuned or just run the stock ecu. i'm NOT getting a standalone and am NOT planning on upgrading injectors/mafs. is the safcII worth installing/getting a tune or will it cause more harm then good? -thanks

[VNG704]

Why are you going with BC valvetrain vs your stock set? I don't think you need that upgrade with oem cams. I'd suggest saving the money from the BC valvetrain and Apexi SAFC for 480cc(atleast) inj, z32 MAFS, and an RS Enthalpy ecu tune for that setup. That would be better for the turbo. As for safc making power, I've seen first hand that they do with a basic bolt on setup w/safc dyno tuned, regardless of what people say. Even with that said, it wouldn't be my first choice of tuning method.

[LayNLow]

If your going to buy a brand new safc2, or even if it costs half as much as a new one, your better off going with Nistune. Near the same cost, yet a lot more function for your dollar.

[sidewaysil80]

i'm sorry i should have clarified...i already have everything its just wheter or not to use the safc or sell it and run stock ecu. i have that valvetrain because this was my old engine which had brian crower cams...however i wanted to run a fairly stock setup so i swapped them for oem cams. i just want to know if the safcII is worth installing/getting tuned OR if it will cause damage to my setup...

[YucA]

While it wont necessarily cause damage to your setup, you will, without a doubt get better results with a tuned stock ecu like nistune or whatever else tickles your pickle.

I personally wouldn't waste my time with the afc...

[LayNLow]

Then sell it and use that money to get Nistune. I wouldnt use a SAFC if someone paid me to. Well actually I am pretty broke... but thats besides the point. I would sell it and get nistune installed on a stock 62 ecu.

[sidewaysil80]

ok this is already getting away from the question...

install safcII lying around and have the car tuned for 12psi
OR
run the setup that i posted above for 12psi without the safcII and let the stock computer deal with it on its own

[clark]

there are alot of people successfully using the SAFC.

most people on here say not to use the SAFC because steve shadows says not to. he undoubtedly is an expert in his field, but the SAFC corrects air fuel ratios. why not use it if you suspect you have incorrect air fuel ratios and you suspect you're leaning out because your ECU can't keep up or your MAF is maxed.

you have a stock setup, so all you'll be doing with the AFC unit is adding more fuel because of the increased turbo size and boost pressure.

i'm no expert on tuning, but this thread is biased.

[S14_Kouki]

dude its laying around it will not only make your car run better with a good tune it will be more reliable INSTALL IT

[sidewaysil80]

i'm waiting for the tuning gurus to voice their opinion LOL...i pm'd steve shadows but i'm sure he is quite busy. anyone running a similiar setup?

[RACETUNE]

ok this is my setup currently and i'm not planning on upgrading anything else anytime soon. with that being said here are the important mods..

-gt28r turbo
-12psi of boost
-metal head gasket .88/1.00mm
-brian crower valves/springs/retainers (sold camshafts when i downgraded setup)
-oem cams
-oem injectors
-ka24E mafs
-safc II (picked it up for DIRT CHEAP)

i have an safcII and am wondering if i should bother installing it and getting tuned or just run the stock ecu. i'm NOT getting a standalone and am NOT planning on upgrading injectors/mafs. is the safcII worth installing/getting a tune or will it cause more harm then good? -thanks

Nice setup!!! keep the stock injectors, run the safc 2, your setup is perfect!! it will respond very nice and great drivablity. or jsut keep stock ecu, dont waste your time with a rom tune.

[blackej7]

there are alot of people successfully using the SAFC.

most people on here say not to use the SAFC because steve shadows says not to. he undoubtedly is an expert in his field, but the SAFC corrects air fuel ratios. why not use it if you suspect you have incorrect air fuel ratios and you suspect you're leaning out because your ECU can't keep up or your MAF is maxed.

you have a stock setup, so all you'll be doing with the AFC unit is adding more fuel because of the increased turbo size and boost pressure.

i'm no expert on tuning, but this thread is biased.

safc does not "correct" air fuel ratios.

safc alters the maf signal, which puts the engine in a different load cell. So youll be changing the "air fuel ratio", but you wont have correct timing values for the amount of load on the engine....

plus... a/f ratio doesnt have to be fuckin PRECISE... as long as its within a safe window...

when people say they want to use an safc to precisely tune their a/f, that makes absolutely no sense to me....

my opinion - dont drive the car until you have a way to tune it.

[S14_Kouki]

i'm waiting for the tuning gurus to voice their opinion LOL...i pm'd steve shadows but i'm sure he is quite busy. anyone running a similiar setup?


HOW about this Iv Tuned SAFC's and Power FC's put the damn thing on already there you have heard the voice

[sidewaysil80]

HOW about this Iv Tuned SAFC's and Power FC's put the damn thing on already there you have heard the voice

lol thanks to everyone who everyone voiced their opinion...by all means if any one wants to chime in we can keep it going. i'm thinking that the a:f ratio corrections if any should be minimal base on the simplicity/near stockness of this setup...so the timing curve shouldn't be too far off or adverse or am i dead wrong. but on a side note, why is it that the safc gets such a bad name...is it because most people try and tune highly modded engines that are out of the safc/neo's parameters?

[punxva]

lol thanks to everyone who everyone voiced their opinion...by all means if any one wants to chime in we can keep it going. i'm thinking that the a:f ratio corrections if any should be minimal base on the simplicity/near stockness of this setup...so the timing curve shouldn't be too far off or adverse or am i dead wrong. but on a side note, why is it that the safc gets such a bad name...is it because most people try and tune highly modded engines that are out of the safc/neo's parameters?

that is exactly why they get a bad name. with what your using it for... aka fine tuning its perfectly fine. not to mention down the road if all you add to the setup is a z32 maf then it'll make it really simple to compensate, aka just change the maf in and outs. I use one to fine tune my enthalpy ecu on my ka-t and to compensate for my z32 maf which isnt accounted for in my tuned ecu since i bought it used.

[sidewaysil80]

not to keep beating a dead horse, but say its starts leaning out a little bit at wot or at higher rpm's would an adjustable fpr say like the nismo one be able to correct that...or is that a not reliable solution. i'm trying to avoid bigger injectors/reflash

[janders211]

SAFC's work when used right.
740cc injectors on stock MAF and ECU with your IC wrapped in a garbage bag, while doing a track day in reverse on a 110 degree heat is not using it right.
People that blow stuff up with the SAFC are screwing stuff up - the SAFC is not.
I datalogged +/- 5% on the AFC and saw around 1 degree ignition change...this doesn't blow stuff up.

FPR's are useful as well for tuning (aka for global afr tuning).