This guy turbocharged his 4.7 v8 4runner

derekdevasia

derekdevasia

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Does anyone know who this guy is?

Turbo 4.7 Toyota 4 Runner - YouTube


He has a 06 4runner that's turbocharged and pushing 5 pounds of boost. He has a rear mounted turbo, but that's pretty much all I know. I called STS turbo systems, that specializes in rear mount turbos, but they don't make a kit for the 4runner. They said it would be possible for sure with little modifications. The tech I talked to said that he would only push about 5lbs without an intercooler and 8lbs with a methanol/water injection kit. I'm just curious to exactly how this guy did it, and what parts he used. I tried searching on the forum but this guy apparently isn't on it.
 
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sounds like a good idea if it was a strictly street 4runner, but offroad that turbo underneath would die quick with all the dirt exposure
 
The STS guys have data that proves that the lag isn't as much as you'd expect, but the guys i talked to said the tacoma kit with a bigger turbo might actually swap into our 4runner's, and that gas milage can be expected to improve about 1-2 mpg, just like a supercharger.
 
Lag is all in the setup. Many cars with big lag have that because those little tuner cars only make power at higher rpm's.
I can see the turbo getting abused under the truck if you offroad, but I can think of several ways to make a shield that is open in the back, some good heat shield/blanket material or something to block objects hitting it. It is a closed and sealed unit so dirt shouldn't hurt anything.
I WANT ONE!!! :plane: I would love this with the turbo kicking in as soon as possible to help low end power. I have tons of high end power even with 33's, but more low end grunt would be huge for me.
 
What they have now are oilless turbos as well that have triple ceramic ball bearings, and they spool up quicker as well. Way more expensive however
 
t-man said:
What's it supposed to be? I seen 12 too.
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Theoretical perfect is 14.7, pretty common for cars running turbo's on stock programming to run pig rich like that at full throttle, its the ECU trying not to kill itself as it advances timing. ~12 is a good safe ratio on a turbo car.
 
If I had the money, custom twin turbo setup with small turbos to eliminate lag, and then would have to tune it. Too many people throw on turbo setups and dont take the time to probably tune the engine and end up running rich
 
gm350reratliff said:
Can you say LAG.
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470SNC said:
sounds like a good idea if it was a strictly street 4runner, but offroad that turbo underneath would die quick with all the dirt exposure
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Clownmeat has a rear mount turbo on his 3rd gen that he off roads. Doesn't seem to have any issues with lag or turbo damage.

http://www.toyota-4runner.org/3rd-gen-t4rs/99742-clownmeats-build-thread.html

Not sure why turbo damage would be something to worry about unless you're already tearing up your muffler on the trails. The only thing I don't like about the rear mount is the electric pump required to pump turbo oil back to the engine. If that fails, you might be in some trouble.
 
java said:
Theoretical perfect is 14.7, pretty common for cars running turbo's on stock programming to run pig rich like that at full throttle, its the ECU trying not to kill itself as it advances timing. ~12 is a good safe ratio on a turbo car.
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I used to have a Honda Accord back in the day with a completely custom fabbed turbo setup on it. Used a DSM T25 so it spooled really fast.

My AFR's in full boost were around 12:1. pretty close to stoic at no boost for good gas mileage.

With a good tune, you can run small boost on most motors without detrimental effects. Mine was boosted for almost 70k miles and a few years daily driven @ 10 psi (spiked to 12-14 on cold days). boosted it at around 130k miles then pulled it off just shy of 200k miles. I was running completely stock internals. Had an f22b2 single cam non-vtec for all you former honda fanatics. I had an upgraded fuel system and a proper tune though. Ran a walbro 255lph fuel pump, DSM 450CC injectors, AEM FPR, PLX wideband setup to monitor AFR's, and an eprom chipped ECU running uberdata EMS. It was dyno and street tuned by a well renowned local tuner here in Atlanta. Averaged 25mpg if I stayed out of boost.

When I pulled the turbo setup off and went back to NA, I ran a compression test and it was still ~160psi in all 4 cylinders. Drove that car NA for about another year or so and sold it with 211k miles (to buy a tacoma). The motor still ran perfect and EVERYTHING worked.
 
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I'd like to know what engine management is being used on that turbo setup, because you're not running forced induction without modified fuel and timing tables. I'm not aware of any aftermarket companies like SCT, HP Tuners, or others who write tuning software for our trucks. Anybody know?
 
fullboogie said:
I'd like to know what engine management is being used on that turbo setup, because you're not running forced induction without modified fuel and timing tables. I'm not aware of any aftermarket companies like SCT, HP Tuners, or others who write tuning software for our trucks. Anybody know?
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To my knowledge, there isn't an "HP Tuners" type option where you can re-flash the ECM since the Toyota ECMs are locked. Only real option is piggy back stuff like AEM FIC.
 
Robb235 said:
To my knowledge, there isn't an "HP Tuners" type option where you can re-flash the ECM since the Toyota ECMs are locked. Only real option is piggy back stuff like AEM FIC.
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Yeah, but who is tuning this stuff? Someone's got to be providing baseline fuel enrichment and timing retard data for the first time user. Are there no Toyota performance shops around?
 
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