Turbo Gauge - how to read properly?

[Alaska Guy]

I have a 2025 non-Hybrid TRD OFF Road premium. Within the instrument cluster there is a Turbo gage. This is my first Turbo Charge vehicle. I don't know how to read or interpret what information it relates to me. Any explanation would be very appreciated.

Also, I have been watching some YouTube videos that recommend to cool down the Turbo of a minute or two before shutting down the engine. Is this cool down period necessary on the Toyota Turbo?

AlaskaGuy

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[127.0.0.1]

the gauge is just eye candy, it does tell you what turbo pressure is up to,
but it's not like you have much control other than the accelerator pedal

for shutdown, if you are driving slow around surface streets, not using the turbo,
just park it and shut it off. If you are hammering hard on highway and pull over for
a break at a gas'n'sip, here is where you should let it idle for a minute
before shutdown to let it cool down a bit and circulate oil.

 

[Dr_Al]

I haven't has a chance to sit in a 6th get 4Runner yet (trying to avoid it because I want to wait until after winter is over (one less salt season) but on my Celica that had a turbo the gauge just registers boost. Just revving the engine doesn't create boost. Taking off from a stop sign with some aggression will. The harder the engine has to work the more boost the turbo will provide as the engine RPMs increase.

As for cool down. All I ever did was just drive easy for the last couple minutes before turning off the engine. I never let it idle. The idea is to cool the turbo down so any oil that's in it doesn't burn from the excessive heat. Modern oils are designed much better now that turbos are common. If you are towing a trailer and working the engine hard then letting it idle (and even starting up the engine after a few minutes to get cooler oil into the turbo) would be a good idea.

 

[Alaska Guy]

Here is what a Toyota engineer says about the 6 gen turbo.

 

[Nodak]

lol he is not a toyota engineer in the sense that you think of an engineer (maybe gmc though). him and tundra dude i have them on ignore on youtube along with scotty.

nothing against his YT channel personally, but him, tundradude and scotty, the voice just pings my ears to the point i cant stand to listen to them.

they are probably great people but meh from my perspective.

 

[Nodak]

oh and the the boost gauge, its think it maxes at 32 psi but normally goes 18-19 psi in day to day normal driving

toyota doesnt post specs for the turbo

its more like 7-10 psi @ stock (better google-fu got some better stats)

some have been able to get up to 15 psi on the 2.4L turbo with aftermarket tuning

 

[Alaska Guy]

lol he is not a toyota engineer in the sense that you think of an engineer (maybe gmc though). him and tundra dude i have them on ignore on youtube along with scotty.

nothing against his YT channel personally, but him, tundradude and scotty, the voice just pings my ears to the point i cant stand to listen to them.

they are probably great people but meh from my perspective.

Ok, thanks for your input. There is really no need to laugh at someone ignorance.

 

[Nodak]

Ok, thanks for your input. There is really no need to laugh at someone ignorance.

it wasnt a /sarcastic reply, its just he uses the engineer shtick to make him look better. he is an engineer, but for toyota he wasnt a engineer in the sense that we think when you say that word with an automotive manufacturer.

goto his about page on automotive press and he talks about all the different engineer jobs he did, but the only true engineer job as we relate was only with GM. the rest from what i can tell are not directly related to engines or manufacturing per se.

different processes he was apart of, but now i digress so i will stop.

i mean his video's are great but i had to stop watching him after about a year, just something in me changed where i couldn't stand listening to him.

same for scotty, i watched him for a while and meh, couldnt anymore.

 

[sstarrx2]

I have a 2025 non-Hybrid TRD OFF Road premium. Within the instrument cluster there is a Turbo gage. This is my first Turbo Charge vehicle. I don't know how to read or interpret what information it relates to me. Any explanation would be very appreciated.

Also, I have been watching some YouTube videos that recommend to cool down the Turbo of a minute or two before shutting down the engine. Is this cool down period necessary on the Toyota Turbo?

AlaskaGuy

Yeah...you don't need to.

 

[Nodak]

just dont drive off the autobahn's in AK dirt roads and park it immediately. continuous high speed or heavy loads and not have a short cool down

like getting off the highway and finding a gas station works since you have to slow down and drive to a gas station at slower pace so the engine and components have time to cool down before you stop.

outside of that you really dont need to worry about cool downs. i mean i drive 75/55 then thru town and as i get closer to home the speed limit drops down to 35 and my 1 way subdivision is 15 mph so my HV vehicle the engine is usually off the last 500-1000 ft to the garage door.

 

[Jakethewhippet1]

Is there a way to read actual turbo pressure from OBD2 port. I would agree in Normal mode it feels like about 15 psi but I could be wrong.

 

[Nodak]

boost is max around 10 psi if i remember correctly. someone correct me if i am wrong.

10 psi boost for normal day to day driving

~15 psi under heavy load/max acceleration

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