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Quest for a poor mans 2jz


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#1 Andrew

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Posted 20 March 2018 - 09:15 PM

So i have my 1.5 jz running and idling\ revving good.

(rebuilt 2jzge bottom end,refreshed 1jzvvti head with aftermarket turbo and manifold)

 

but its running to rich and carbon fouling the plugs.

I was hoping to make this setup run on stock jzx100 ecu ect.. since i only want high 300's low 400's horsepower wise.

but ive talked to a few people and the jzx100 ecu isnt going to allow it under boost/load and that it will lean out and cause problems.

 

So my next step in this quest is that i was going to get a 2jzgte vvti ecu and just use the stock jzx100 harness by matching pinouts and try run that with side feed 440's.

 

has anyone done anything like this? any pro tips? would everything work in unison like TPS etc? 

 

Or is this me just trying to take the cheap route like always and i should just get a standalone. 

 



#2 Jacob

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Posted 21 March 2018 - 03:38 AM

Stock Toyota ecus are better than standalones within their power range, which is within most anyone dollar range and transmission limits.

It's almost as expensive in dollars/effort.

I'd rather a blitz tuned jdm 6spd 2jzgte ecu over most anything else.

There are a lot of "na-TT" tech write ups out there.
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#3 Demesio

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Posted 21 March 2018 - 05:55 AM

post pics of your disaster so i can see your intake setup.



#4 WhoreMouth_Jr

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Posted 21 March 2018 - 08:55 AM

I'm pretty sure that guy Jeff (jzsjeff on IG) in Oregon was running a jzx100 ecu. 
He was running a VVTI NA-t 2j which is kinda sorta basically what you have.  I think he made pretty good power 430@18 or 19 with only an safc if I remember correctly.  But I think his torque was a little low: 330.  Word on the street is that it was slower off the line than a stock vvti1j.

 

There are tons of dudes out there running small singles on stock ecus but I can only really recall most of them running non-vvti.  If it were me I would just go stand alone, but like you said that ain't always budget friendly unless you have a solid dude near you that does megajizz.  I would want to be able to exploit any potential advantage as possible. (Honestly biggest regret is not going vvti) I'd say my ECU is just as reliable and even safer (fail safes on fail safes) than a stock ECU.  But what do I know I wasn't able to keep my car in 1 piece for more than a couple weeks at a time.

 

I got 99 problems but not one of them is my engine or management hah.


 

why do we spend our time and money on shitty cars that cant love us back?

 


#5 battleaxe

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Posted 21 March 2018 - 10:34 AM

Vvti head and manifold would be top feed tho? I didn't know vvti heads went on non vvti blocks? I learned a new! Then all the jz bottom ends are the same within family 1j same and then 2j same?


Toyota ECUs are fine so long as u take out the boost and fuel cuts and there's no mystery tune on the computer to fuck with you as you try to tune

#6 Demesio

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Posted 21 March 2018 - 01:47 PM

The deck heights are different... they literately got a 2jz block and machined off like 1/2 inch (in laymen's terms)

 

 

mafs are picky, just close off your air filter and it should help quite a bit.



#7 Andrew

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Posted 21 March 2018 - 10:58 PM

Jacob: Exactly my argument, i want to keep stock ecu because i'm not trying to get crazy power just have fun and "reliability".

 

Demesio: I just have open Compressor at the moment, but i have a janky 3in intercooler pipe with a MAF and filter on it.  

 

Whoremouth:  I wonder if the guy with the na-t vvti 2jz had stock headgasket. hmmmmm maybe all i need is a SAFC. I know people make 400 on stock vvti 2js with only single conversions but vvti 2j's have 440's and map sensors 

haha thats what i want, at least you have a solid engine and management. 

 

I just want to drive this damn thing and stop working on it... im just scared this jzx100 ecu is going to blow my freshly built motor and ill just be out of money.

 

Thinking i should make the vvti 2jzgte ecu work with the stock map sensor and try and replace my top feed 370's with side feed 440's.

or just standalone this stupid thing, Link? AEM? gahhhh out of budget, out of time, out of patience. Im blaming everything on the stupid hoonigan sticker on my tool box.

 

 

39141556440_03526aae0b_z.jpgUntitled by profilebmx18, on Flickr

 

40056899565_b5c98019ef_z.jpgUntitled by profilebmx18, on Flickr



#8 battleaxe

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Posted 24 March 2018 - 10:48 AM

standalone would fix all your problems.

regardless of what you do, you need to get it tuned. a proper tuner would cycle your car properly to make sure the afr's and knock are all in check. if theyre good, rev by rev, you can then push it. i would get some proper top feed injectors, look into the bosch ones, theyre cheap and plentiful.  downgrading to sidefeed is just stupid. nickel and dimeing is fine for some stuff, but get a proper computer and then you wont be limited to your mix matched setup. with a nice ecu you can cobble whatever parts you want for cheap and then alter the settings, instead of hoping the oem ecu knows what bullshit you did.  if you had a stock setup that isnt mix matched, go oem. its simple and works. and the safc will correct it enough to have a functioning motor.



