Rev3 1G-GTE and Apexi SAFC-II

**Karma Supra** · 22-03-2007, 12:47 AM

Anyone here run this setup????

My SAFC-II seems to be reading half the revs it should, and I have gone through the setup a couple of times and all seems correct... anyone else had this??

I can correct the rev reading by setting it to three cylinder mode, but (maybe I'm imagining it) the car doesn't seem to run as well, (I know the 1UZ engines need to be set to 4 cyl mode to work properly)

I just want to at least get it all monitoring and working properly before I get it properly set up on a live road map!

Any suggestions??

**sideshow** · 22-03-2007, 02:02 PM

maybe you have connected the rpm wire to the wrong spot

is the rpm wire on the ig- wire that comes from ignitor

maybe you hooked it to the crank angle sensor which might be half the pulses u need

**Karma Supra** · 22-03-2007, 11:26 PM

Nope, All wired in correctly as per the manual (although there are two RPM signals on the ECU, it does not specify which one to use) I assumed it was because the pistons fire in pairs.. Therefore reading as a three cylinder... (there is no aditional note to say run it as anything other then 6 syl)

I was hoping someone who has actually run this setup on a rev 3 1G could help shed some light!

I have installed a couple of these before on other cars and never had a problem!

**Karma Supra** · 27-03-2007, 08:31 AM

I can't believe no one has run this setup!!!???

**JustCallMeOrlando** · 27-03-2007, 08:43 AM

sideshow is correct, I'm guessing you have it wired up incorrectly. There is nothing special about the tacho wire for the ECU, check it again, it's usually black with brown bands.

**Karma Supra** · 27-03-2007, 06:02 PM

Ok cheers guys.. I'll recheck it.... While I'm at it I think I'll swap the AVC-R from reading the injector duty back to revs for ease of setup....

**sideshow** · 27-03-2007, 07:56 PM

safc suck thats y i never use them on customers cars
save money and buy a full aftermarket

hehehehe

bloody japs love their piggyback stuff ive seen cars for 4 fuking piggyback shit and wonder y things fuk up

anyway without looking at yr setuphard to se whats wrong

like i always say diagnosing on forums is like finding a needle in a hay stack

could be a million and one things

**Karma Supra** · 27-03-2007, 09:06 PM

SAFC-2 is fine for my needs, I don't have huge power apirations as the car is a cruiser....

I'd be suprised if its wired in wrong to be honest as I have never had any problems before, its just this is my first 1G one, but its always worth rechecking

Does anyone know why they show two different RPM feeds to the ECU, and if they are the same signal? Just out of curiosity..

**VeeP** · 27-03-2007, 11:42 PM

ok iv got an an SAFC on my gen3 1G. . .

if u still cant get it workin ill check mine maybe u wired to the wrong RPM signal. . .
as well . . . do u have the wiring diagrams for them?

**Karma Supra** · 13-06-2007, 10:46 PM

For the sake of the search engine, I got around to looking at it last night (slow I know lol) It WAS wired correctly as per the wiring diagram to RPM1, I re wired it to RPM2 and it read correctly. So if anyone is wondering which of the two RPM pins to use on the Apexi wiring diagram, its No. 2.

**Stomps** · 14-06-2007, 11:23 PM

haha, thats good to know, im about to wire a SAFC2 to my 1ggte... good to see you got it sorted mate...

Stomps

**MR 1JZ** · 15-06-2007, 10:30 AM

I just saw this now karma...we had the same problem with my 2JZGTE when we installed the SAFC II, we used RPM signal 1 and it was reading about 1/4 of the revs...so we changed it to RPM signal 2 and it worked 100% fine

**TheToyman75** · 15-06-2007, 11:26 AM

Just saw this thread. I guess I'll be getting Mos to swap that wire on my AVC-R tonight

It had exactly the same problem but works perfectly set to 3cyl mode so I hadn't been concerned about it. Thanks

**Karma Supra** · 15-06-2007, 05:22 PM

No worries..... At least it wasn't me losing the plot! But you gave me bad rep!!! lol

I am still getting odd AVC-R speedo signals, but thats another niggle for another day....

**pato** · 16-06-2007, 06:44 PM

i have the same problem on the neo in my 1g
i just leave it set on 3cylinder mode and i dont have a problem, i was concerned about this at first. but i read somewhere that on toyotas with the apexi piggy back stuff.. the rpm will read at a weird rpm if set up correctly, so u have to set them to have half the amount of cylinders, thats why the 1uz is meant to be set up with 4cylinders