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4g63T ECU in 4g63NT - Possiblities?

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SlipknotSmoothi

SlipknotSmoothi

15+ Year Contributor
93
63
Feb 24, 2011
Fayetteville, North Carolina
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. :thumb:
 
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The results I never tried it, I cant see any gains from It the car is still non turbo, get the turbo set up and youll have a turbo car. I see no gains, maf pins are different for starters.
 
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I wouldn't expect there to be much in the way of gains, actually. Nothing is wrong with the ECU that is there ... but what if I was on an upgrade path to a turbo install? I'd have to do it eventually. Even a stock, virgin n/t ECU could stand to be tuned to an optimal setting for the environment it lives in - but that can't be done on the n/t's.

If I could get some one to confirm that it would at least still run, I might consider doing it in the name of science. LOL
 
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It may start but run not sure, I cant see anyone wanting to try it, if it ran , for how long, and how far, again I cant see why you someone would do it, like putting a ecu from a non turbo into a turbo car expecting any gains. Pointless to me. It seems like that choice is asking for problems, try it in a car and get on the road and your car dies, then your stuck on the road or cause a accident all for experimenting but that's just my opinon.
 
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If I happen to find one at a salvage yard, I think I'll grab it. I'd LOVE to have a turbo set up ... but I'd rather have my engine completely solid prior to it. And seeing that the n/t already leaves me with such ease on breaking traction, I'd really rather attempt an AWD conversion before adding much more in HP. I've been searching and reading on some one that has done it here ... didn't sound like something any one would want to do twice, if at all.

It just seems like if you were going to bother logging a n/t, you'd at least want the ability to program it compensate for what it has, providing that all sensors and such are functioning within spec. The difference between a T and a N/T should be as simple as the absence of the turbo. I don't, and want to, understand why.
 
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It will work and your car will run just fine, as long as you swap the injectors to match your ecu and the maf you will be golden. I have 30,xxx on my rebuild using all factory turbo parts while running n/t. My car was a factory turbo car so the wiring harness was already there as well as the ecu, maf, etc...Though there are no gains unless you plan to upgrade in the future, I get around 34mpg with my set up, running the stock tune that's programmed in the turbo ecu.

If no one believes me I can get proof, pictures, videos etc...
 
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34 mpg? That's... pretty impressive. I did my swap in the spring, rebuilt I only get about 21 on average.

Hmmmmm....

Did you use the stock turbo manifold and just block it off or just go with a N/T one?

Also, iugrad92turbo, if your post about that benefiting me, please realize I'm not a he. :)
 
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SlipknotSmoothi said:
34 mpg? That's... pretty impressive. I did my swap in the spring, rebuilt I only get about 21 on average.

Hmmmmm....

Did you use the stock turbo manifold and just block it off or just go with a N/T one?

Also, iugrad92turbo, if your post about that benefiting me, please realize I'm not a he. :)
Click to expand...

I get 33-34mpg with my street tires on and 30-33 with snow tires. I drive it 120 miles a day for school, hasn't failed me yet. I am also using a turbo transmission, so it is geared a bit higher. I am not running stock turbo compression or stock n/t compression, I am running around 9.5:1-10:1 (I didn't buy the pistons, so I don't know the compression exactly, but is higher than stock). It was built over two years ago, so nobody remembers the compression ratio...:hmm:


I am assuming you are talking about the exhaust manifold? Or are you talking about the intake manifold?

I am using a n/t aftermarket header for the exhaust and for the intake manifold I was using a turbo one with the extra port blocked off, but one of the throttle body bolts stripped out so I swapped it for a n/t one.

Also I am using a n/t fuel pressure regulator, not sure if that needs to be done, but I was having issues with the turbo one.
 
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I have a lot of people who don't believe my car works the way it is set up, especially when I pop the hood and prove it's running with the turbo parts that are on it (not really sure what's so hard to believe). I even argued with a guy for a good solid thirty minutes about my car, he was saying its impossible and could never run, I would have fired my car up and proved it, but I had my truck with me and my talon was an hour away sitting at home.ROFL
 
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I figured I would add one last piece of information, in-case anyone is ever searching this topic and finds this thread. I was previously running a n/t fpr and as of last Friday (15th) I picked up a full throttle speed afpr and currently have it set at the turbo fuel pressure (27psi with the vacuum line attached). Car runs alot better than it did with the n/t fuel pressure (was running a tad rich, especially at full throttle, found that out the hard way on Sunday when I had it on the dyno, started blowing out black smoke like a diesel above 6000 rpms). Can't wait to see if my gas mileage gets higher than 34mpg! :D
 
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SlipknotSmoothi said:
There are so many similarities, I don't know why they didn't just, almost literally, unbolt the turbo and fit the intake/exhaust to match.
Click to expand...

Ok this is where ill start..Why they didnt unbolt the turbo and do the n/t versions that way.Well thats because the 1g turbo runs 7.9 ish:1 compression.The n/t 4g is probably somewhere around 10.3 10.5:1 range.The car would be a dog, it would have no power at all.Just all around crappy performance doing it that way.

Secondly why nobody has been like WTF dood suprizes me.If your gonna do it, do it right.Get all the parts for a straight up turbo addition.Yes the maf needs another wire or whatever but if your gonna do it, dont half ass it and be broke down, down the block.
 
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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.
 
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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 http://millerimportparts.com/ Has everything you want.
 
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Don't forget about having to add a knock sensor and wiring, add one wire for the Maf and solder turbo Maf plug on, and and wire in an injector resistor pack.
 
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And pistons, for the part list.

Its not that far, but I've done business with Miller before and he's not the guru I was led to believe he was. We still have all the parts we got from him that did not fit the n/t, such as the flywheel, the 2g TB he said was for the 1g, among some of the items. I do most of my business with Cape Fear PickNPull now, they're about 2 hrs out.
 
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Bud92gsx said:
So then the parts list: manual 1g ecu,450 injectors,manual fpr,turbo maf(add 1 wire),knock sensor,and resistor pack for turbo injectors.
.
Click to expand...

Second thought before i escape back to cod. Thats just the parts list for the turbo ecu in a n/t 1g. Wait till you start replacing stuff,and noticing well that looks like crap.Ok well lets do this too while im here.

SlipknotSmoothi said:
Oh, my mistake.
Click to expand...
Not a mistake man.Just more like your getting waaaay ahead of yourself.
 
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