ive searched but all i get r how to tune these things.

i just want to know what an SAFC is, how it helps with performance and how to tune it for a 91 n/a coupe?

thanks for the patience guys,
Carlos

 

Performance: an SAFC is used to tune down your injectors at certain RPM's to maximize horsepower using your A/F ratio as a guide. (12 seems to be the magic/favorite number)

How to tune: either get a wideband o2 sensor and adjust accordingly or bring it to a dyno and have them do it.

The majority of the forum members will suggest you bring it to a dyno.

 

so is this something i can add to my list of "basic mods" for my car?

in the list already are: RB cat-back, superflo cat, hollowed pre-cat, CAI, lighter flywheel, T2 tranny, short shifter.

i dont want to go crazy, just want to bring out the true power an n/a can make without forced induction or porting ;til i get my motore rebuilt.

also some other questions:
- is this a "plug and play" type item?

- where do you install it in the car?

- is it even worth getting for my 91 N/A?

- do u need to upgrade certain components to
compliment its presence.

- im assuming ill need an a/f meter?

- installed properly and tuned right, what increase are we talking about here?

 

it is sort of a plug and play type item... It has a LOT of wires that need to be plugged into the ECU correctly, and it has its own little self setting up thang, and after that you can sit there and tweek settings until you get what you want
Most ppl sit it in the passenger compartment with wires goin to the ecu :-D
It IS worth getting... it makes a big difference
Nothing else should need to be upgraded unless you really wanna freak your injectors out...
An a/f meter is a must unless you wanna stick with 12 and play around till you get what you want
a BIG increase. NA injectors are 460cc running at 58% of capacity stock. More fuel + more air = more power big time. Depending on how its tuned, you should be able to make that car run a 14 with it.
-Porting makes a big diff too tho.

 

wow....thanks for the response.

who sells these things? then once bought, ill just have my local rotary shop install it.

as for the tuning aspect. is it like a "tune-tryout-then tune again" thing? or is there a system where u can tune it from inside the car dependng on ur situation (street driving 58%, racing 100%) wile driving?

also about ur comments on the injectors. with all the upgrades ive stated inplace + the safc, will my stock injectors still be fine? or should upgrade to 550cc?

thanks,
carlos

 

The SAFC is NOT a plug and play system. It requires soldering to install.

If your putting this on a stock N/A, you are wasting your money. And 550s are WAAAY to big for a stock N/A motor.

 

The big question: How do I set up my S-AFC to run with my S5 'vert?

I have the dial type and I have no clue what to set the switches to.

Dont say look it up on thier site, cuz it aint there :-p

 

I slightly disagree. Beyond full exhuast, a tuned safc is probably the best bang for the buck mod a n/a FC can do.

 

thanks for all the info but where would you find one of these things?? and how much money are you looking to be spending after taking it to a dyno and all?

 

well you can get an S-AFC on ebay for about 300 I believe. Used ones are cheaper.

THen you need to go to a dyno which is about 100-150 and adjust ur A/F ratio accordingly.

 

Well. I'll agree and disagree w/ ya Jrat.

The NA's are rich top end so if you tune them down you can probably find some ponies there.

But really it doesn't do a whole lot on a NA car unless you've done some modding like porting.

Now Powerdby13b.
I want to see a 6port running 14's.
Both of mine did 17's.

Most people here after some mods like exhaust will get to 15's if they have a healthy engine and are lucky.

Now I would recommend a header,presilencer, and a dual exhaust system if you want a non street legal exhaust which isn't terribly loud.

You can also get a Bonez Downpipe and high flow cat then your catback exhaust of choice.

Now you also said get a AF meter.
You need a wideband specifically if you plan to tune via this method. These are $300.

Narrow band AFR's aren't good for tuning.

Now Dyno is some what expensive. It's like 50bux a run or something usually unless you get on a group dyno day.

I would recommend to do basic mods first.
Get a cone filter or KN drop in.
Get a new exhaust.
Remove the precat(useless anyway you look at them)
Keep the cat or get a silencing unit.
Then a cat back of your choice.
Corksport is cheapest and loudest while Racing beat is nice and quiet but pack a punch.

 

I will concede the point on the SAFC. They may be helpful, but there is no way he needs 550s.

 

yea, stock injectors are fine...

 

for those who have installed it with certain mods (K&N, high-flo cat, cat-back), what increases r we talking here?

i assume the performance benfits dont just show up once installed, tuning is the key. but once i do book a dyno time and actually tune this thing, "approx" how much "can" i get out of it.....potentially.

my cars a 1991 N/A coupe.

also, does the display (Apex SAFC2 version) double as an air/fuel meter? or will i need to get one as well?

 

RarestRX got almost 15RWHP after tuning the SAFC in his n/a.

He spent a total of $450 ($300 for the unit and $150 for the tuning) $450 for 15RWHP is pretty damn good IMO so its worth it to get.

 

wow thats not bad at all. but r the one on ebay the same (quality, accuracy, work as well...etc.) as the name-brand ones? im leaning towards the APEX Safc2.

any other brands recommended?

and $150 on tuning u mean by dyno time?

 

I don't think there are any eBay fuel controllers. The SAFC2 is a good choice, but you can save a little bit of money going with the SAFC1 (4button) both are good but the SAFC2 does have more features and more tuning points than the older one.

And Yes $150 = tuning or dyno time. But it might cost more or less depending on the shop you go to but it should be in that range.

btw, I meant those in USD (just noticed your in canada )