Maf Translater Pro - Toyota Nation Forum : Toyota Car and Truck Forums

SupraTuned · 06-07-2009, 01:23 PM

My Maf is really giving problems now again, and I wanted to see if anybody is running a Maf translater pro on their car. I am not going to buy a new maf just to put something like this on later anyway. Any issues with them? Or else I am just going to buy the AEM standalone EMS that is plug and play

Jeeves · 06-07-2009, 03:37 PM

To even bring up the AEM EMS in the same sentence as the MAFT Pro is foolish. I am running MAFT Pro right now. However the plug and play standalone is $1800 (Though it may have been superseded by the series 2 plug and play which is $2100, I don't know offhand). Maft pro? I think my setup was sub $500.

And unless you really know what you're doing with a standalone, they're not for everyone (Hell, not even the MAFT Pro is for everyone, I'll readily admit the TunerPro software is a royal pain at times).

SupraTuned · 06-07-2009, 03:50 PM

Yeah, I figured they would be. I know that the two are completely different, and the ems has nothing to do with the maf so to speak. I just don't feel like buying something for 600 dollars that I am only going to run for a short while. And trying to sell a used maf is like trying to sell a boat with a hole in it. I don't want to really tangle with to much tuning, but I would probably tune it to stock specs if at all possible. I just think I would have the potential to use the maft more than just another stock maf sensor.

***bgrieger*** · 06-07-2009, 09:53 PM

Actually they are related engine management solutions, but the AEM for your purposes is like a sledge hammer to kill ants.

I'd look to the MAFT however in your situation, unless you can find a cheap used one. As you said, nobody can sell a used one for jack, and you might just take advantage of that!

Jeeves · 06-08-2009, 01:11 AM

I was going to reply, but it would look like Bob's post.

You're talking about solving a problem based on aftermarket options, but those options are normally used to make power that is limited by the stock platform, not get around a broken MAF. Spending $500/$1800 to return to a stock tune seems like a poor idea in my book (though I don't know your goals at all.)

The EMS is definitely the sledgehammer approach, the MAFT Pro is definitely the much much much smaller hammer with a harder to grip handle.

SupraTuned · 06-08-2009, 03:39 PM

Well, I'm at about 270 right now, I'm looking to go as far as 350 hp and call it good. I would probably use the pro for mild tuning here and there, but I don't really want to sit and change every ratio. Otherwise, what about the vehicle specific translator? It still allows for modifying ratios for larger injectors and turbo applications, which I will be doing later down the road. I guess what I am trying to ask is this; how hard is it to put in the maft pro,(wiring is not an issue for me) set it up for stock parameters for now, with a gm maf sensor, and wait until later to do what I want to do? I would be new to the whole tuning thing, but are there base maps for the stock or at least close to stock settings that I can download? I just don't want to lean out or something silly like that and screw my engine. I have a few things I want to do before I start doing major tuning. The aem standalone is 1200 for my car, but I don't think I really need that. I know those are capable of speed density as well, although I'm not sure I want to go with a speed density setup anyway.

Jeeves · 06-09-2009, 05:17 PM

Largely the way you'd be wiring up the Maft Pro you'd be leaving the TCCS ECU to handle the below 68% throttle driving, and then the MAFT Pro would tag team in for the boost. Ideally you wouldn't even run it with a MAF at all. It's best when you convert the car to Speed Density (Using a pressure sensor and a temp sensor) rather than bottle necking the turbo pre-inlet.

When it comes down to it you're really going into it for the functionality of two things:

1) Tuning it down for the bigger injectors.
2) Tuning it up/down for more boost.

Since you don't know what MAF/MAF-less you'd be ding with #1 it's kind of an issue. #2 you could essentially do with an S-AFC which can be had for $120. As far as I've read into the manual for the MAFT Pro, it can convert for MAF's and it can do Speed density. Personally, I know which I prefer and which I'd tell you to use. But you'll need to confirm that whole translating for MAF's business.

SupraTuned · 06-09-2009, 05:58 PM

Well that sounds like something I would like to do. I am still a little nervous about the tuning though. I can safely admit that I have never tangled around with adjusting mixtures and what not in an efi system before. I guess right now I am not ready with a larger turbo and injectors. I planned on doing those things next summer. I would however, like to have the system in and and ready. How difficult will it be to adjust speed density for close to stock for right now?

Jeeves · 06-11-2009, 06:33 PM

For speed density, you basically buy the setup that includes the pressure sensor (It's a standard GM 3 Bar pressure sensor) and a temp sensor (also a GM Part if I recall correctly), drill/tap places to install them (or T-into the vacuum line in he case of the pressure sensor). Tap a few wires and splice a few others and you're off to the races.

