can I tune 720s with an safc2?

[conor14]

I just want to get my car on the road and want i driveable till I get my enthalpy tune. is it possible to tune my s13 redtop sr20det with an apexi safc2? ive read its only possible to do it with injectors that are 50% larger than stock. If I can what are some settings to start off with?

Set up
fuel:
255 walbro
300zx fuel filer
nismo adjustable fpr
720cc injectors
stock fuel lines and fuel rail

turbo set up
stock exhaust mani
tomei m8270r turbo
3inch exhaust
300zx maf
greddy fmic

[shift_down]

Dont be stupid. You have n excellent turbo setup and you are going to risk blowing up your motor because you can't be patient for your enthalpy tune?
SAFCs are junk

THINK!

[Mikester]

Dont be stupid. You have n excellent turbo setup and you are going to risk blowing up your motor because you can't be patient for your enthalpy tune?
SAFCs are junk

THINK!

I would have said it differently; but I absolutely share the above sentiment.

OP- Throw the SAFC in the garbage where it belongs... or sell it... or give it to Goodwill... or set it on fire... bash it with a hammer... use it for a spankerchief.... ANYTHING~

[conor14]

yeah only problem is I live in alberta and its summer 2 months of the year and I'd like to drive my car haha and I only got the safc2 to fine tune it when I get my enthalpy tune, thats what everyone said the best way to tune it without getting a stand alone.

I suppose I can wait

[blkvrtswp]

I was going to do the same thing - use it for fine tuning on top of a ROM tune. Some searching made me change my mind.

Sold my used one w/ harness for over $200 so don't just throw it away! Sell it to a Honda guy!

:)

[supersayianjim]

there are plenty of cars running around making good power using safc's!

[jr_ss]

The SAFC CANNOT control 740's... Throw it away and get a tune. You have two summer months, it takes a week to get a ROM tune.

[Kingtal0n]

yeah only problem is I live in alberta and its summer 2 months of the year and I'd like to drive my car haha and I only got the safc2 to fine tune it when I get my enthalpy tune, thats what everyone said the best way to tune it without getting a stand alone.

I suppose I can wait


Right. Fine tune your enthalpy tune with your SAFC very good idea. fuel pressure FIRST to dial in the wide open throttle A/F then use the SAFC to get your idle perfected.

Also, yes you can use the SAFC to get the car driving around on 7xxCC/min injectors just fine. just DO NOT BOOST IT and you wont blow anything up. biggest problem will be fouled spark plugs, and carbon buildup in your engine. So drive it very easy, and prepare yourself to get new plugs and de-carbon your engine once your rom tune arrives.

[shift_down]

Also remember, safc controls air and fuel only. It cannot control timing, and that is what blows motors.

[typhoonslippery]

or go to autodream and get a rom tune on their dyno in calgary

[conor14]

I called autodream but they never answer there phone, what do they charge for a rom tune?

[steve shadows]

The SAFC CANNOT control 740's... Throw it away and get a tune. You have two summer months, it takes a week to get a ROM tune.

Or get a power fc or one of the lower priced piggy backs that actually sort of work like the AEM or you could even pick up a Haltech 500 and wire that up.

Lowest cost alternative that will work well and you will be able to modify on your own as you change things out on the build is trying to find a used Power FC L-Jetro. Best cost/bang for buck for basic EMS setup.

:2c:

[Croustibat]

yeah only problem is I live in alberta and its summer 2 months of the year and I'd like to drive my car haha and I only got the safc2 to fine tune it when I get my enthalpy tune, thats what everyone said the best way to tune it without getting a stand alone.

I suppose I can wait

Stop listening to everyone and just listen to people who know.

You cant tune anything with an SAFC because you have absolutely no control on the timing, and this thing WILL alter timing.

Best way to tune without getting a stand alone is to use a nistune daughterboard. It plugs instead of the oem chip and gives full control over your OEM ECU. Plug a laptop in it and voila ! All timing and fuel tables, all parameters are changeable there, in real time if you want them, and loggables. It can also log your wideband (well, depends, but usually it can).

[djcobra]

Look up 'Vex Performance' in Calgary and ask for Jimmy.

