Ok. I know everyone would say every 7 is difference and I need to get my own settings but I want to know your S-AFC settings for N/A cars only and ones with lots of mods. Yes Bambam if your still alive , even your settings. Im going to get a general idea of were I can set my car at. I have MZSP7 mods except for short fb Tranny. This is NOT my daily driver 7 so Im looking for some easy hp without dyno tuning. Now I have seen N/As run more than -13% fuel reduction across the board on stock fuel system.

Thnx alot

 

-13%??
Damn, i believe it

 

you have to be carefull across series too. the ECU's react way different to mods. the 86-88 lean out and the 89-91 richen up with mods. so don't either bother looking at poeples #'s with a different series.

 

I have cone intake, cold air box, RB turbo back.
SAFC setting

1000(0)
2000(-3)
3000(-9)
4000(-14)
5000(-12)
6000(-9)
7000(-11)
8000(-8)

Low = 40%
High = 80%

Best power comes from 6000 - 8300 RPM
Max AFL = 55.9%

1990 GXL

 

 

Ya...hehe...
I got a Full Racing Beat Turbo back CHEAP....~350 CDN...
So I had a custom front pipe made that connects the exhaust manifold to the presilencer and just use the rest of the system

 

PD-DAY ! thnx alot that helps. Although I would like the low settings as well. I have a 89GXL series 5 so it does run really rich believe me. I see 14% at the most but I have lots more mods so I will probly do a tad more each RPM. Also whats your low settings? Thnx a billion especialy for the AF% because I wanted to compare that to my Ported manifolds. I will get back with my results during this weekend.

Anyone else?

 

My mods are.

Mild to Agressive ported manifolds
Pineapple sleeves (cut shaved and J/B welded in)
Custom short intake / cold air box and ram air coming this weekend
Streight pipe bonez exaust and cat back (billit)
200lb weight reduction No A/C or P/S Alum T11 hood
E-Fan (Black Magic)
Wires
Bonez Clutch
Drag radials
TB mod and rerouted coolant line.
S-AFC

Future mods are ported TB tune my S-AFC and MZSP7 TRANZ , timing advance and MSD&Coil, gauges , seat , flywheel and low 14s.

 

I have yet to dyno my ride with the S-AFC b'c I haven't received It yet. Will be here by the end of the week. If thread Is still alive, I'll be glad to post my results.

 

By the way, I have my timing advanced too...

I didn't set my low settings. I was fiddling with it one day and made my car sound like a helicopter, got scared and I stayed away from it.

 

1k +6% (Idles a bit smoother)
2k -12%
3k -20%
4k -24%
5k -16%
6k -24%
7k -27%
8k -26%

I had a 10-1 a/f ration without the s-afc. Use at your own risk. CJ

 

PP13bnos? Thnx alot. Your profile doesent mention wich car its for. Don you have a S4 N/A with a mild street port? I think I would be able to use your settings but backed off around 6 points because I dont have a street port. Plus I have much greater A/F ratio to begin with because its a S5 car and the fuel burns my eyes.
Also PP13Bnos? whats your A/F% readings? and 40%low 80% high?
Silver Rotor? I will try and keep this thread alive until I post my findings as well so please type back when you get some. thnx everyone

 

'86 GXL, with cone intake, RB header, hi-flo cat, Trust cat back. Also MSD 6A box, and working 6th ports off the ACV relief hose.

Dynoed at 146 rwhp @ 7000 / 119 ft.lbs. @ 5600 rpm.
RPM / S-AFC correction / A/F ratio:

1500 0%
2500 0%
3500 -5% 14:1
4500 -5% 14.5:1
5000 -5% 14.2:1
5500 -10% 14.5:1
6500 -10 % 14:1
7500 -10% 13.5:1

Max airflow (from S-AFC): 63%

Curtis
'86GXL autox'r

 

Wow, is it safe to run NA's at/near STOICH throughout the entire powerband!!!!

Any TII would have go booooooooom, lol

 

Whats stoich and how much farther can a rotory go? 15:1 / 16:1 ??? I would also like to know about running stoich throught the powerband? thnx forum

 

This was for my 2nd gen. I made most power at 14.25-1 a/f ratio. I was seeing 54% on the dyno, and no i see a max of 61% or so. CJ

 

Interesting. Those are the most significant reductions I have ever seen on a n/a. Your fuel economy Is probably comparible to that of a Honda Civic now I bet.

 

My SAFC alf screen if you are interested

https://www.rx7club.com/forum/showth...threadid=92782

 

If i drive freeway with a less than a half a dozen first through 3rd gear 8.5k rpms runs, I usually get around 27mpg. I think that if i left my foot out of it for the entire tank of fuel, drove nothing but freeway, and shifted before 4k....I bet i could get 30mpg. CJ

 

Thats F-in awsome. I dont think I will be going that low , although Good to know my engine can handle it.

PPNOS or anyone? How do I know when Im at 14-1 a/f ratio without a dyno? If I hook up the blue wire to oxygen sensor what % readings should I see for that A/F ratio ?

 

u will never know how low you can go wihtout a wide band o2 sensor

 

Ok I installed my S-AFC but didnt tune it. I saw a 50.7% A/F ratio. I hope to gain 10points by tuning but I dont know. That would put me up to PPnos and he has a street port. We will see.

Also My sensor readings are In-1 3.8v in-2 .02v In-3 8.9v
Can somone tell me if these are to spec? thnx

 

The first reading is AFM voltage
2nd is O2 if you connect itto that
3rd is TPS

2nd and 3rd seems off

 

Excuse me. I meant 3.9 for TPS and like .02 or something for oxy wich isnt conected. It fluctuates a little. Actually all of them do. Are these readings ok?

 

Also im thinking that the A/F % is not directly related to how much power your car makes. You can have more % air flow but make less power than a car the other way around.