ECU Master DET3 Install and Setup on a 7MGTE (MK3 Supra)

I had several issues installing the DET3 on my 7MGTE and figured I could help some people get through the problems I experienced, A lot of the forum post and videos do not fully explain how to setup and install this tuner. more videos to come of MAF to MAP conversions and tuning.
Wiring Setup: 1:02
Software Setup: 3:02
ECUMasterUSA Wiring Diagrams for 7MGTE: drive.google.c...
MAKE SURE TO GROUND PIN 19 !!
If you have any questions I would be more than happy to try and help, I know this stuff can be frustrating since it is so old and people who have it figured out don't ever respond, if you do have a question, please post it in the comments so others now or in the far future can find this and any questions answered for all to see.
Disclaimer: I do not work for nor sponsor ECUMaster. just a dude trying to help other 7MGTE users. I do not take responsibility for any damage to your vehicle or ECU products.

[@jay-a80]

Thank you very much for the video! It's helped me get the DET3 up and running on my supercharged 1UZ-FE. I'm just waiting on getting my wideband O2 sensor installed, then I'll be able to get the fuel tuning sorted out and eventually move to off the MAF sensor to the MAP sensor.

[@TorettoPZ]

That’s awesome to hear! Glad this helped you!

[@danrooney3704]

Holy shit. I wish I new this a year ago. I never got it to read the maf and I gave up on it. I ended up doing a 1jz swap and i just got thw det3 up and going.

[@caterhamandcheese]

thanks for sharing this. cheers.

[@rodolfogana2508]

amazing, finally someone that makes a video on this 🤙🏽 im definitely trying this out, however the tuning portion will definitely be a no go lol i have no experience. do you think regular tuning shops can work with the software? thanks

[@TorettoPZ]

I dont have any idea, that would be up to the tuning shop. Most shops don't like piggybacks, this system is pretty easy to learn if you have AFR gauge and just go slow.

[@tojotaman88]

just installed det3 on my 7mgte and started it. it idles fine but when throttle is applied it wont rev, runs really rich and just shuts down. also engine light is on code 31. 🤔 i have grounded pin 19 on det3 and everything was running decently before det3 install

[@jacobgriffin2500]

Are you grounding pin 19 on the det3 unit? Or pin 19 on the 7mgte ecu? Thanks in advance!

[@TorettoPZ]

On DET3

[@jacobgriffin2500]

@@TorettoPZ thanks so much man! Setting up my 2jzge in my 4rumner and was running rich and throwing maf code! Gonna slap a ground on there and see what happens!

[@Duarteesi]

Really good content , just bought a 7mgte supra and I was thinking of buying a DET3 since I already had some experience with it and I liked it. What’s your engine setup ?

[@TorettoPZ]

Unfortunately I sold the car already after it was all done. It was a modest built 7m. Machined 20 over with CP Pistons, shot peened rods, mahle bearing, arp studs everywhere titan 2mm head gasket, BC cams and valves springs etc. Whole car was gone through.

[@Duarteesi]

@@TorettoPZ just bought a det3 for my 7M and really wished you made the MAF to MAP video, any chance you could shed some light on this ?

[@HR_M10]

You know your suff on this, my question is can you use to control an additional injector only ?

[@djfrankieflowers]

Hi. I got the frequency wired to pin 7 and 10. What should I select in the software to get the DET3 read the speedometer correctly? The engine is the 4efte Toyota Starlet Glanza V and the signal coming out the EXU SPD is a variable frequency. I hope that you can help.

[@TorettoPZ]

I would have no information on that, sorry.

[@ecuperformance959]

i have the same ecu on m43b19 Bmw e46 with turbo , i have limit with my maf ,can i work my maf with frequency in ? know my maf its on analogue in ,and i have another 1 question if i go in analogue 1 with tps and do it maffless will it work？

[@TorettoPZ]

Unfortuantly, these piggy backs vary greatly on different cars as far as setups go, are there some forums that may cover your issue?

[@aznbmxer182]

Hey so I did this and it worked great! For a few runs and today it won't stay on, turns over and bogs out..

[@TorettoPZ]

You need to tune the car correctly, this isn't a guide to tuning but a guide to setup, are you monitoring AFR?

[@aznbmxer182]

@@TorettoPZ yeah I am slowly making a fuel table now

[@aznbmxer182]

@@TorettoPZ I may have hit something wrong to cause the bog on the det program

[@user-mr5ye1rb4n]

Base map eku masters are suitable to start the engine on a 440cc and a fully factory engine?I've been looking for engine maps for a full factory motor for a long time now and to no avail. All maps are based on a 330kPa map load and 550cc+ injectors.

