The 3.4L TRD Supercharger Thread

[koda4]

Here's page from instructions.

 

[DJRodriguez88]

1999 4Runner 5vzfe
Black TRD Supercharger (2nd gen i guess?)
URD 7th injector kit
190 lph pump (<10k miles on it)
Reman Injectors from Motorwest (<25k miles on them)
IK22 plugs


Recently finished my head gaskets and timing belt/water pump.
It idles great and revs up perfectly with very light throttle.

As soon as I give it enough throttle to actuate the bypass valve and build boost it stumbles hard and shows a p0171.

So far I've checked around for vacuum leaks by spraying brake cleaner around, found i had the throttle body gasket mis-oriented so i fixed that but still having the same issues. Next weekend i'll borrow my friend's smoke tester and see if i can find any other vacuum leak.

The other thing i've tried is replacing the MAF sensor. It's a autozone duralast model with lifetime warranty i got 2 years ago so it was worth a shot. No change in behavior.

Besides looking for potential vacuum leaks, anyone got any other ideas about what i can look for? I'm also planning on checking fuel pressure after i get to the junkyard to get a spare high-pressure hose.

EDIT
Actually, after I finished my head gasket i found i had a coolant leak under the intake manifold because of the pitting around the coolant jackets... i THINK this problem started after i went back in and fixed that. It's also possible that the coolant i was burning (it was kind of a lot) contaminated my 02 sensor

 

[gh25_]

Supercharger questions

Hey supercharger dudes got a question for you guys.

So I am planning on saving up my $$$ and splurge on a new Magnuson TVS1320 supercharger their latest one for my 5vz. I was wondering if it would be a good idea to upgrade some fuel delivery for the supercharger. I know Magnuson recommends to replace your fuel pump if you haven't before, before installing the supercharger. I also know that I should change my spark plugs to two step cooler ones as well as changing the thermostat to the 170 degree one. I've been doing some snooping around seeing what upgrades people have been doing with their superchargers. I want to stay stock ECU / tune and everything but I was thinking about doing a higher flow fuel pump and a set of some higher flow injectors. Would this be a good idea / result? I don't plan on adding the 7th injector URD kit or anything like that, but after some supercharge research it seems like a better fuel pump and injectors would be a good idea, along with the other upgrades. I'll attach some links to the stuff I was looking at. Would any of this be worthwhile or pointless? I live in California so to pass smog I can't add any of the super fun stuff for the supercharger like the stuff URD makes. I want to keep a stock supercharger setup besides of course the injectors and fuel pump like I mentioned. Thanks!

- GH

Set of 6 Reconditioned OEM Genuine Denso Upgrade Fuel Injectors for 92-02 Toyota Lexus 3.0L 3.4L | MotorWest Performance

AEM 340LPH In Tank Fuel Pump

Deatschwerks DW100 In-Tank Fuel Pump, 5VZ, 3RZ, 2RZ - Underdog Racing Development

 

[anniesball72]

Magbusson TVS

I suggest you read this.

http://https://www.toyota-4runner.org/3rd-gen-t4rs/311724-new-magnuson-tvs1320-available-3rd-gens.html

I’m in CA also.
I have URD 7th and 2.2 pulls. No problems with .

 

[gh25_]

I suggest you read this.

http://https://www.toyota-4runner.org/3rd-gen-t4rs/311724-new-magnuson-tvs1320-available-3rd-gens.html

I’m in CA also.
I have URD 7th and 2.2 pulls. No problems with .

hmm... I'm clicking on the link but it's not working.

Also how are you passing smog with the 7th and the pulley? On URD's website says "Legal in California only for racing vehicles, which may never be used upon a highway". Doesn't say anything about it being carb exempt as well.

 

[anniesball72]

TVS link

hmm... I'm clicking on the link but it's not working.

Also how are you passing smog with the 7th and the pulley? On URD's website says "Legal in California only for racing vehicles, which may never be used upon a highway". Doesn't say anything about it being carb exempt as well.

