3VZE 3.0L V6 4-hole upgrade fuel injectors. BS?

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I bought them but have been hesitant to install them. My 4runner is already running rich and I'm worried that those injectors might make it worse.
(BTW, my in-laws live near you in Marsing)
 
I installed a set a little over a week ago. Haven't really had a chance to make a post about it yet, but so far, I've been very impressed by them. My idle is noticeably smoother and i definitley see my power in the low to mid rpms. 1800 - 2300 range always bogged down. Its significantly better now. Can't tell you about mileage because honestly, I don't ever pay attention. As far as the 4 hole vs 1 hole.... who knows. It sounds logical, but honestly, the question you should ask is "are newly cleaned and balanced injectors better than the 20+ year old ones I have in there now"?
 
rolling blackout said:
Crash, did you install the grey or the orange injectors?
Click to expand...

Mine were more of an almond color.

a>~original
 
RiFF RaFF said:
I say 'Snake Oil' until someone posts some actual dyno results 'before and after'.

:gun4:
Click to expand...

The 4 vs 1 debate to me is similar to the same debate with spark plugs. The theory sounds plausible enough but difficult to determine real world effects. Is a V tipped plug better than a single element plug. What about 2 seperate elements....or 4.

Dyno's are too one dimensional to really give much benefit except for WOT applications. What about throttle response? Mileage? Low/Mid range performance? Even then, which dyno gives the best real world results. There's several types with different physics supporting them. Even if you dismiss all of that, you'd only get supporting evidence if you also had a brand new set of factory service injectors to compare them against.

Here's what it came down to me. Are these an upgrade to 25 year old injectors whose been through who know what. How much down time to pull injectors, let the truck sit while I send the injectors out to get cleaned and balanced, if they even can, get them back, pay for all new groments and o-rings (which btw are over $50 from toyota) and then get them back in the truck? Whether or not, if 4 holes is an upgrade over 1 hole, I have no downtime, new seals/orings, cleaned and balanced. THat's worth the money right there. If there is a benefit with the 4-hole.....bonus!

BTW - here's what 25 year old injectors look like! I can't even tell if all are original, which ones are or not.....all seals cracked and dried. To me... my truck runs much better than it did. I don't need any other scientific research to make me feel good about my choice.

WP_20140510_003_zps3b461d37.jpg~original
 
Zorlac said:
Hi,

these are those yellow injectors?

:wow:
Click to expand...

Yeah, supposedly they're a newer design. I got mine through Flame Throwers though but they look identical. If you read further down the description, it does say they're for all years of the 3.0 (89 - 95).
 
I bought reman/balanced injectors at the same time I got my remained motor.

But thought if they really did improve MPG & HP, then I might buy them when I get to the 500 mile brake in on the motor. Even though they said I don't have to retorque my heads, I'm still going to. So that would be a good time to swap them, if worth while.
 
I put a set of FlameThrower injectors in my engine during rebuild. The engine was bad when I bought the 4Runner, so I have no point of reference for comparison. I'm certain the injectors were stock pieces, as in the pictures above, the tips were all cracked, broken and missing.
However, I've had no problems with them. The install was straight forward and included all required parts.

Just my $.02
 
crash813 said:
The 4 vs 1 debate to me is similar to the same debate with spark plugs. The theory sounds plausible enough but difficult to determine real world effects. Is a V tipped plug better than a single element plug. What about 2 seperate elements....or 4.

Dyno's are too one dimensional to really give much benefit except for WOT applications. What about throttle response? Mileage? Low/Mid range performance? Even then, which dyno gives the best real world results. There's several types with different physics supporting them. Even if you dismiss all of that, you'd only get supporting evidence if you also had a brand new set of factory service injectors to compare them against.

Here's what it came down to me. Are these an upgrade to 25 year old injectors whose been through who know what. How much down time to pull injectors, let the truck sit while I send the injectors out to get cleaned and balanced, if they even can, get them back, pay for all new groments and o-rings (which btw are over $50 from toyota) and then get them back in the truck? Whether or not, if 4 holes is an upgrade over 1 hole, I have no downtime, new seals/orings, cleaned and balanced. THat's worth the money right there. If there is a benefit with the 4-hole.....bonus!

BTW - here's what 25 year old injectors look like! I can't even tell if all are original, which ones are or not.....all seals cracked and dried. To me... my truck runs much better than it did. I don't need any other scientific research to make me feel good about my choice.

WP_20140510_003_zps3b461d37.jpg~original
Click to expand...

Crash - Did you pay for your set or was your sent to you free to test?

What kind of mileage are you getting now?

True on the dyno...but at some point a dyno will pick up more HP when you hit that "one dimension" that you say...right?

Just curious.

Thanks
 
I was a guinea pig for his new tan injectors.

As far as gas mileage, about 1-2 mpg better since the switch.

As far as the dyno, its possible to see some difference but there's so many factors that play into the numbers and would give you so little information back, I don't think it would be worth the time or money to set it up right.
 
If you had just used seafoam... just kidding
I see they also make them for the 22RE, has anyone tried them? Iv got a first gen and a second gen and im sure the injectors on both are original.
 
3VZE 3.0 Fuel Injector Question

Aloha from Hawaii! I've been working on my 94 pickup 3.0 3VZE, I just replaced some leaking valve cover gaskets. While in there, I did a resistance test of all my fuel injectors, and they are all within spec. However I noticed all of the connectors (from ECM) had their clips broken off (previous owner), but they all still sit well on the injectors. I was planning to do the zip-tie trick to hold them, IF the injectors were still good...I then noticed all of my injectors can rotate (when still installed in fuel rail and intake, as the FSM says they should upon installation), except one which is definitely stuck. Does this indicate an issue with that injector? Also, they are all pretty gunked up and I don't know how old they are. To send them all to a shop for proper cleaning and testing would cost me more ($20-$25 per injector) than just purchasing a set of refurbished injectors off EBay ($100 for 6 Denso OE single-hole injectors, same as what i got now) Any suggestions as to cleaning the injectors myself? Or which injectors to go with if I just replace my old ones? Would the 4-hole injectors be too much for my truck since its been running on the single-hole type for its 20 year life? Mahalo (thank you) for any advice and help!
 
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