EATUMM11

Is this really worth it for our car, and how is it in conjunction with the TRD super charger

tCUZZ

If it can pull timing then it might be a good buy.

WeDriveScions

It can't and it doesn't work on our car without a return fuel system and some decent tweaking.... Go Emanage or if you have to, Unichip.

fairladyz541

Are you sure it only works with a return fuel system........

WeDriveScions

It works on my car, just limited... unless you figured out the secret?

Still 1/4 as featured as the Emanage.

fairladyz541

I dont have any secrets, lets just say the car can get a full tune from 0-redline with the SAFC2. It cant do timing, but it can do a nice tune. You dont need a return fuel system either.

soros151

Then can u please tell us, how can u tune it from redline? and how much of gains are we talking about?

aramsey80

I have a AFC Neo. Its pretty sweet.

cdubber9

I think he ment 200 rpm to the redline. You can tune 12 points with the safc in 200 rpm increments. Theoreticly you can't tune 0 rpm.

Anyways, you can't "effectively" tune with the safc because the stock fuel pump has a fuel pressure regulator controlled by the ecu. The piggyback unit struggles to gain control over this making fuel delivery unstable. This is why it is better to use the safc in conjunction with fuel return system.

A DIY fuel return system would not be that difficult to make. I can tell you what needs to be done if your interested.

soros151

Then, can u do a DIY? or tell us how to with detail instructions?

cdubber9

I could do it, but that dosen't mean everyone can. You would need access to a welder, lathe, and mill or know someone who could do it for you.

What you would need to do first is take the fuel rail off and remove the injectors. Weld a male connector on the dead head side of the fuel rail that will connect to your fuel line fitting. Don't forget to drill out the end of the fuel rail after the fitting is welded on. Run that line to a vaccum controlled fuel pressure regulator that can be remotely mounted anywhere under the hood. Run another line from the fuel pressure regulator under the car, between the gas tank and up under the backseat where the fuel pump is located. Then take the fuel pump out, disassemble, and drill a hole in the top for the return. Use a 90 filling with a nut and an o-ring on each face for good seal.

Here's the trickey part, the stock fuel pressure regulator is located within the fuel pump assembly. You need to keep this forced open in order to gain constant control of the fuel pressure. You can mill a plug, weld it, or do whatever neccary to keep it open, but it must be wide open at all time.

Connect the fuel line to the fuel pump return fitting, plumb the vaccum line, dial in you fuel pressure, and tune accordingly.

soros151

Dang, I don't have a welder at hand, but the hardware to do this I can find. Humm... I'll see if I can go to a junkyard and find a tC fuel rail to experiment.

cdubber9

May as well grab a spare fuel pump while your at it. If you really interested, contact Sound Performance and see if you could buy a fuel reg. plug. I know they can make them.

soros151

I'll see to it, also I will see about getting the W

soros151

I'll see to it, also, are u talking about an aftermarket fuel pump, or a OEM fuel pump?

cdubber9

That's with an oem fuel pump. If you went aftermarket, you may be able to skip the plug part.

soros151

why?

cdubber9

Depends if it's self regulated or not.

soros151

okay okay, now I see.

toyotaracer9

why would u go through all of this trouble ? just get an emanage , its only a few hundred more then an apexi afc . not to mention im sure that when the vvti is changing the built in fuel pressure reg. is also changing .