Sorry about that. Try this
New Magnuson TVS1320 Available for 3rd Gens

Yes no issues with smog for over 10 years now with URD 2.2 pulley and 7th. Ca smog is a visual inspection and OBD II looking for all green lights with no check engine.
I’ll admit the pulley is a stretch. I had mine painted black so it doesn’t stand out.
Use the correct CARB sticker in the engine bay and all is good.

 

[phattyduck]

Also how are you passing smog with the 7th and the pulley? On URD's website says "Legal in California only for racing vehicles, which may never be used upon a highway". Doesn't say anything about it being carb exempt as well.

If you can make it look like it is either stock or part of the CARB approved supercharger kit, you won't have a problem with smog. Its always a risk though.

I wouldn't suggest changing injector size (much) without some tuning solution to take care of the change in size.

-Charlie

 

[gh25_]

Sorry about that. Try this
New Magnuson TVS1320 Available for 3rd Gens

Yes no issues with smog for over 10 years now with URD 2.2 pulley and 7th. Ca smog is a visual inspection and OBD II looking for all green lights with no check engine.
I’ll admit the pulley is a stretch. I had mine painted black so it doesn’t stand out.
Use the correct CARB sticker in the engine bay and all is good.

Haha thanks for the link I was able to find that thread from the title of the link though. I ended up reading that whole thread and by the time I was done my head wanted to explode lol... I was always under the impression the supercharger you could just drop it on and be good. I didn't know you still have to invest more to get rid of things like the low rpm ping. I mean I just want to run it stock for the most part. But seeing the gains from the 7th injector kit. It seems worth it.

 

[gh25_]

If you can make it look like it is either stock or part of the CARB approved supercharger kit, you won't have a problem with smog. Its always a risk though.

I wouldn't suggest changing injector size (much) without some tuning solution to take care of the change in size.

-Charlie

Thanks for the advice Charlie. And so for the injectors basically even if I do get ones that can shoot more out it would be kinda pointless without tuning for it to be able to use that extra amount of gas that's being spritzed out. Is that correct? I wasn't thinking of anything crazy big say like those URD ones lol. Those Motorwest upgraded denso ones I linked they don't specify exactly how much more flow rate they do over stock 3.4L injectors. So not sure if those would fall into not too much bigger haha.

 

[gh25_]

So after reading this thread last night

New Magnuson TVS1320 Available for 3rd Gens

I gained a lot of useful knowledge about the old supercharger unit and the new tvs1320 one. It was interesting to learn that the new unit makes the AFR leaner than the old one. Which I also learned isn't ideal right? So, If I want to have a good time with this supercharger bolt it on set and forget and enjoy the power with no problems like pinging and stuff, and keep my engine's reliability and longevity. If I get the URD 7th injector kit for the tvs1320 which comes with everything needed like the upgraded fuel pump and cooler spark plugs. Along with the cooler 170 degree thermostat of course. So, just with those things would I be good to go? Don't need to worry about anything. I want to keep the stock 75mm pulley btw.

 

[phattyduck]

Thanks for the advice Charlie. And so for the injectors basically even if I do get ones that can shoot more out it would be kinda pointless without tuning for it to be able to use that extra amount of gas that's being spritzed out. Is that correct? I wasn't thinking of anything crazy big say like those URD ones lol. Those Motorwest upgraded denso ones I linked they don't specify exactly how much more flow rate they do over stock 3.4L injectors. So not sure if those would fall into not too much bigger haha.

I just went back and checked - the specific injectors you linked are factory flow rate. The "upgraded" part about those is that Motorwest has found some coil failures on the original injectors over time and those are supposedly better. They are still two-hold Denso injectors that have otherwise factory fit and performance. It would be the same as getting your stock injectors cleaned and flow balanced, basically.

