bcty

I just ordered mine with a few other things and i was wondering what it is like to install or does it come with good or bad instructions? how do u tune it properly if you dont have a dyno near you or a A/F ratio gauge? what are some of the gains and benefits you noticed? Any info on this would be great! i am looking forword to playing with it! thanks

tyler

Aaron Cake

iTrader: (1)

If you don't have an A/F guage, get one. You need it to do the basic tuning on the AFC.

The instructions are decent. I didn't have any problems understanding them, but it helps to have the Haynes manual around with the wiring diagrams.

For someone wth an NA, it allows you to properly lean out the fuel curve at higher RPMs. The stock ECU runs the car pretty rich, and some power is gained by leaning SLIGHTLY. Also, it allows you to tune your midrange low throttle for cruising and better mileage. Basically, the benefits are MORE POWER and BETTER FUEL ECONOMY.

Searching "S-AFC" will bring up tonnes of stuff....

PS. Fix your signature. It is way longer than the forums 450 pixel rule.

bcty

what would you recommend for a A/F gauge? Autometer? or are they all decent and the same? would i be able to just get someones gelp on here with the tuneing and then get a A/F Gauge to perfect it later on.. thanks

rico05

Autometer blows. Get Apex, gReddy, Defi, etc just not Autometer. You will need the A/F gauge now to do this correctly. If you don't, you may lean out too much and POP. Do you want to pay $120 for a gauge, or $2k for a new engine? Think about it......

SoloIIdrift

While I truely hate autometer products, a A/F gauge using the stock O2 sensor is going to be the same pretty much no matter if you spend $60 or $300. They are both getting the same "not so great" signal. You really need a wide-band O2 to do serious tuning.

This is why I'm looking for a low priced NON-autometer gauge...it's tough finding a Wolf AF1 dealer in the U.S.

rico05

I use a Nordskog digital. It's ok.

Roy James

Best place for Wide-band O2? how much will one of those run?... i need one! Hey Aaron Cake, hows the car? any solid times yet? And what setup did you ever end up using, EGT correct? What temp you keeping it at?

Wow, a whole post with nothing but questions, sorry guys, this is a subject im pretty far out on..

Thanks

Aaron Cake

iTrader: (1)

An AutoMeter A/F guage is fine. Basically, no matter what guage you buy, they're all the same. Most A/F guages are based on the same IC as all others. So it really doesn't matter.

The car is doing fine. I plan to make a status post after I get my new 3" exhaust on and do some dyno runs. So far, I have been fine tuning to the A/F guage. I am quite safely rich when under boost.

NZConvertible

Exactly! And really, they're not all as good as each other; they're all as bad as each other! The problem is the sensor; it's far too inaccurate for proper tuning beacause that's not what it was designed for. If you're going to lean out the mixtures to squeeze out a few more HP, get it dyno-tuned!

Supermac 7

for street tuning, you cant beat an EGT gauge with a good sensor. A/F tells you absolutely nothing on the street, the stock O2 sensor is highly inaccurate in sending that type of a signal. You really need to dyno tune it with a wideband in order to properly tune any standalone/piggyback.

Jameson

bcty

how much do wideband O2 sensors cost? are they go the exact same place as the stock O2 sensor? So sutometer is ok then for a A/F Gauge...

NZConvertible

Couple of thousand dollars. No joke.

bcty

well then how the hell am i gonna tune my car if i dont have a dnyo near???

bcty

i was thinking if i could post my mods and someone else with close to the same mods could gimme a good setup.. not to perfect it but a bit better then stock to get better preformance but keep it safe?? i am sure this is doable.. i could just use someone elses setting they have had good times with!

bcty

a thing that could help me would be a few ppl to post there mods turbo or not and what they have there setting at?! could a few of your please do that?

Scott 89t2

come to vancouver... www.lr-racing.com will tune it with a wide band for like $60 cnd.

bcty

mint! where are they located? are did u get yours tuned there?

Scott 89t2

ya I did. they are in port coquitlem (SP?).

just did it on the street with a few WOT runs, he just sits in the pass seat changing a bit at a time.

RX7withNitrous

is the s-afc hard to control i mean as far as putting more fuel into your engine and what not? What all does it do also?

jspecracer7

I think I have posted the answer to this question close to 30 times...different forum each time, but still the same thing written down. I should just save this as a word document on my computer so all I have to do is pull it up and pow...all the s-afc answer anyone will need....


But if you have any questions, check out my SIG...

jspecracer7

You could always use an EGT gauge. It should be fairly accurate for street tuning. It will get you by until you get a dyno tune.

I think that all the O2 sensors suck. I'm willing to spend the big bucks($1000 USD) on one, but I've got other things to take care of right now...like what parts I need to find/order for my engine rebuild

KNONFS

iTrader: (14)

I don't know jack about tuning, etc, however here is O2 sensor explanation, and some info on the EGT's by Hitman himself:

"The age old question about AF Meters.

The difference between a narrow band (NB) and wide band (WB) is that the NB was only designed to be accurate when close to 14.7:1 The further you go away from this mixture the less repeatable the values are and the more they are influenced by the sensor temperature.

1V WB sensors are simply matched batches of NB sensors that respond the same with corresponding changes in temperature (eg Bosch LSM-11). This means that they can be sort-of mapped out and a relatively accurate mixture can be given. Not dead accurate but good enough for basic tuning.

5V WB sensors are a different kind of animal. They require a "controller" to make use of the data which is not only voltage but current. They are very linear in output with mixtures even at extreme ends of the spectrum and they are very repeatable.

It all comes down to what you spend. "Pay peanuts, get monkeys". If you buy a $200 meter, only expect $200 worth of accuracy. If you go for a $4000 true WB setup, expect lab quality results.

As for EGT's I would be very wary of using them for tuning. The response time is way too slow and by the time you read the values you could have already damaged the motor. They cannot be used for timing mapping as so many things can effect EGT that picking one and adjusting from there is not a good idea at all. I still like to have EGT available as a readout as it shows trends and general combustion condition. If you are doing a salt lake run at full speed it is almost vital to have EGT to see when you are pushing things a little too hard for too long. For tuning though, they are about as useful as a cheapo NB meter."

bcty

if anyone has a n/a that i could see what there reading are that would be great! who has one on this site names??

SoloIIdrift

I've heard that you can use the Apexi S-AFC as an A/F meter also, it has inputs for it or something...

anyone know about this?

NZConvertible

No, but even if you could, it'd still be no more accurate than any other A/F gauge that uses the stock sensor.