In going to speed density you can essentially tell it to make no corrections as well. The biggest thing to remember/keep in mind between the MAFT Pro and the AEM EMS is that it's doing two things: 1) Converting the system from MAF to SD, 2) Sending That signal to the ECU in place of the MAF signal, and then 3) [b]Piggy Backing[b] any corrections that you make to the signal. So, if you need to subtract 25% because you got 25% larger injectors (550cc -vs- 440cc) it makes that correction to the signal, then sends it to the Factory Toyota ECU. The AEM EMS replaces the entire Toyota ECU, you have to tune the WHOLE car, not just make little adjustments. Naturally there are base maps to help out there, but you can guess the complexity of that system.

It depends largely on which year your car is, but here's a wiring diagram by CRE for a 1987-88 supra:
[img]http://www.**********s.com/supra/maft/8%20-%20Vehicle%20Specific%20Info/MK3%20Supra/1987-1988/87-88%20Wiring%20Diagram%20Rev.%202.1%20(CRE).jpg[/img]

The three resistors (on the right) are there to prevent the stock ECU from throwing two error codes. The Stock ECU turns on faster than the MAFT Pro does, so it goes "I DON'T SEE THESE SENSORS!" and throws codes. With the resistors in place the codes don't appear. But as you can see the wiring is pretty simple. There's a few more wires I'd suggest if you want to do proper tuning using a wideband O2 sensor though.

SupraTuned · 06-11-2009, 07:57 PM

I can handle that no problem. I actually like doing wiring, it makes sense to me. I think I will be able to handle this fairly well. I might as well go with it since its a much bigger bang for the buck. How do you like it so far?

Jeeves · 06-12-2009, 11:14 AM

The hardware is great, and the support for the hardware is handled through a guy named Bob over at Full Throttle Motorsports. He's a good guy. However, if you need to tune it (which can all be done through the keypad and display, but imagine trying to do that on a two-line, LCD display, 4 button interface... ugh.) is best done through a software package called TunerPro by a man named Mark Mansur. I've been told that the next version is in the works with MANY updates. However, the current version has a decent learning curve to it and a few "gotchas" that you have to be mindful of. Once you get the hang of it, it's relatively easy to use and decently powerful. Like all tuning solutions, the biggest thing to keep in mind is that you very very easily can destroy a car with it. If you don't have a wideband O2 sensor to tell you ur Air fuel ratios tuning willl be near impossible.

It should also be stated that the MAFT Pro does -not- remove fuel cut this is a hard limit put in place at an incoming air frequency (Hz) in the Toyota ECU. It can't be tuned out. The Maft Pro can act like a Fuel Cut defender but I've posted MANY times about how dangerous these devices are.

SupraTuned · 06-12-2009, 11:39 AM

Yeah, no no I don't intend to run more than 7 pounds right now. I am still in break in for my engine as well. I will go the wideband route for sure, but can I hook the o2 straight away up to the unit, or do I need anything else to accompany the sensor? It sounds like I will be taking small steps with it, but I am used to being patient with these kind of things.

Jeeves · 06-14-2009, 04:37 AM

A wideband O2 usually comes with some type of display or tool to manage the information. While you can just buy the sensor, you can't just plug them into anything.

So, I guess to answer your question, No you can't just buy a WBo2 sensor and plug it in. They have much larger plugs and the data has to be handled and converted. This plug will go back to some type of management device. These are made by Zeitronix, AEM, Innovative, etc. Often they will have several wires. One will be the 0-1v out simulating the normal O2 so that you could wire it back into your car, and the other is the 0-5v out to your device that needs the wideband information. This wire would go to the MAFT Pro.

Here's my OLD wiring diagram, it's not totally accurate now, but it shows the wiring for a Zeitronix Wideband unit. It also looks a lot more complex because I've drawn the wires for the sensors (temperature and pressure) on there that don't really need to be drawn because they're plugs, not individual wires.

http://www.**********s.com/supra/maf...TargaRose).gif

SupraTuned · 06-14-2009, 01:20 PM

So I would probably need the Zt2 system then, wouldn't I?

Jeeves · 06-15-2009, 03:37 PM

No. That's just My wiring diagram. If you look at the tech specs for any wideband manufacturer and they all are quite similiar. It's typically a matter of preference (in features) or price. The Maft Pro also works with a pretty wide number, but it does have a selective list. Not ALL Widebands work on the same scale. You would want to visit the manufacturers site for the Maft Pro and look at what the list of Wideband controllers currently supported is, then find your preferred one from that list.