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ecu question
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Author:  slowdsm [ Fri Jul 08, 2016 5:28 pm ]
Post subject:  ecu question
i just want to confirm if this will work.. I have a 61t with 1.8 head (ups the comp)..650 inj.. and evo3 16g... when I swap it into my van what ecu would be best to run? right now im using a 90 dsm with werewolf speed density (that I want to save for my next swap) so I will need a ecu.. I do have a 2g maf to go back to non speed density setup.. I was thinking a stock 1g ecu and a safc for tuning?.. or would it be better to just get some 550s and use the 2g maf and call it a day?

also I have a 89 vr4 ecu (same as th4e 90 dsm).. that is socketed but no chip.. does anyone still make/burn chips?


Steve
Author:  Flying Eagle [ Fri Jul 08, 2016 8:11 pm ]
Post subject:  Re: ecu question
Everything mentioned can and would work, from any EPROM ECU of the 1G/Galant VR4 4g63 variety.

SAFC will be a compromise, any piggyback device will also be compromise.

I would suggest like most now, that any recent version of ECMLink (from 2.5 to 3.0) is your new best friend.

What sensors and harness will be used?

I suggest link with an EPROM ECU for many reasons, all of which are going to get you better driveability and smooth out your timing curves.

I might suggest finding a 3G Montero/3000GT "482" MAS to couple with Link.
I was just reading that all the MAFs like the 2G 609 and EVO 399 and 3G 482 shape used the same electrics but they were tuned with different air horns to match their intended useage. Running a 3" intake snorkel from a filter to smooth out incoming air before entering the sensor honeycomb would be the most ideal combination to realize minimum flat spotting in your timin Maps from modified or higher output setups because of excessive turbulence through the MAF. Also, never clean your MAF sensor with sensor/brake cleaners. They are coated and not like GM hot wire sensors.

The 482 sensor also uses a 1G/4g61t intake snorkel type fitting that is right around 3-1/8" diameter. Perfect fit on my 4g61t snorkel but the snorkel hits my other intercooler pipes pretty badly, so a 3" OD intake snorkel that came with the Jon Reimer M&S Recycling setup is the next option. Problem is, there is currently no recirc option plumbed in yet. Oops!
I'm on the fence.

Forgot to mention the 3G flows with the least pressure drop and nearly, nearly identical to the EVO 399 sensor. In fact they are the same housing just a slightly different air horn.

There is a thread on everything you need tonknownabout the 3G MAS that I found last night. Googled it, very very informative.
Author:  slowdsm [ Sat Jul 09, 2016 3:45 am ]
Post subject:  Re: ecu question
thats just it I dont want to use a socketed ecu if i dont have to.. i want to spend as lil money as possible to get this running.. and not have to worry about tuning it.. just drop motor in and go..

on a side note a friend offered me 1500 for it.. i countered with 2000.. will see what happens.. he really liked it.


Steve
Author:  j2dapo [ Mon Jul 11, 2016 11:19 am ]
Post subject:  Re: ecu question
What are your goals?

The 399/482 MAF is good if you want to go past 400 hp; otherwise a regular 2G maf will work. Heck, a 1G MAF is a upgrade compared to a 4g61 MAF.
Author:  slowdsm [ Mon Jul 11, 2016 1:12 pm ]
Post subject:  Re: ecu question
less than 300 with this one.
Author:  thomcasey [ Tue Jul 12, 2016 7:14 am ]
Post subject:  Re: ecu question
If you are going 2g MAF, I recommend EVO 560cc injectors. The "deadtime" is identical to the stock 450cc turbo injectors. Tuning will be easier and it will run better.
Author:  j2dapo [ Mon Jul 18, 2016 1:30 pm ]
Post subject:  Re: ecu question
Why don't you just run a stock 1g setup them? turbo/injectors/MAF/ECU/FPR/...

Otherwise you'll need a programmable ECU to do the tuning.
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