Upgraded 1NZ injectors

[JustDidIt]

I posted this question in my own thread in the boosted section but didn't get any responses. So I thought I'd repost it here...

Anyone know the actual specs on the 1ZZFE injectors? I've heard an array of answers on the CC range.

Looking at these - both listed for the Toyota 1.8

23250-22040

http://i.ebayimg.com/images/g/ztYAAOSwDNdV3833/s-l500.jpg

vs

23250-0D050

http://i.ebayimg.com/images/g/5zgAAOSwiONYM0gw/s-l500.jpg

Anyone know the difference? What are most people using when they are attempting to upgrade their current 1NZ injectors?

[CrankyOldMan]

Green:
http://www.witchhunter.com/flowdatapix/d2325022040.jpg

Blue:
https://monkeywrenchracing.com/product/toyota-oem-fuel-injector-1-1zz-blue/

Not sure of the actual reason for different part numbers. Possibly spray pattern or internal resistance? Maybe just color coded to keep them separate on the production line?

[Fluxtasy]

someone did a review & comparison:
https://bobistheoilguy.com/forums/ubbthreads.php/topics/3887106/(Green_vs_Blue)_Injectors_for_

I've also switched my orange injector to the jap blue ones. I did notice they were a bit smoother on idle and better fuel consumption during highway travel

[JustDidIt]

someone did a review & comparison:

https://bobistheoilguy.com/forums/ubbthreads.php/topics/3887106/(Green_vs_Blue)_Injectors_for_



I've also switched my orange injector to the jap blue ones. I did notice they were a bit smoother on idle and better fuel consumption during highway travel



Interesting.. Thx! Wonder if it really is just the spray pattern or the +5cc difference ? The green ones have more YW user reviews but this blue review intrigues me.

[Fluxtasy]

Interesting.. Thx! Wonder if it really is just the spray pattern or the +5cc difference ? The green ones have more YW user reviews but this blue review intrigues me.

oh yeah my orange injector has the same nozzle pattern as the blue ones. Possibly the cc are about the same too. My mechanic did mentioned that the cycle duty are probably different.

[Bluevitz-rs]

I needed this info too. Thanks for the info everyone. I'll make sure to look for the blue injectors then.

[JustDidIt]

How do these look? These are "flow-matched"...

http://m.ebay.com/itm/Denso-Flow-Matched-Fuel-Injector-Set-for-Toyota-Pontiac-1-8-23250-22080-4-/190808129210?nav=WATCHING_ACTIVE

[David C]

Are the 1.8L injectors intended to be used in the Yaris 1.5L 1NZ engine ?


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[MugenRep]

Very nice info! Not sure how I missed this initially in either section. I'll be upgrading now that I have a path for a turbo on my 1NR-FE.

[JustDidIt]

Are the 1.8L injectors intended to be used in the Yaris 1.5L 1NZ engine ?


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Intended... no. But for boosted 1NZ applications and other performance modifications, the 1ZZ injectors have shown to help performance.

[CrankyOldMan]

Intended... no. But for boosted 1NZ applications and other performance modifications, the 1ZZ injectors have shown to help performance.

I upgraded to the green 1ZZ injectors to keep from going lean with my Blitz supercharger. If you have a proper engine management system, you can just tune the fuel map to compensate. The Blitz comes with a really basic piggyback that just makes the ECU go into open loop mode, which just dumps a ton of fuel to ensure it's not running lean. Bigger injectors = more fuel = lower AFR under boost. Not terribly elegant, but safer than running lean and breaking things.

[David C]

Intended... no. But for boosted 1NZ applications and other performance modifications, the 1ZZ injectors have shown to help performance.



Thanks


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[Bluevitz-rs]

Just as a reminder, what's the 1NZ injectors rated at for CCs so I can make the adjustment in the FIC?

[JustDidIt]

Just as a reminder, what's the 1NZ injectors rated at for CCs so I can make the adjustment in the FIC?



I don't have exact.. but I've read 200-210cc. It's the same part number for the 1NZFXE as it is for the 1NZFE

[Bluevitz-rs]

an interesting page I found regarding the flow rate and injector response time for the 1NZ injectors. Unfortunately they don't have the 1ZZ injectors listed.

Link (http://injector-rehab.com/shop/lag.html)

[JustDidIt]

Nice -

1NZ: 200cc 19lb/hr 14ohm

[Bluevitz-rs]

I can't remember what I have my response time set to but I'm going to change it to about 500us. My idle seems seems to be very rich as my fuel trims are always very far into the negative area and it crank on cold starts longer than it should.

I'll report.back when I get around to it.

[Bluevitz-rs]

I don't know why but I had it set to 850us. That would explain the long cranking and poor throttle response when hot. Moved it to 526us. I'll have to check my fuel trims now. Did it just before rushing out to work.

[JustDidIt]

I don't know why but I had it set to 850us. That would explain the long cranking and poor throttle response when hot. Moved it to 526us. I'll have to check my fuel trims now. Did it just before rushing out to work.
Where and what are you using to adjust this?

[Bluevitz-rs]

Where and what are you using to adjust this?

AEM FIC

[Fluxtasy]

I've switched over to the 1NZ blue injectors a few months back and was running fine without issues.

I recently installed a used muffler and have been using it for over a month now. I did noticed a noise usually when RPM is below 2k. Could this noise be that the fuel mix is running lean? maybe the ignition timing advancing/retarding?

Strange that this noise did not occur till the muffler change. Any thoughts?

[ncp13]

Could it be a bad mufler ?

Switch back and check:confused:

[Fluxtasy]

lol I don't think it is the mufler. Could it be possibly a faulty injector? Is there anyway to check?

[Bluevitz-rs]

Link to a comparison post I made. (http://www.yarisworld.com/forums/showthread.php?t=57915)

[Fluxtasy]

Link to a comparison post I made. (http://www.yarisworld.com/forums/showthread.php?t=57915)

but what if there are no signs of physical damage?

[JustDidIt]

Were they used and flow tested? .. or just used and not tested?

[Bluevitz-rs]

Used, not flow tested. They all work fine. If i started it and there was signs of misfire or hesitation I would have pulled them out again.

I did clean them with carb cleaner and compressed air before installing them.

[JustDidIt]

On my NHW20 Prius, supposedly if I put it in maintenance mode, the ecu can learn new fuel trim. I've never verified this...not sure if the 1NZFE cars have that capability... or it works if I swap injectors.

[Bluevitz-rs]

Yeah the ECU is continuously learning. Depending on what year the car is and what ECU it runs depends on how fast it learns and how much range of control it can compensate. Mine's an '05 and STFT can go + or - 20%. I think the newer cars have a bit more control than that.

[ncp13]

@ fluxtasy

Did you check the solenoid resistance cold on the injector ? 14ohms cold if i remember correctly .

[Fluxtasy]

@ fluxtasy

Did you check the solenoid resistance cold on the injector ? 14ohms cold if i remember correctly .

Actually I've just found out the culprit for the cause. Previously was using another brand of Ron 95 fuel and have now switched over to Caltex and no more knocking noise!

Unbelievable but that previous brand of fuel was superior to the others as they had the lowest sulfur content but now they have compromised quality for profits.