rx7male

hey guys... can some one help me out here... is it possible and what are the pins on the ECU for me to install it... any help would be great... thanks

Cory

PS...

cars a 1985 gslse
just got a safc-1 (not the 5 knobber), the one with the arrows

d0 Luck

nope. it's not gonna work on the GSL-SE. web777 and i tried it already. the AFM voltage read out is entirely diff. from the SE compared to other fuel injected cars

FB II

yep, put it on ebay cause it's not gonna do you any good.

88t2romad

ill take it off your hands

rx7male

so theres no way i can install it? is there another model that will work like the safc 2? or something... like why wont it work... can someone explain to me in details as to why...

jimmdog

I think the AFM reads analog like a dimmer switch on your house and the others use a Hot wire (non Moving) afm But its just a guess Good luck getting it to work

rx7male

umm... d0 luck... any ideas as to why it doesnt work...

Chemical

I'm trying to figure this out as well..

I'm thinking its because the gsl-se AFM reads 0-12v while most flapper AFM's read a different voltage range?
Somebody confirm this plz..

(PS..for the electrical gurus, is there any way to modify the voltage signal??)

rx7gslse

FWIW, the GSL-SE AFM is a 0-12V setup, but then again... So are lots of Mazda's (liek the miatas... )

What is required (at least for the Greddy e-manage) is a 1Kohm resister on the AFM signal to correct for the 12/5V differece.


Do a little net research on wiring up an E-manage/SAFC on a later model miata and you'll see. There is no reason the same fix wouldn't work on a gsl-se, BUT I don't kwo of anyone who has done it either.

rx7male

have they worked on the miata?

FB II

all the miatas here run map ecu. nobody wastes their time with an safc. i still say sell it and put that money in to a real performance upgrade.

rx7gslse

yep... Most go with the e-manage due to the ability to control timing as well, but it's the same concept for both...


but yeah, the MAP ECU is pretty cool too.. just costs more

steve84GS TII

I agree,the SAFC is a pretty worthless item,more for monitering values than making any real changes,especially on an air metered EFI system.Speed density systems will respond better to the AFM since there is less going on and all the airflow values are stored in the ECU.Metered air systems rely on the AFM to give real time info on airflow, and the SAFC,screwing with that input, is more likely to cause harm than any real improvement.This has all been argued to death for years over at the TeamFC site.Youll notice VERY few guys making any real HP improvements over stock,are bothering with a SAFC.

rx7male

well the reason i want it is to control my fuel... ]to make sure i'm not going to run lean in my top end... cuz when i go to turbo my block thats what will kill me... and blow up my engine is the lack of fuel.... and i dont want to go completly stand alone... my only other option was to get mega squirt but i'm a tard when it comes to that kinda stuff

steve84GS TII

Screw the AFC.If you wanna run a turbo,use a turbo ECU, dont expect the SE ECU to be able to handle it.
The 2 680cc SE injectors will never be able to flow as much fuel as the 4, staged 550cc turbo injectors.Run a S4 6-port intake,itll bolt up to the SE block easy enough.With it you can run the 4 TII injectors and a TII ECU.The TII ECU is setup for boost so you wont have to lie to it with an AFC,and your injectors will not be pushed beyond their safe duty cylce,trying to feed a turbo 13B.

rx7male

well i aint going to be boost high... like maybe 6 lbs... thats it... but with the megasquirt it should be able to handle the extra little power from the turbo... and its not like i'm using a huge *** turbo... i'm using the S4 stock turbo and manifold... so its not going to create lots of power... i'm not doing this mod for power i'm doing it because you dont see alot of SE engines turbod... so its for originality... anyways... thanks for the input i'll be thinking about that too... thanks

Cory

PS more input would be appreciated guys... thanks

steve84GS TII

Just FYI......
6.2psi is all the stock S4 TII engine runs with its T18 and (4) 550cc injectors.Look how much bigger everything is on the stock S4 TII (AFM,injectors,intake)compared to the stock SE,just to push the factory 6psi.The SE hardware is inadequate.....
Your looking at roughly a 50hp gain with no increase in fuel delivery volume.Two 680cc's aint gonna cut it without exceeding 85% duty cycle......

rx7male

wont a safc or megasquirt help with that fuel delivery and a FPR should help somewhat too... and plus i'm getting 700cc injectors so... maybe that will help or should i go a pit bigger?

FB II

well the fact is, you still only have 2 injectors. tII's have 550'sX4. so the total volume is well over your two 680's or even 700's. better step up even more, or add two injectors

rx7male

well do i really need those extra injectors cuz i mean i aont going to be boosting high... so ... i mean with the safc telling the injectors to keep the fuel up i think it should be fine... sorry i just think differently...

moremazda

iTrader: (4)

You are in the right place to get info on turbo charging your car. Unfortunatly all the information on this board will not do you any good unless you begin to comprehend the information.

d0 Luck

if you want to use the SAFC that badly, you can use the S4's AFM unit and integrate it. it's not a direct swap since there will be splicing of wires and sautering involved.

web777

You can run 5psi on a SE with a upgraded fuel pump and Vortech FMU. Any more boost and you'll lean out.

steve84GS TII

The SAFC will make the injectors stay open longer,which will deliver more fuel.Problem is,you can only hold the injectors open for a certain amount of time before they overheat and burn up.Its called duty cycle and if you exceed 85% duty,the injectors wont last long.Youll go lean when they do fail, and you could pop your engine when that happens.
Since the SE has only 2 injectors,they must deliver all of the engines fuel,all the time.On my S4 and my S5 TII engines,I saw up to 80% duty with the STOCK ECU and injectors.Its a safe bet that the SE injectors are ran up to the same duty levels on a stock SE setup.To safely support 5-6psi of boost,your gonna need a lot more fuel on top of that.The 2 680cc injectors will run out of duty cycle well before you match the 2200cc delivery the 4 stock TII injectors supply.
You can increase the fuel pressure to increase delivery manually,but that only works to a point.Too much pressure and the injector pintle will have to work too hard to overcome the fuel pressure.This will actually decrease the amount of fuel delivered, since the injector will be straining to open/close.

Think what you like,Im just trying to warn you ahead of time.Ive been running a turbo setup for 5 years now.They need lots of fuel,and they are VERY intolerant to bad tuning,especially with rotaries.

rx7male

yea all that makes sense... what i was thinking i was going to do on the safe side was swap in a s4 t2 upper and lower intake manifold and fuel rail (with 550cc injectors)... and use that with megasquirt with the gslse ecu.... how does that sound? better?


ps would those bolt on fine?