Toyota 5VZ RUSEFI Parallel ECU Settings and Tune Overview | 3rd Gen 4Runner

[@Jursaw]

I appreciate you making these videos and supporting the 5VZFE platform.

[@TurbineResearch]

Thanks so much for supporting the channel! 🙏🙏🙏

[@T4RCLINIC]

I am so thankful for you putting time into making videos like these. Like most older platforms, this information is SO valuable in time and money lost researching and making expensive mistakes without guidance. Thank you!

[@TurbineResearch]

You’re welcome! I’m gad it’s helpful

[@sonicchronic1512]

Yessah appreciate you 🤙💯 glad I could help

[@TurbineResearch]

Thanks 🙏

[@backtriper]

Completely blown away just subscribed and turned on the notification for future videos! Thanks again

[@TurbineResearch]

Thanks for watching!

[@Jursaw]

I learned a lot from this video! Makes me want to try it vs keeping my fuel tech ft450 on my 4runner. I don’t know how to tune and I have this random miss which is making me lose hope with my turbo runner. I also can’t idle it around 750rpm because I don’t have enough outputs to control my stock IAC valve. Would using this parallel help me utilize the stock iac valve?

[@TurbineResearch]

Yes you can use the stock computer to control all the idle and warmup circuit for idle control

[@robertmazza6268]

One thing I don’t understand. So the uaEFI is in parallel with the stock ECU and its driving ignition and fueling. But the stock ECU still sees the factory upstream O2 sensor. So if you’re targeting a richer AFR during closed loop boost (part throttle, but in boost), isn’t the stock ECU going to freak out? Because the upstream O2 sensor is detecting the richer condition, it’s going to try and trim it back to 14.7, but because stock ECU no longer has fuel control, the negative fuel trims will have no affect. Thus the stock ECU will keep trying to trim it lean more and more until it throws a CEL. How does one get around this?

[@TurbineResearch]

In my testing if you have most of the idle and part throttle (normal out of boost parts of the map) targeting stoich or near stoich you won’t get a check engine light. The ecu expects the conditions to be rich under wot so it doesn’t seem to cause too many issues. You just need to tune the parallel ecu to mimic the stock ecu in all areas other than boost. But if you do get a check engine light it doesn’t matter being that the parallel ecu is in full control (other than the lights on the dash being on) hope that helps it’s not a big problem in my experience

[@robertmazza6268]

@@TurbineResearch are you in the Turbo 5vz Facebook group?

[@robertmazza6268]

What info about the cam pulley and cam position sensor would be necessary to get sequential fuel injection instead of batch? I can pop my timing cover off and count teeth, etc. if that’s helpful.

[@TurbineResearch]

I will get around to sequential eventually and show it in a video for sure

[@TheProchargedmopar]

👍💪

[@WillThat]

Would it be possible to run a 2 stage injection on a direct injection engine with the parallel ecu running added port injectors with a setup like this?

[@TurbineResearch]

Yeah you should be able to setup a set of port injectors no problem with a uaefi

[@howardhutchinson]

The Ruse controls the idle or the oem ecu? I believe that the IAC is PWM?

[@TurbineResearch]

Using the rusefi parallel to the stock ecu you can just let the stock ecu run the idle control