safc1 installation
 

im finally ready to install my safc1 but I ran into acouple questions along the way. here is the link to the installation diagram http://www.alamomotorsports.com/apex..._safc_wire.pdf
trying to decide which I am suppose to use.
Im pretty positive I have the MA071. its a 1992 7mgte.
but anyway i was going with what fit me closest. would be the t5-a diagram. Now i know i seen posts about this before But cant find them for some reason. and supra mania new software is not yielding any results for my searching. lame.
second question is the diagram only states 7 wires. meaning I have 4 left over.. I can get that for other cars makes and models just wanted to double check.
any assistance would be helpful.

It all looks correct except for the connection directly to the right of the throttle line... according to the TSRM and the TEWD there is nothing there... It'd help if I could actually read what kind of pressure signal they're saying they're getting from there. The only thing I can think of would be the HAC signal except that in '89+ it was internalized.

Personally, I'd connect it the way they show in T5-b (What the hell's the difference between T5-b and c??? Man their diagrams suck.)... it's the same as the specified T5-a minus the mystery connection. The PDF appears to be incomplete as well.

The only lines you need are air pressure, throttle, RPM, power and ground.

SM is being upgraded.. THOROUGHLY, you may find it more effective to search the site with google for the time being.

it looked incomplete to me also. very vague concerning wire colors and there corresponding location in the ecu. I know for a fact that there were posts on these. I seen them. just cant seem to re-locate them.
http://www.xspeed.com.au/manuals/Apexi_S-AFC_manual.pdf
that gives different wire colors but no locations. bah.

The wire location in the diagram I said to use are correct. Yes, the PDF you first posted is incomplete as it is missing the Operation portion of the instructions (page 33 forward).

In case you're unaware the 7M-GTE uses a KVAFM (Karman Vortex AFM) and the 7M-GE uses a VAFM (Vane AFM); So, if you end up using different instructions make sure you use the correct instructions (KVAFM).

I suspect IGt and IGf (trigger and fall off signals). IGt is used for determining RPM, I can't imagine why you'd need a signal from IGf.

There are two different ways of communicating a signal (used by Toyota anyway), a frequency based signal (used on the 7M-GTE) or a scaled voltage signal (used in the 7M-GE). The pink is frequency and yellow is a voltage output.

Here's the manual from Apex'i: http://www.apexi-usa.com/content/pdf6135.pdf You want the diagram on page 44.

very good so now I have my wires labeled. what about the points on the ecu itself. using the first link t5-b there are points for rpm signal 1 and 2. but i have only one rmp wire. and the karman diagram on one you provided don't specify 2 rpm signal wires. or a splice / cut. like the air in/out any thoughts?

it says regular connection rmp 1
plural connection rmp2. what the heck does that mean?

Already covered that... you just need a signal from IGt. Look it up in the TSRM (EFI section). ;)

Do you have a wideband and gauge installed? If not don't make ANY changes until you get one installed or can have a shop tune it.

IGf is only really needed with ignition control systems.

It may allow you to see what airflow signal the ECU is getting from the meter, but it doesn't tell you at all how much fuel the ECU is actually delivering or how your changes are affecting it. You could always monitor the Vf feedback, but it's pointless in any setup that's remotely close to stock as it only provides feedback for closed loop operations and under certain rare conditions at WOT.

Portable wideband is the way to go as it allows on-the-go tuning. Get it close and dyno for for fine tuning if needed thereafter.

Just leave all the adjustments at "0" and you're fine. ;)

here is the pin for the ecu. and the wire diagram for Karman engines such as ours.

man I spent about 3 hours out there today. hooked everything up according to the print out and blah, nothing on start up and I had the all clear code flashing on my dash. maybe something wasn't connected as securely as it should of been. idk. but now im a little sad. cold and hungry. oh and my dash is still torn apart and I have to work at 6am tomorrow.
im including this link
http://www.snapdrive.net/files/91304...SAFR_MKIII.pdf
more informative then the others above.

You do still have to setup the SAFC's system for the 7M-GTE... you just don't touch any of the tuning specific settings.

There isent a chance I was looking at this thing upside down could I.? shoot I hope not. when i first accessed the ecu the sticker was facing me. that is me on my back looking up, hah. would looking at it this way be the top of the ecu? so I would of actually had the connections "flipped." that would explain it not turning on.https://www.t-mobilepictures.com/mya...&th=210&s=truehttps://www.t-mobilepictures.com/mya...&th=210&s=true
I used the diagram of the pinout above. and treated it as tho it was still plugged in. example. Rpm signal, first plug, top row, third from the right. and did the same. Unplugged the first harness. top row, grabbed the wire third from the right. (first harness being closest to glove box)

Just open the TSRM to the EFI section and locate the ECU pinout... use that and ONLY that to find the wires you're looking for. The diagram shows the pins as if you're looking into the ECU, so, for the plug you look at the back side where the wires run in. Shouldn't behaving any trouble due to things being flipped, there are pictures of the clips on the plugs so you know what end it up.... just unplug all three, solder/crimp in the new connections and you're done... this really is a 5 minute job... Your next one will be, I promise.

the problem definitely was with my connections. I went through again and made secure crimps using butt connectors and heat shrink. wrapped all the connections in electo tape and used male / female connections for the air pressure connections. held my breath and turned the ignition key on. boom got lights. stays on and reads correctly. hopefully the links and diagrams and the trouble i went through will be helpful to someone else as green as me to install this unit correctly.
now to go put my glove box back together .
-regards

ps. you can clean this up and remove all the ranting. might make a good faq thread.