[@claytonholbrook7149]

Is there a way to undo everybting I did I watched your whole video and made everything like you did and now my car won’t start lol was going to put it back to the original settings but don’t remember what they were as I didn’t take pictures of before

[@jacobgriffin2500]

Do you need to change any settings for the pullup on pin 8? And if so where? Thanks again!

[@TorettoPZ]

No, no changes are required (or able to be made for that matter)

[@chente9109]

I need some help I have ecumaster det3 I can’t wire in my 7M ecu I only found a wiring diagram for 1jz but no 7M please help

[@TorettoPZ]

It is described in the first section of this video, with a wiring diagram included for 7M.

[@chente9109]

So I got it all wire in does det3 comes with a base maps for the car a tune the I can download for the car or I have to get it dyno tune

[@chente9109]

@@TorettoPZplease respond when u can the car runs but I want to tune it

[@DuckieKingg]

Did you ever make a video on afm to map conversion? Or could you make a write up for it ty!

[@reifpetrovicky8666]

Have you figured this out?

[@TorettoPZ]

​@@reifpetrovicky8666 @DuckieKingg I wish i would have seen this comment earlier. There are some write ups floating around that are really good. the only thing i can remember not working, was that you needed to unlock/lock the time table for the data logging then that would allow you to scroll around the datalog and then save the file required for MAF to MAP. If i get sometime, i can dig a little deeper. There is another comment that explains this process better. Should be the one right below this comment

[@wells2671]

Any thoughts on this working well with a 91 MK3 Automatic? I could go standalone, but for my power goals (450-500 whp) it would be overkill and from what I've read, very few standlones work well with the auto tranny.

[@perfectentrytrading]

det3 is good for an auto tranny because the stock ecu controls the tranny and youre free to adjust the fuel and ignition etc

[@scottchelmford7136]

Whats your engine setup? How do you compensate for larger injectors?

[@TorettoPZ]

Take away fuel.

[@christiantsevis1623]

I completed everything and it all works, now on the tuning stage. I try to log a drive and upload it to the fuel table but it changes every cell to -128 except for a few. Is there a setting or something that will fix this?

[@TorettoPZ]

Once the data log is completed, you need to disable it then convert it. Its a weird thing that ECUMaster requires. Right-click on the log and hit disable, then you should be able to scroll left and right to see the whole log. Only then will it convert properly.

[@christiantsevis1623]

@@TorettoPZ awesome thank you. I should use the convert frequency MAF to MAP setting correct?

[@thedelsolson8935]

I grounded pin 19 but I’m still running 10.0 afr and a code 31

[@TorettoPZ]

hmm, verify that you karmen vortex sensor is still good and all your connections are proper. did you make sure that your pull up is wired correctly?

[@gibronjamaludin3683]

Can this setup also work on a 2jzgte aristo

[@RamRam-wb9nw]

So basically log your drive and upload it to the det 3 and your fine?

[@TorettoPZ]

Yes and no, if you are referring to MAF to MAP mode, you will need to drive the car for a while with a wide range of driving to Include WOT runs and low rpm high load runs etc to cover all tables, then you need to disable logging to get the whole log then do the conversion...seems complicated but please let me know if you need any help with it and I'll try my best

[@RamRam-wb9nw]

@@TorettoPZ I'm looking to do this to a 2jzge for a NA-T build 98 lexus gs300 not alot of info the wiring doesn't seem bad just the tuning part

[@thatjdmkid8170]

Will it work with 2jzGE for 93 sc300 na T

[@TorettoPZ]

No since that's a completely different engine and car.

[@j-soulfilms]

Are you running stock ct26 turbo?

[@moisto_o3036]

The flutter sounds just like it so I assume so

[@carlodalmatto3380]

hi, I have a supra mk3 7mgte '88, I connected the det3 exactly as you described in the video, the only different thing is that I have not connected to ground pin 19, the car is fine only if I give the gas slowly, if I go in on / off mode there is a power cut, the supra locks, so I am forced to use the accelerator slowly, do you think that if I connect pin 19 to ground I solve? if you want to send me an email I will send you the scheme I used, hello and thanks

[@TorettoPZ]

Adding pin 19 is the quickest way to find out, it's super easy and requires no additional setup, I would try that first. If that does not solve your issue, it could be a multitude of other issues, tps, afm, ignition timing, etc. Do you have a check engine light on? Vacuum leaks? It could be litteraly anything without additional information.