Boost pressure values on Yaris 1.4L D4D 90 - Toyota Yaris Forums

rasyaya · 08-31-2014, 06:11 AM

Hi everybody,

I have a 2009 Yaris with the 1NDTV turbo diesel engine (1.4L D4D 90hp).
I would like to have some information about boost pressure standard values.
A boost pressure vs rpm curve would be great, but even an info about the standard maximum boost pressure would be helpful.

P.S : the engine has a Variable Geometry Turbocharger, so no wastegate.

Thanks for your help

rasyaya · 09-29-2014, 08:48 AM

Bump

why? · 09-29-2014, 10:06 AM

Not sure anyone knows. PM CTScott, he might have an idea, or maybe an idea where you could acquire that info.

CTScott · 09-29-2014, 10:47 AM

I have never seen a chart, but according to the service manual the max boost at 5100-5250 RPM should be 2.2 to 6.5 psi.

rasyaya · 10-04-2014, 06:51 PM

Thanks CTScott

So that is a maximum boost up to 6.5 PSI above atmospheric pressure I suppose.
I have the service manual for the petrol Yaris 2. Where can I found/download the diesel service manual?

CTScott · 10-04-2014, 07:27 PM

Quote:

Originally Posted by rasyaya

Thanks CTScott

So that is a maximum boost up to 6.5 PSI above atmospheric pressure I suppose.
I have the service manual for the petrol Yaris 2. Where can I found/download the diesel service manual?

Correct. I will send you what I have for the diesel.

rasyaya · 10-05-2014, 05:54 AM

Thank you very much for the link CTScott.

DieselJuan · 12-21-2014, 06:49 AM

I also enjoy a diese 90 bhp. I am planning some mods to achieve better cooling and performance but I only have the petrol manual. Can you send me the diesel one, please?

Giupo · 03-25-2015, 07:43 AM

1NDTV from 2009 boost peak 0.85bar and costant boost 0.7bar, to increase the boost you have to remap the ECU.
I remapped the Ecu and now I have boost peak 1.1bar and costant boost 0.9bar for 110hp ;)

Ludo · 05-03-2015, 07:21 AM

I have to kind of agree with Giupo, i can't remember stock boost on my 06 D4D.

But after i mounted a power box on the common rail sensor boost where about 0,9-1,1 bar.
For some time I had a power box on the MAP sensor, boost where 1,4-1,5 bar (peak boost 2 bar++) stock sensor is "blind" over 2 bar. Stock ECU reduces diesel pressure if boost is 1,5 bar.

I think stock turbo is good for about 140-150 hp max. I've mounted a bigger VNT turbo, bigger ic, portet top and bigger trottle valve, and aiming for 180 hp.

oshimada · 01-16-2022, 02:21 PM

Quote:

Originally Posted by CTScott

Correct. I will send you what I have for the diesel.

hello CTScott can you send me those too?

08-31-2014, 06:11 AM	#1
rasyaya Drives: Yaris 2 Join Date: Jul 2014 Location: France Posts: 11	Boost pressure values on Yaris 1.4L D4D 90 Hi everybody, I have a 2009 Yaris with the 1NDTV turbo diesel engine (1.4L D4D 90hp). I would like to have some information about boost pressure standard values. A boost pressure vs rpm curve would be great, but even an info about the standard maximum boost pressure would be helpful. P.S : the engine has a Variable Geometry Turbocharger, so no wastegate. Thanks for your help

09-29-2014, 08:48 AM	#2
rasyaya Drives: Yaris 2 Join Date: Jul 2014 Location: France Posts: 11	no one can help? Bump

09-29-2014, 10:06 AM	#3
why? Only Happy When it Rains View User's Garage Drives: Yaris LB Join Date: Jan 2006 Location: harnett county NC Posts: 4,097	Not sure anyone knows. PM CTScott, he might have an idea, or maybe an idea where you could acquire that info. __________________ Colin Chapman disciple

09-29-2014, 10:47 AM	#4
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	I have never seen a chart, but according to the service manual the max boost at 5100-5250 RPM should be 2.2 to 6.5 psi. __________________

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10-04-2014, 06:51 PM	#5
rasyaya Drives: Yaris 2 Join Date: Jul 2014 Location: France Posts: 11	Thanks CTScott So that is a maximum boost up to 6.5 PSI above atmospheric pressure I suppose. I have the service manual for the petrol Yaris 2. Where can I found/download the diesel service manual?

10-05-2014, 05:54 AM	#7
rasyaya Drives: Yaris 2 Join Date: Jul 2014 Location: France Posts: 11	Thank you very much for the link CTScott.

12-21-2014, 06:49 AM	#8
DieselJuan I've made a post! Drives: 1.4 D 90 BHP MT6 Join Date: Dec 2014 Location: Spain Posts: 1	I also enjoy a diese 90 bhp. I am planning some mods to achieve better cooling and performance but I only have the petrol manual. Can you send me the diesel one, please?

03-25-2015, 07:43 AM	#9
Giupo Drives: Yaris Join Date: Apr 2009 Location: Italy Posts: 77	1NDTV from 2009 boost peak 0.85bar and costant boost 0.7bar, to increase the boost you have to remap the ECU. I remapped the Ecu and now I have boost peak 1.1bar and costant boost 0.9bar for 110hp ;)

05-03-2015, 07:21 AM	#10
Ludo Drives: 2006 Hatch 1.4 D4-D Join Date: Jul 2013 Location: Norway Posts: 2	I have to kind of agree with Giupo, i can't remember stock boost on my 06 D4D. But after i mounted a power box on the common rail sensor boost where about 0,9-1,1 bar. For some time I had a power box on the MAP sensor, boost where 1,4-1,5 bar (peak boost 2 bar++) stock sensor is "blind" over 2 bar. Stock ECU reduces diesel pressure if boost is 1,5 bar. I think stock turbo is good for about 140-150 hp max. I've mounted a bigger VNT turbo, bigger ic, portet top and bigger trottle valve, and aiming for 180 hp.

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