4g63T ECU in 4g63NT - Possiblities?

[SlipknotSmoothi]

It may be silly, useless, and so on ... but I got to thinking:

What would the results be if swapped my 4g63n/t ecu with a 4g63t ecu. In the upgrade sections, I read its a bit of a different harness at the engine - A wire on the MAF, things like that. What if I added that harness and the devices that receive those connections? It would be a a full set up with out the actual turbo and associated mounting hardware (manifold, oil lines, etc). Would it start? Would it run terribly? Could it be tuned out to be great?

Some one educate me.

 

[92AWDHX40]

One thing at a time, you can read some more on your future goals.

 

[bud09]

the compression on the nt is 9:1 not 10:1. i have a nt and slowly collecting turbo parts, i'm mostly getting what i need from the classifieds. i'm thinking of going with an aem standalone unit. the 7th wire from the turbo is garbage and not needed it's just for the factory "boost" gauge. until i pull the engine to put in forged internals i'm planning on running around 8-10psi from a 14b, which is checked off on my parts list. i feel no reason to make much more than what they can put out with either a 8.5:1-9:1 setup

 

[1992 Eagle Talon TSi]

Dude thats already doing it: You make me sick ... and now I have to try some how to one up you.

Secondly, I remember reading that the compression is different, the turbo pistons would run like poop with out the turbo, and that the n/t pistons aren't designed to take the abuse of a turbo even though the compression would still support it, hence why you can find turbo ready pistons with the right landing clearance at the n/t compression ratio.

This isn't about half-way doing it, or cutting corners, or anything like that. It's simply me trying to understand why the ECU wouldn't be able to compensate for the difference between the two set ups.

Not sure what you exactly mean by me making you sick?

You can try to one up me if want, not really building and driving this car to show off a Frankenstein creation.

Also in-case anyone is wondering why I am using an afpr, its because I have a Walbro 255 in the tank. So my car ran fairly rich with the set up I had, so if someone else was going to do this set up you should be fine if you are using the stock fuel pump, as long as you use the correct fpr for your injectors and ecu.

P.S. I just checked my gas mileage after lower the fuel pressure. 36 MPG!!!

Im not trying to be a dick man,at all.
I kinda want you to have a backup like an safc just in case.

So then the parts list: manual 1g ecu,450 injectors,manual fpr,and turbo maf.Aside from the safc your talking 250$ in parts about,give or take. Guy whos done this? Aside from your fancy afpr, does this sound about right?

Boost piping,turbo,oil/coolant,exhaust,manifold,intercooler,bov and a few others would make the car almost a gst.

How far is Charlotte? I bet Miller Import Parts - Specializing in DSM's Has everything you want.

If you choose to use a manual ecu then yes you will need 450cc injectors, resistor pack and a manual fpr. The turbo maf would be optional and of course the knock sensor would be needed, although in theory you could run without it but the ecu needs it there to operate correctly.

But parts wise you basically got it covered, since my car use to be a turbo car my wiring harness was obviously set up for the extra wires. So it was all plug and play. But honestly if you go through all the trouble to get the parts, might as well go full turbo, I have the complete turbo set up for my talon sitting in my room waiting to be put on got everything I need for $100 (I had to pull it all), took me almost two years to find everything I needed in one place for that cheap. It will be going on this winter break.

 

[LandSpeed-DSM]

CTRL+F "Cam" - 0 of 0

Appears something fairly major is missing from this discussion..

 

[bud09]

i don't think cams are a big issue, if running low psi. i have cams on my list, looking at kelford 264/260. something that will work great for a 14b.

 

[1992 Eagle Talon TSi]

Well I am running 90' turbo cams, which from my understanding are the same specs as the n/t cams from 91'-94'.

 

[bud09]

i read before that the nt intake would be an upgrade for the turbo, but i know there's more into than just saying it's better by lift and duration, there's overlap, which someone more technical can go into.

 

[Bud92gsx]

The n/t and turbo manifold(intake) 4g are the same for 1g right?

 

[1992 Eagle Talon TSi]

The n/t and turbo manifold(intake) 4g are the same for 1g right?

They are exactly same, except there is one extra nipple on the turbo intake.

Not the greatest pictures but it's in the teens outside and my attic is also freezing (where I keep a lot of my extra parts).

Turbo intake manifold, extra nipple:

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N/t intake manifold, no nipple just a blank cast:

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[brane_97talon]

If you were to add the necessary electrical components, injectors and ecu from a turbo car , and keep your totally stock 4g63 N/A ( naturally aspirated vs forced induction) longblock, I believe you would still have a 140hp car with SOME gain in hp due to the the extra timing associated with the 1G turbos low 7.8 to 1 compression ratio. You would also be able to log and use a custom EPROM chip or DSMlink.

Also, unless I am mistake, you should be able to use any 1g DSM Datalogger with your car as it has the required OBD1 port and the MMCd program can be used on other makes of cars (Daewoo, Hyundai, etc). It will not be "tunable" however due to lack of an Eprom. But Ecmlink provides "NONEPROM TO EPROM" conversions, so I can only imagine that the same should be possible with the nonturbo, noneprom ECU.

My. 02. To the OP, hope it was insightful. Nice to see young ladies taking interests in Mitsu Motors!

 

[Bud92gsx]

Just drill a hole mits says..Looks like it worked.

 

[bud09]

i read a thread on here that when people switch to speed density they pick up power from freeing up the intake, so i think that would help if the conversion is done and leaving the stock internals until a rebuild. even if it is still nt i think a switch to speed density would be good.