tuning the S-afc for a n/a

[tbTalonES94]

Hey this may seem like a dumb question but can i tune the S-afc II for my N/A talon to give me anything? Like lean it out at the top to get some more top end or not? I have already baught the s-afc II and it is installed. I bought it because i am planning to turbo my car but it will be a little while before i get the rest of the stuff so i was wondering if i can tune it to get that little extra out of my car? If so what should i do?

 

[RandomHero]

NO what you need is a civic trevor. thos thingy are fast especially if it is yellow with a big bike rack.

 

[tbTalonES94]

No mathew i need to tune my car correctly so i need some opinions not a civic thats yellow. Although i do agree yellow=fast

 

[Drifte]

First you have to set it to bling mode. Then get some wills'.
later

 

[Megags]

Nice pointless posts.

Yes it will give you something. Probably not much unless you are modified a good amount. I hope you have a logger or egt gauge.

 

[Drifte]

trevor doesnt need those(egt guage, logger), he's a real ninja, with Ninja ears and stuff.

 

[tbTalonES94]

dont mind colton.........idiot.............its not a pointless post. I can gain some from an s-afc it just has to be tuned carefully. I dont need a logger because im not tuning for optimum results like with boost.

 

[Drifte]

we'll try the gtech tomorrow, dude. idiot?? comon buddy

 

[krustindumm]

dont mind colton.........idiot.............its not a pointless post. I can gain some from an s-afc it just has to be tuned carefully. I dont need a logger because im not tuning for optimum results like with boost.

WTF? yes, you are. You need a to get a precise amount of fuel for a the air, otherwise you will not be using the incoming air to it's fullest potential.

Not saying I know how, I just know what needs to be done.

-Dustin

[edit]
adding a challenge, I will run you anyday, anytime with the [99% stock-I added a CD player] CRX. If you turbo your car I'll run you with the civic, no need to embarace you too bad if you don't have a turbo.
[/edit]

 

[Drifte]

krustindumm, biggest car nerd i know. listen to him trev. and hes a little testy, ignore his anger.hehe

 

[krustindumm]

Oh, and from the information I have learned N/A cars are MUCH more sensative to fuel trim adjustments then Turbo cars. This means that you will need to adjust the AFC with ultimate precision. You will need a dyno to get the fuel trim perfect at every RPM point, and you will need a very experienced tuner who knows how to use the throttle point setting. Add it up, if you do this yourself with out any tuning tools your gains will be minimal (1-2hp), you may loose power, and you may seriously harm your engine.

Yup, I'm a car nerd.

Honda

 

[tbTalonES94]

So from all this bashing on me youve taught me nothing. I know you have to tune it very carefully. Yes yes i said wrong that i dont need a logger but i dont have the money. I just wanted to know a simple answer to a question. How could i tune it to get some results? Like guessing whys how much richer or leaner should i be at certain rpms. I also have an air/fuel gauge if that helps.

 

[dj_u4ea]

Ok heres the deal...you can lean out or go to rich, it is a fine line very fine, to the point that unless you have tuned for years and can practically feel the mixture burn your nose by sitting in the seat, best bet is to save up b 4 you do anything and put it on a dyno. cheapest in the long run, because if you go to lean you could burn something and cost yourself more friggin money,are there alot of mods or just cold air,etc? that is your first question, here is the second, for what you have done (parts wise) what are you expecting?tuning your safc II even at best on top end if not much else is done might only produce .001 second of your et. every little bit helps, but um...that aint no 10 sec car... if you have lots of mods think of all that money you just sank into that little ol 420 a and tell me that a pro who has the equipment to make sure it is all properly tuned and running at its peak isnt worth the money? i have been doing this a long long time bro, and my advice is just that advice, but you cannot really tune the thing exactly on the money without a DYNO. bottom line.

 

[tbTalonES94]

And that is what i wanted to know. First off i have a 4G63 jus to let ya know. I also have an intake, exhaust, header, turbo cams, UDP, and a CO2 cooled intake. I dont have the money to put it on a dyno yet but one of my friends (Drifte) has this g-meter that measure horsepower according to weight and other factors. Could that help? Also if im going to spend money on dynoing to tune my car as it is now i might as well save up a little more and either turbo it, do some porting, or other things before tuning the S-afc with a DYNO. But the question is can i use the g-meter thingy?

