Boost

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Boost

Postby Tuflux1kd on Fri, 06 Jun 2014 3:14 +0000

Hey guys,

I recently had a reconditioned turbo out in my car as when I bought the lux the turbo was destroyed. Then that turbo blow aswell! Turns out it was a busted bearing, every one is saying it's because it was a dodgy reco, but I'd still like to make sure I'm doing everything I can to try and stop this happening to my BRAND NEW genuine toyota turbo witch I paid $3500 for.

Does anyone know how much boost the 06 3.0ltr d4d's run?

Cheers, Mitch.
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Re: Boost

Postby boxhead55 on Fri, 06 Jun 2014 4:11 +0000

160 kpa
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Re: Boost

Postby Tuflux1kd on Sat, 07 Jun 2014 5:42 +0000

Thanks boxhead, do you know how boost is adjusted with these variable vein turbos?
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Re: Boost

Postby boxhead55 on Sat, 07 Jun 2014 6:35 +0000

Yep like this
Image

The stepper motor is controls by the boost ecu to move the vans open and closed to direct the exhaust onto and away from the compressor wheel
This is why you get good boost so low in the rev range. And do not require a waist gate.
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Re: Boost

Postby mattwhite on Sat, 07 Jun 2014 7:04 +0000

I'd be checking the oil supply to the turbo. A blocked pipe? Wouldn't over boost set a fault?
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Re: Boost

Postby rysermon on Sun, 08 Jun 2014 11:18 +0000

boxhead55 wrote:160 kpa


wait so a d4d hilux runs 23 psi :S? mine only boosts to 12 :\ according to my scan gauge
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Boost

Postby boxhead55 on Sun, 08 Jun 2014 2:01 +0000

160kpa amphoteric reading

Not actual.

This is what you will see on most scan gauges and tech stream

10 to 12 psi is the target.(actual)
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Re: Boost

Postby Tuflux1kd on Sun, 22 Jun 2014 8:17 +0000

I have a mechanical boost gauge and it shows 22-23psi at it's peak, relating to this topic, does anyone know why at around 2000rpm @ 10psi and consistent throttle position the boost will go from 10 to 8 then back to 10? Just keeps fluctuating around the 2k rev mark

Cheers
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Re: Boost

Postby boxhead55 on Sun, 22 Jun 2014 4:21 +0000

Egr position opening and closing.
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Re: Boost

Postby mattwhite on Sun, 22 Jun 2014 4:57 +0000

Oh wow. That's a massive amount of egr.
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Re: Boost

Postby boxhead55 on Sun, 22 Jun 2014 5:11 +0000

If your egr is blocked or dirty the intake throttle plate will close a little or a lot depending in requirements and boost will increase via shutting the variable vans some

This allows for correct flow of egr which is measures via the map and maf sensors.
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Re: Boost

Postby Tuflux1kd on Mon, 23 Jun 2014 12:23 +0000

So people who say blocking the egr increases performance are clueless?
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Re: Boost

Postby bigute on Wed, 02 Jul 2014 4:54 +0000

Tuflux1kd wrote:So people who say blocking the egr increases performance are clueless?


umm , I'm gonna upset a few on here by saying this , but yes .
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Re: Boost

Postby dino12 on Wed, 24 Sep 2014 3:37 +0000

boxhead55 wrote:Egr position opening and closing.


I have a steady pulse in my exhaust if I listen at the tail pipe, and a loud pulse on the exhaust side of the engine around the manifold/turbo area. is this caused by this egr thing or do I have a problem elsewhere. it is loud enough that I hear it in the cab when driving. I also sometimes have a loud knock at idle on cold start-up.
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Re: Boost

Postby Andrew.Fenwick on Wed, 24 Sep 2014 7:38 +0000

Whats the easiest way to find out what boost level your ute is running at?
Guessing its either fitting a boost gauge or using a Scantool/Scangauge and a smart phone yeah?
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Re: Boost

Postby NielsC on Wed, 24 Sep 2014 11:28 +0000

You should check the oil supply for the turbo. The pipe is easily removed from the turbo.
Remove it and check if it isn't clogged up. Also check the oil pick up in the sump. You can see this when you drain the oil and look in the hole.
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Re: Boost

Postby Rocket55 on Thu, 25 Sep 2014 5:12 +0000

Hunting that you can hear in the exhaust (sounds like cam roll, that's what I wish it is ;) ) can sometimes be an indicator to an injector pump that's seen better days.
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Re: Boost

Postby wttmf on Fri, 30 Jul 2021 5:31 +0000

hey guys, I just put in scangaige2 and max boost I'm getting is around 8.8psi, seems a bit low?
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Re: Boost

Postby Gipsy on Fri, 30 Jul 2021 6:26 +0000

Do you have a chip or tuned ECU? They alter boost readings to fool the ecu into demanding more boost.
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Re: Boost

Postby wttmf on Fri, 30 Jul 2021 2:53 +0000

Gipsy wrote:Do you have a chip or tuned ECU? They alter boost readings to fool the ecu into demanding more boost.


na, no chip or ecu work, 3" exhaust is only mod.
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