Shut Turbo down?

[Adamv7010]

Earlier in the week I stopped at a small local car lot and looked at an 05 ccsb fx4 lariat ...had 200k miles with stacks....tons of switches and gague...

Not looking to buy ...just looking.. anyway...it was clear the truck had been worked on by different ppl...

I asked the guy if he knew what any of the switches did...he said they took the trick to a local diesel shop which I know and trust, to look it over before they put it on the lot and to get an egr delete. He said the diesel guy told him one switch was to shut the Turbo down...anyone heard of this?

He said some guys like the sound of the stacks at idle witg no Turbo...

I figured he was talking about a lope switch or something...

One was a smoke switch...and I must say those 8" stacks were pretty idling w the smoke switch...

Anyway...anyone heard of shutting a Turbo down at idle?

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[jerg_064]

That means opening the vanes so it doesn't spin up the turbo as much and sounds a lot more like a V8 rumble....It is the smoke switch, just takes RPMs to produce the smoke.

[PolishPstroker]

I think he means it's a switch that points the vanes in the turbo to the position where you really don't hear the turbo, mostly engine noise and 6.0's do sound awesome idling deep like that. From the factory the the computer is programmed to cycle the vanes at idle to prevent them from sticking. 6.0's have variable vanes in the exhaust housing which controls how it spools, changing with load and rpm. Therefor you can have the quick spool of a small turbo and hold a lot of boost like a big turbo.

[PGreenSVT]

Originally Posted by PolishPstroker

I think he means it's a switch that points the vanes in the turbo to the position where you really don't hear the turbo, mostly engine noise and 6.0's do sound awesome idling deep like that. From the factory the the computer is programmed to cycle the vanes at idle to prevent them from sticking. 6.0's have variable vanes in the exhaust housing which controls how it spools, changing with load and rpm. Therefor you can have the quick spool of a small turbo and hold a lot of boost like a big turbo.

Actually no, the vane sweep was introduced with the VXCF9 strategy in 2010.

[dowmace]

Originally Posted by PGreenSVT

Actually no, the vane sweep was introduced with the VXCF9 strategy in 2010.

My 06 changes vane position every so many seconds when idling or i assume thats why the exhaust tone changes do drastically.

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[steed281]

Originally Posted by dowmace

My 06 changes vane position every so many seconds when idling or i assume thats why the exhaust tone changes do drastically.

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My 04 does this as well.

[Adamv7010]

I was wondering why my 06 changes tones at Idle. This explains it

[atvrider93]

Originally Posted by dowmace

My 06 changes vane position every so many seconds when idling or i assume thats why the exhaust tone changes do drastically.

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Originally Posted by steed281

My 04 does this as well.

Have y'alls trucks been reflashed?