 

[Megags]

I don't know what would make you think you could use a g-tech. It's not precise enough. If you try the safc, that get an egt gauge so you at least don't melt stuff.

each run is so imprecise, first off, you don't know if the ground is completely 100 percent level. I suppose you're going to try to tune it for horsepower huh? My runs on a gtech made me realize that it's not consistent. On the straightest road I could find I made 114hp and in the other direction 112hp. on other roads I thought were straight, I got anything from 80hp to 94hp. G-tech isn't a tuning device.

You need measurements that are consistent. You need to know what your engine is doing before you change stuff.

 

[krustindumm]

First the g-tech that Drifte has is mine, and it is a TOY! It is not for tuning, it is for me to play with.

I'll let you in on my tuning secret, but remember this is useless w/o a dyno. Someone here can can give you a voltage (someone want to hook him up? I use like .9V, but my car is a turbo SOHC) and you can tune to that, but that is the best I can do.

--------------------------------------------------------------
First print off this chart, or make one like it, and fill it in EVERY TIME!!!! You will need at least 4 of them.
<url>http://images.cardomain.com/member_images/9/web/273000-273999/273190_70_full.jpg</url>

Determine where your car shifts from the low Th map to the High TH map. On a honda, the O2 reading is ignored during high throttle operation, which is over like 72% throttle.

Set your High Th point to that %, set your low TH point to as high as it will go (1% under H-Th).

Hook a volt meter to your TPS, and find what % is equal to your desired O2 voltage (move gas pedal until volt meter shows XX volts, look at AFC to see what % that is)

Now unhook the Th input and hook it to the O2 sensor wire. (temporary, so don't solder unless you really want to)

Go to the view where it will display Th over RPM, and set it to show infinite points.

Find an abandoned road. Run WOT in 2nd or 3rd from 1k to redline, push in the clutch and stop, try not to mess up the graph with unnecesary stuff (you'll see what I mean) write down the results at your defined RPM points.

Adjust the tuning. (you will need to adjust the low Th map, because the AFC will think you are at a low Th setting)

Repeat.

When it is perfect you are done. Make sure to write down the map. Also you may now program it to the High TH map, it will not be used until the final step though.

Now do the POT (part open throttle) side. Use the same method, it does not need to be perfect, because the ECM will still read off the O2 here. You will also be adjusting the low Th map. Write down your tuning here too.

Put the Th input back on the TPS wire, and make sure the O2 wire is repaired correctly (so it does not ground out). The AFC will now read off both maps.

copyright-krustindumm-2003

------------------------------------------------------------------------------------

-Dustin

 

[Drifte]

haha, copyright. way to help him out after all that. me, i got nuthin. good luck trevo.

 

[krustindumm]

sorry, but my host is down and the file is too big to upload, you will have to wait.

-Dustin

[edit]Now up[/edit]

 

[98RedGs]

Take your conversation that your having through your post's to pms or to a chatroom guys.

 

[krustindumm]

Were you refering to me? From what I can tell my posts were somewhat informative and not mindless chat.

-Dustin

 

[tbTalonES94]

Thanks dustin. Maybe i will have your brother help me or something or when and if your back in town help me out. TIll then i will settle for the cool monitoring features. Also this isnt a conversation it is questions being asked and answered from my and by krustindumm. Isnt that what forums are for?

 

[Black86GTi]

ok this is what you do put the safc on one of the cool screens (i like the rev-counter) an leave it untill you turbo the car and can put those "turbo" cam to their proper use. When your that far go to the dyno in IC or Highawatha and tune it properly useing the dyno and a wide band a/f meter

 

[Drifte]

So yer sig, BLack86GTI; does that leave you in the parking lot??

 

[krustindumm]

New idea:

put a switch in the Th wire to the VAFC, so you can switch it off before starting and after you are done with your run. I need to test it.

-Dustin

 

[Black86GTi]

this forum blows the mods are to f@#$ing strict. im leaving now hey krustin lets start our own fourm and be our own mods. it would be so much more fun