Ecumaster forum

Hi everyone,

Can anyone help me out with which pins to use to connect it and what else is necessary to convert the MAF to map, do I need resistors?

I kinda have an idea on which pins to use but it is great to get some assistance.


Your help is much appreciated.

Can you be more specific about your setup?

720cc injectors

SP59 turbo (old school 59mm)

WALBRO 416

car has an SAFC, I want to get rid of it, I figured out the pin out, But I do I need a resistor to pull up the signal?

I can figure out the pinout to wire it in.


The set up tables is what I am having difficulty,

Fuel table

Modify:??????
Load:??????
Correction #1?????
Correction #2?????

Ignition table

Modify: Analog 1
Correction#1: Analog #3
Correction#2: Analog #4



The ignition table I copy the 1JZ setttings. It's the MAF setting I don't know.

I am a little bit confused on wiring this now

is this correct?

I want to wired in the DET3 to convert the MAF to MAP...

I think this is the correct way to wire in the USDM MKIV Supra

WIthout knowing the year, and if yours is JDM/USDM (I'm assuming USDM because you have a MAF). But I need to know 100%.

94 bro, it's a maf 0-5 volts. I will update this thread on a proper install, I was truly brain farting over thinking this stuff

Sounds good! Your install looks correct btw.

One last question, How do I clamp the stock map sensor the USDM MKIV Supra runs?

So I figured out how to wired in the maf into the DET3, I figured how to convert the MAF to MAP, the issue I might encounter is the fuel cut that controlled by the stock
MAP sensor.

Maybe I am overthinking this???

Once you go to MAF to MAP it will automatically clamp it. I'm sure it'll take a bit of fudging though.

Jostar wrote:One last question, How do I clamp the stock map sensor the USDM MKIV Supra runs?

So I figured out how to wired in the maf into the DET3, I figured how to convert the MAF to MAP, the issue I might encounter is the fuel cut that controlled by the stock
MAP sensor.

Maybe I am overthinking this???

You can unplug the hose to that, you only need to clamp the MAF. You clamp the MAF in the "Analog Outputs Configuration" menu. You'll need to know the upper limit for MAF voltage, and you'll have to do that by logging the DET3 while you hit fuel cut, then you'll set your Max voltage to a value under the voltage that triggers fuel cut.

WHPZach wrote:

Jostar wrote:One last question, How do I clamp the stock map sensor the USDM MKIV Supra runs?

So I figured out how to wired in the maf into the DET3, I figured how to convert the MAF to MAP, the issue I might encounter is the fuel cut that controlled by the stock
MAP sensor.

Maybe I am overthinking this???

You can unplug the hose to that, you only need to clamp the MAF. You clamp the MAF in the "Analog Outputs Configuration" menu. You'll need to know the upper limit for MAF voltage, and you'll have to do that by logging the DET3 while you hit fuel cut, then you'll set your Max voltage to a value under the voltage that triggers fuel cut.

Thanks Zach, I already had unplugged the hose to the map sensor, I think the MAP sensor is what triggers the fuel cut.


I got the car running and it is tuned.

Customer is enjoying the car on MAF, I will reach out to you when I need to convert the MAF to MAP.

Does anybody has some basic map for 2jz-gte, just did single turbo conversion and i did take maf sensor away. I would need some basic map so i can drive tune place where they adjust. Any change? Or just install maf back on car and runs that way?

agumi wrote:Does anybody has some basic map for 2jz-gte, just did single turbo conversion and i did take maf sensor away. I would need some basic map so i can drive tune place where they adjust. Any change? Or just install maf back on car and runs that way?

Install the MAF back!!

What size turbo did you install? I tuned a MKIV small single turbo car on the DET3 on piggyback mode.