#9 Kyle

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Posted 25 March 2018 - 10:35 AM

Standalone wont fix the problem, if you have problems. There is ZERO reason it shouldnt run right. The problem is youre running 1j injectors. Throw some 550 top feeds and run an safc and call it a day. The pulse to injector time is the same on 1-2j gte, the difference is physical flow of injector. Put the right injectors in and the thing wont freak out 100%

battleaxe, the ports on gte 1j are same, vvti lower runners is cheap way to go topfeed without aftermarket fuel rail and fittings, and can also go the other way with 440s. I ran aristo side feeds on my vvti 1j with holset and emanage because I had it laying around.
Maybe it's a cultural thing? I mean, we saw the British coming. India, they did not.

#10 battleaxe

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Posted 25 March 2018 - 11:38 AM

i guess im just unclear as to all the pieces on this make shift jz setup. just saying standalone would connect the dots on whatever youre running for ignition and fuel



#11 Jacob

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Posted 25 March 2018 - 06:03 PM

Toyota mix and match
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#12 hantavirusx8

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Posted 25 March 2018 - 07:29 PM

It should run on the 1J ecu without problems. MAF is actually on your side here, it should fuel the extra displacement accordingly not like a MAP setup that will run leaner if you add displacement. If you do decide to go standalone Link is awesome and easy to use. Okidriftjr and I are pretty familiar with Link if you have any questions



#13 Andrew

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Posted 28 March 2018 - 06:30 PM

Kyle enlightened me a bit so i'm probably going to run the jzx100 ecu with bigger injectors and some kind of piggy back to take the edge off. 

(revs higher and will be just fine)

 

Since i'm a noob to piggy backs ecu's do you guys have any preference when it comes to these? 

 

I'm looking at a Greddy Emanage Blue or a Apexi Neo.

 

I like how Emanage has alot of adjustable points and seems super simple as i can just tell it my new injector size and i figures out most of the stuff for me but it might be kind of hard to fine tune since i don't have a dino.

 

On the other hand the apexi is small like a little mp3 player and seems like it might be easier freeway tuning it with my AEM wideband.

 

Decisions decisions... 



#14 battleaxe

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Posted 28 March 2018 - 08:37 PM

apexi stuff....tremendous amount of user maps out there and easy to change on the fly



#15 Jacob

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Posted 29 March 2018 - 03:57 AM

I thought the apexi-neo had a pretty bad rap?
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#16 Demesio

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Posted 29 March 2018 - 05:14 AM

Trying to budget.. you are going to nickle and dime yourself into a shit situation. Save up some money and do it right... ONCE. you're going to save time and money.



#17 Kyle

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Posted 29 March 2018 - 08:55 AM

NEO is just fine, more resolution than the other SAFC/VAFC out there, though an SAFC2 and VAFC2 both work fine and are cheaper. Emanage blue is super meh, and emanage ultimate is kinda a hassle. Search for my emanage thread on here and give that a look, but it does work decent after its sorted and Ive ran 1000cc injectors and had almost 30mpg on a two hour trip with that setup.

What a lot of you guys arent understanding is that the jzgte ecus other than euro/usdm use the same injector pulse width and that they account for the extra volume by physical injector size. Like the dude said earlier, the MAF in this case will help it idle, but its still gonna freak out under load because it registers that the values dont match what it thinks should happen.


Demesio, STFU. Just because you were completely fucking retarded at one point doesnt mean other people are as dumb as you were. Nigga you hooked your fuel lines up backwards. Like how in the fuck is that even possible?!
Maybe it's a cultural thing? I mean, we saw the British coming. India, they did not.

#18 Demesio

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Posted 29 March 2018 - 10:02 AM

hahaha fuck me, right?

 

I'll just go back to driving my car that needs nothing but oil changes, rear tires, and sweet ass E85...

 

carry on.



#19 Kyle

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Posted 29 March 2018 - 11:35 AM

Thats all Andrew will need with the right injectors. Not everyone needs 500whp boo
Maybe it's a cultural thing? I mean, we saw the British coming. India, they did not.

#20 hantavirusx8

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Posted 29 March 2018 - 08:40 PM

Are you running GE pistons and GTE HG in your 1.5J? If so compression is getting up there and pulling fuel with the SAFC will advance the timing further. If you sold the jzx100 ecu, MAF sensor, and used the piggyback money you could go standalone and not worry about it blowing up or not running right. https://xcessivemanu...om/monsoon.html






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