He'll give you some ideas what to do... best bet is to go standalone.

Steve.

[di-devol]

Right. Fine tune your enthalpy tune with your SAFC very good idea. fuel pressure FIRST to dial in the wide open throttle A/F then use the SAFC to get your idle perfected.

Also, yes you can use the SAFC to get the car driving around on 7xxCC/min injectors just fine. just DO NOT BOOST IT and you wont blow anything up. biggest problem will be fouled spark plugs, and carbon buildup in your engine. So drive it very easy, and prepare yourself to get new plugs and de-carbon your engine once your rom tune arrives.

It wouldn't be JUST FINE, it would run absurdly rich. Last thing he needs to do is wash the walls down dude.

[HazeBlazer]

POWER FC!! POWER FC!!! POWER FC!!!!!!!!!

I bought an sr'd car that was running of an SAFCII. Long mega shitty story made short, I had to get the engine rebuilt, so much was wrong with it. Please save up another hundred or two and get a power FC. I don't want to see anyone going through what I had to go through. Wait a bit more, do it right, or you'll be months without a car, like me.

[Kingtal0n]

It wouldn't be JUST FINE, it would run absurdly rich. Last thing he needs to do is wash the walls down dude.

It wont be that bad. You would be surprised. If he drives it fairly easy and doesnt boost it will not be that bad mainly because the ECU will pull fuel from it's block learn multiplier in closed loop. If he doesnt boost the air fuels will be damn near perfect. Its just when he stabs the gas suddenly or starts quick from a traffic light and the engine vacuum crests 0psi there is no closed loop and it will get 10:1 air fuels or thereabouts.

But nothing you cant fix later with some new plugs. His sr has piston oil squirters so the oil will be there. more frequent oil changes.

[Croustibat]

It wouldn't be JUST FINE, it would run absurdly rich. Last thing he needs to do is wash the walls down dude.

Dont waste your time answering kintalon, he has gone nuts (for real, it is not just an opinion)

[conor14]

I'm going to sell my SAFC. I'm going to be getting my car trailered to Autodream in Calgary and going to be tuning it with Nistune. Its 550 for the software, 100 to install it, and 150 an hour on the dyno. They were extremely helpful and kind. definitely recommend these guys to anyone in the area.

only issue was they didnt like that im going with a cometic head gasket and my turbosmart manual boost T cause it will most likely spike to 16-17 psi when were tuning for 15

[Croustibat]

Do it properly once: get a boost controler.

installing a nistune is a matter of removing the potentiometer, file the hole to let a USB port go throught, and solder 4 wires at an easy spot -if your ECU is already socketed. Do it yourself and save 100bucks, or ask for a huge discount if the ECU is socketed. It is a 15 minutes job at most.

i cant see why you would pay for the software. You dont need the licence if you dont tune it yourself, the tuner is supposed to have a tuner licence. Get your nistune directly from Matt and install it yourself ... if you want to make the tune yourself AND if the 550 include the daughterboard, then it is somewhat ok. Cant remember how much i paid for myself when i bought it, but i sure didnt pay that much.

[Mikester]

In addition to a poor decision regarding ANY manual boost controller (you will see first-hand on the dyno sheet why an EBC is a better choice) and trying to tune with it; I also don't blame them for frowning on your choice of a Cometic HG.

OEM HG and ARP studs is the absolute BEST seal you are going to get between the block & head- unless you plan on having everything decked, polished mirror-smooth and having the top of the oil pump cover machined even with the deck to preclude a weak spot near the #1 piston. If you are 100% dead-set on an MLS gasket... at the very least, get the oil pump cover machined, ARP studs and an APEXi, Tomei (stopper-type), or Cosworth HG. MLS HG's don't 'save' engines the way you probably think they do... tuning & regular, responsible maintenance are the things that will make or break your motor.

No intentions of taking this thread on an off-topic tangent... but what that company is telling you is indeed legit with respect to HG & boost controller.

[Tom N]

Also remember, safc controls air and fuel only. It cannot control timing, and that is what blows motors.

Incorrect
AFC does not control fuel or timing. It alters the the airflow signal to the Ecu. That indirectly changes what fuel and timing cells the car will be running on.