If you put in higher flow injectors, the ECU will just adjust down how much injection time to match what the engine needs, up to a point - then it will throw a check-engine light and cause lots of other problems...

-Charlie

 

[DJRodriguez88]

Also how are you passing smog with the 7th and the pulley?

Last time I got a smog check the guy didn't mention my supercharger or 7th injector at all, but he did mention the ebay cold air intake =p
Exhaust gas values all measured within acceptable levels so it's all good i guess :nod:







Still trying to figure out my current issue tho...

The truck idles well and revs smoothly when you give it a small amount of throttle but when you open it enough to activate the bypass valve and build boost then it almost feels like i'm hitting a rev limiter.

It doesn't just fall flat the way it does when the TPS is going out, it starts bouncing off an imaginary limiter at 3-4k.

So far I've:

• replaced MAF
• check for vacuum leaks
• check crank bolt

My wires/plugs/injectors/fuel pump/fuel filter are all <25k miles old

 

[gamefreakgc]

1999 4Runner 5vzfe
Black TRD Supercharger (2nd gen i guess?)
URD 7th injector kit
190 lph pump (<10k miles on it)
Reman Injectors from Motorwest (<25k miles on them)
IK22 plugs


Recently finished my head gaskets and timing belt/water pump.
It idles great and revs up perfectly with very light throttle.

As soon as I give it enough throttle to actuate the bypass valve and build boost it stumbles hard and shows a p0171.

So far I've checked around for vacuum leaks by spraying brake cleaner around, found i had the throttle body gasket mis-oriented so i fixed that but still having the same issues. Next weekend i'll borrow my friend's smoke tester and see if i can find any other vacuum leak.

The other thing i've tried is replacing the MAF sensor. It's a autozone duralast model with lifetime warranty i got 2 years ago so it was worth a shot. No change in behavior.

Besides looking for potential vacuum leaks, anyone got any other ideas about what i can look for? I'm also planning on checking fuel pressure after i get to the junkyard to get a spare high-pressure hose.

EDIT
Actually, after I finished my head gasket i found i had a coolant leak under the intake manifold because of the pitting around the coolant jackets... i THINK this problem started after i went back in and fixed that. It's also possible that the coolant i was burning (it was kind of a lot) contaminated my 02 sensor

When the supercharger was removed, did you lift it by the bypass actuator or get dropped on that side? The actuator can leak pretty bad if it did break. Would be consistent with your codes. Coolant leaks don't normally throw any sort of code so I would be surprised if that fixed it.

 

[gamefreakgc]

So after reading this thread last night

New Magnuson TVS1320 Available for 3rd Gens

I gained a lot of useful knowledge about the old supercharger unit and the new tvs1320 one. It was interesting to learn that the new unit makes the AFR leaner than the old one. Which I also learned isn't ideal right? So, If I want to have a good time with this supercharger bolt it on set and forget and enjoy the power with no problems like pinging and stuff, and keep my engine's reliability and longevity. If I get the URD 7th injector kit for the tvs1320 which comes with everything needed like the upgraded fuel pump and cooler spark plugs. Along with the cooler 170 degree thermostat of course. So, just with those things would I be good to go? Don't need to worry about anything. I want to keep the stock 75mm pulley btw.

The 7th injector will be perfect for what you are describing. Just be sure to let them know when you order it that it is for the TVS rotors and not the old rotors. Make a big difference because of airflow rates.

 

[phattyduck]

Last time I got a smog check the guy didn't mention my supercharger or 7th injector at all, but he did mention the ebay cold air intake =p
Exhaust gas values all measured within acceptable levels so it's all good i guess :nod:

Smog techs are highly variable on what they see and look out for... The local guy I take our stock cars to spends a ton of time checking things out (though he missed the electronics that disable the variable displacement crap on our van...).

Since the new TVS-based blower was introduced, I have been much less interested in a 2UZ or 2JZ swap... Now I just need to find $4k. Errr... $5k.

