Tyler [S5 FC]

So I just dynoed my S5 N/A this weekend (here in CO, was very dissapointing) But when I ran I was running really rich. The owner told me I should get a power fc and he could fix it. I've been searching and found this cheap one on ebay. It was very general, and is the only one that seems like its made for an N/A. All the other ones say turbo and are 3x as expensive. Please check the link and let me know if this is what I'm looking for. If not, can you be so kind as to tell me where to get one for my car. I'm sorry I'm such a noob! I love driving but don't know much mechanics. So any help would be much appreciated. Here's the link for the cheap Power FC.

http://cgi.ebay.com/APEX-APEXi-POWER...1%7C240%3A1318

87 t-66

iTrader: (133)

that is just for the hand display/controller. you probably don't need a standalone unless your car is heavily modified (ITB's, major fuel, etc). you should be fine with a safc or rtek. buying a stanalone, paying someone to install and tune it will run you upwards of $1500.

RETed

If that person did indeed tell you "Power FC" and not "S-AFC", then they are an idiot.
There is no such thing as a "turbo" versus "non-turbo" Power FC; the Power FC is available with different harnesses and internal chips.

All you need is a fuel computer - i.e. an A'PEXi S-AFC.


-Ted

Red95FD

iTrader: (3)

But if he did get a PFC with little or no mods and had it tuned, would he get more out of it? Than say a S-AFC. Or would it be about the same? Just curious.

Tyler [S5 FC]

Frank, used to tune jets back in the 90's, and is by no means "an idiot" He's a tuning genius, and us in c springs are lucky to have him.

Anyways, he did tell me power fc, and I just talked to my buddy and he said that the power fc for a FD should work with my FC. So should I go S-AFC over power fc? I know my engine doesn't have much to it right now, but I do have plans... lots of them So it might come in handy later.

The controller, ha, can't believe i didn't notice that. Thats why it was so cheap.

Whats the real difference between Power FC and S-AFC? Would the S-AFC let me control the Air/Fuel?

87 t-66

iTrader: (133)

the power fc is a full standalone and is not needed for your application. the safc is a fuel computer as ted said. get whichever one you want. its your money. being able to tune a carb and a full EFI EMS are two different things.

Tyler [S5 FC]

Sorry to mention this now, but I have an intake (huge power booster, I know) and larger injectors from HKS. Got em with the car, so I don't remember exactly what size... I'm guessing 500 and 750. Thats about it engine wise, my guess is the injectors are whats messing up the ratio when I get on it.

But I did like one of the questions in here. Wouldn't I get more power from the Power FC over the S-AFC, regardless of what I have done?

87 t-66

iTrader: (133)

of course...if you can get it working properly that is and if someone knows how to tune it.

Jakor

Having lived in colorado for most of my life, and having a friend just move to colorado (from california) you must remember that Colorado is up where the air is thinner. My friend started throwing big flames with his bike (he should have his t2 running by now, havn't heard). FC's ran rich stock and could be turned leaner, with the added injector size (assumed) it's no wonder the thing would run rich.

What kind of numbers did your car put out?

Black91n/a

With the Power FC you should be able to run it without the airflow meter and you should be able to get it to run ideally everywhere, this will be good for a few hp, but will cost you a lot more $$$$. THAT's everyone's point, for the extra cost of the Power FC over an S-AFC or an Rtek, the power gain is just not worth it.

Swapping back to the original injectors will help a lot, you don't need bigger injectors unless you've got way more mods.

Circuit Theory

iTrader: (52)

You have an NA FC with an intake and maybe exhaust. You dont need larger injectos. Swap it back to stock injectors and sell your current HKS injectors( Does hks even make injectors???) then with that money buy a SAFC if you feel you really need one. I say dont waste any more money on dyno's or tuning. Save for a new NA but built/ported engine or save for a TII swap.

KhanArtisT

iTrader: (2)

Yeah holy ****. I'm surprised the car doesn't shoot black smoke everywhere with the 550/720 injector combo and stock computer.

If you're serious about staying NA you can get an RTEK 2.0 and have full control of fuel and timing. Even streetported NA setups benefit from running LEANER with the stock injectors making more power. You could tune the injectors down with an RTEK but it'll be a lot of tuning on your part, best bet is to put the stock 460s in. This is all assuming you are wanting to stay NA for a reason, as mods exceeding $1000 are useless and should be spent on boosting the car.

Your tuner probably suggested the PowerFC since he may have had experience in tuning them without really giving it much thought. Obviously that would solve your problem, but bang-for-the-buck wise an SAFC (fuel only) or RTEK would be a much better choice.

RETed

How about you do this experiment for us and report back your findings?


-Ted

arghx

iTrader: (3)

Take it from someone with a lot of experience with both the SAFC and the Power FC...

installing a Power FC and getting it tuned will cost approximately half the value of the car ($1000), for no benefit over an Rtek 2.0 . Furthermore, your car will run a lot worse than stock initially. The basemaps out there (even the ones from AP Engineering and Banzai Racing) are not for n/a cars with 460 cc injectors. It will require a ton of tuning to get the car to run as well as it did on stock ECU (gas mileage, smoothness of driving, etc) with no perceivable benefit over the Rtek 2.0.

Even if your tuner friend is good at what he does, is he going to spend the many, many hours necessary to get the car to drive like stock? probably not. ask anyone who tunes their own standalone, it's pretty damn tedious at times and very time consuming.

Tyler [S5 FC]

Yeah, when he said power fc he was busy and runnin around. I just asked, how to fix the problem and he immediatly replied power fc. So I'm gonna look for an RTek 2.0, does anyone have one for sale? Obviously I'll check out the classifieds, but since I'm here!

I put out real low numbers (don't even wanna say) but you have to understand, I'm 6,500 ft above elevation. But 101 hp and 117 lbs. Sad I know, but the odd thing is I've beatin some cars I didn't think i stood a chance against. Like an Rx8, an EM1 Civic Si, and others... I was shocked when I heard.

I don't know what I really wanna do right now. Eventually I'm gonna put like 10k into a 13BT, but thats a ways down the road. I just want my car to run strong and last until I do the swap. So controlling the Air/Fuel would prolong its life, and make me run better. I appreciate all ur help, even some of the critisism.

arghx

iTrader: (3)

clogged cat?

Tyler [S5 FC]

Is this what I should be getting? If so, let me know right away, so I can buy it! Please let me know ASAP! Thanks guys!

http://cgi.ebay.com/ebaymotors/APEXI...245#ht_500wt_0