-Charlie

 

[DJRodriguez88]

When the supercharger was removed, did you lift it by the bypass actuator or get dropped on that side? The actuator can leak pretty bad if it did break. Would be consistent with your codes. Coolant leaks don't normally throw any sort of code so I would be surprised if that fixed it.

No I know better than that, I've had to replace that thing in the past already haha. JB Weld on the broken nipple worked for a year before I broke it off again reaching for bolts. I also sprayed brake cleaner around it and didnt detect any leak there.

 

[gh25_]

I just went back and checked - the specific injectors you linked are factory flow rate. The "upgraded" part about those is that Motorwest has found some coil failures on the original injectors over time and those are supposedly better. They are still two-hold Denso injectors that have otherwise factory fit and performance. It would be the same as getting your stock injectors cleaned and flow balanced, basically.

If you put in higher flow injectors, the ECU will just adjust down how much injection time to match what the engine needs, up to a point - then it will throw a check-engine light and cause lots of other problems...

-Charlie

Ahhh okay that makes much more sense. Haha I miss interpreted what they meant by "upgraded" I thought those were supposed to be upgraded injectors with a higher flow rate for boosted applications like the supercharger. I actually bought & have a set of their remanufactured units already in my truck. I put then in when I was doing knock sensors & other stuff. Thanks for clearing that up for me.

Denso Fuel Injector Replacement Set for 3.4L V6 4Runner Tacoma and Tundra - HP831 (Naturally Aspirated 5VZ-FE only) | MotorWest Performance

These ones. As recommended by Timmy the toolman. So I guess I'm good on the injectors then for now. I also just did my fuel filter a couple days ago I know Magnuson also recommends a replacement on that if you've never done it before, before adding the supercharger on. One step closer! haha.

 

[gh25_]

The 7th injector will be perfect for what you are describing. Just be sure to let them know when you order it that it is for the TVS rotors and not the old rotors. Make a big difference because of airflow rates.

Sweet! Good to know that combo will work out good. I'll be looking forward to adding the supercharger to my truck. Can't wait. Ill be saving away. I've thought about doing a engine swap like a 2UZ, or a 1UZ but that's a lot of work and I'd basically need a donor vehicle for that. That's not mentioning the whole smog referee process for engine swapping to make it legal in California, along with the fabrication, wiring, etc. For roughly the same price & a lot less work I can just get the supercharger and get about the same HP and torque gains. Plus having a supercharger is so cool! Lol now I just have to take account to save another grand for the 7th injector kit haha...
Also have you been on the URD website lately? They have separate 7th kits for the old unit and the new tvs1320 one. I appreciate you letting me know about that though. Thanks!!

 

[gh25_]

Just realized when I added that link for the 3.4l remanufactured Denso injectors that motor west says that the injectors are for NA engines only, not compatible with supercharged setups. Curious to know now what ones they want me to use then. From what I understand they are remade stock units, and the stock injectors are good for use with the supercharger. Confusing lol

 

[gamefreakgc]

Sweet! Good to know that combo will work out good. I'll be looking forward to adding the supercharger to my truck. Can't wait. Ill be saving away. I've thought about doing a engine swap like a 2UZ, or a 1UZ but that's a lot of work and I'd basically need a donor vehicle for that. That's not mentioning the whole smog referee process for engine swapping to make it legal in California, along with the fabrication, wiring, etc. For roughly the same price & a lot less work I can just get the supercharger and get about the same HP and torque gains. Plus having a supercharger is so cool! Lol now I just have to take account to save another grand for the 7th injector kit haha...
Also have you been on the URD website lately? They have separate 7th kits for the old unit and the new tvs1320 one. I appreciate you letting me know about that though. Thanks!!

Oh so they did update it, that's good. Steven the owner has been doing loads of R&D on the new supercharger design and he was saying the new one because it flows 30% more air runs dangerously lean without the extra fuel. Glad they already have a set tailored just for it.