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cubanp

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1

Wednesday, July 23rd 2014, 11:34am

low on acceleration

Good day. I'm from CT and relocated to JHB and my fortuner is sluggish on the acceleration. Please assist. Thank you.

GROBBIES

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Wednesday, July 23rd 2014, 11:40am

Morning Cubanp

Please elaborate on this, there will be someone to assist you or point you in the right direction.

Have you taken it to a dealer and let them put it on a Tech 2 and give you a diagnostic (problem finder)

Grobbies
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Wednesday, July 23rd 2014, 11:56am

At the high altitude on the Reef all vehicles are more sluggish than at the coast.
The biggest difference being between Durban and JHB.

It is something you have to accept or fit a Race Chip.
Nothing is forever..... good or bad.

Alvin

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Wednesday, July 23rd 2014, 12:38pm

I agree on the change of altitude cos my FT pulls much stronger on the coast than up here.

FoX

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Wednesday, July 23rd 2014, 1:30pm

Exhaust and chip will sort it out

FoX

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Wednesday, July 23rd 2014, 1:31pm

Please register on the forum and join in on our discussions!

Tal

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Wednesday, July 23rd 2014, 1:35pm

Ya, i am not convinced! Turbo vehicle should not have that much of a difference when driving at altitude! Ill maybe do tech2 at dealer first
:beer: WHY???? BECAUSE I CAN!!!! :beer:

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Wednesday, July 23rd 2014, 1:39pm

Tal
Have you been to Durban in your FT?

There is realy a huge difference in power. That is why I wanted the chip so badly, because I could feel a huge reduction in power in Kimberley.
Nothing is forever..... good or bad.

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Wednesday, July 23rd 2014, 1:39pm

IT SOUND THAT IT IS A HUGE DIFFERENCE IN POWER AND THAT IS NOT CORRECT :hmm:
WIE PROBEER EN MISKIEN MISLUK IS BETER AS IEMAND WAT GLAD NIE PROBEER EN ALTYD MISLUK

:popcorn:

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Wednesday, July 23rd 2014, 1:45pm

Altitude problem...its normal

vanaf die koordloos
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cubanp

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Wednesday, July 23rd 2014, 3:36pm

Thanx, I had it at Melrose Toyota and they said that there are no warning/engine warning lights that indicate any problem.

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Wednesday, July 23rd 2014, 4:37pm

This is an interesting thread which I decided to look up some info on and the best explanation I came up with is as follows -

Turbos don't "adapt" to environment... They are hunks of spinning metal, and they work the same way no matter where they are.

The reason turbo cars work more efficiently than NA cars is because they have the ability to pressurize (and condense) some of the intake air. Every turbo has a flow map, specifying just how much air flow they can output, based on RPM and pressure ratio. Along with that, every turbo has an "efficiency island" where the turbo can operate at its peak ability, which is also based on RPM and pressure ratio.

At sea level, atmospheric pressure is highest because of the weight of the air above, it's the same concept as water... the lower you go, the higher the pressure. This helps a turbo engine, because all a turbo does is pump air into an engine, say 1 bar, which is about 15psi. At sea level, the atmospheric pressure is already 1 bar, so a turbo has an easy time of exceeding that pressure.

At higher altitudes, pressure falls below 1 bar, and a turbo has to overcome the loss of pressure AND still be able to stay in its efficiency range. NA cars just don't have an ability to do this, they are stuck with the loss of pressure, and thus, air that can be moved through an engine, resulting in a loss of power.

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13

Wednesday, July 23rd 2014, 4:46pm

And therefor the loss off power at high altitude.

Well written. This is a major factor in flying instruction as even Helicopters and Planes will have less power the higher they go.
Nothing is forever..... good or bad.

Tal

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Wednesday, July 23rd 2014, 6:38pm

Agree to some extend! Yes the air is more condensed, but the difference in psi is very little! Had a boost meter on my polo and difference was less than 0.1 bar between highveld and coast! Ill do some research!
I know there is more oxygen at the coast
:beer: WHY???? BECAUSE I CAN!!!! :beer:

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Wednesday, July 23rd 2014, 8:44pm

This applies to cars without turbos also.

vanaf die koordloos
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Tal

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Wednesday, July 23rd 2014, 9:58pm

Quoted

This applies to cars without turbos also.

vanaf die koordloos

The affect on a non turbo car will be greater
:beer: WHY???? BECAUSE I CAN!!!! :beer:

FoX

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17

Wednesday, July 23rd 2014, 10:18pm

Ek stem met die slim manne

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Thursday, July 24th 2014, 7:20am

Petrol or Diesel?
AmadaXtreme Suspensions
Diamond Park nr2, 86 Jakaranda Str, Hennopspark, Centurion
S25°51'50.2 E28°09'58.2

Cobus 071 641 7947 cobus@amadaxtreme.co.za

cubanp

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Thursday, July 24th 2014, 8:15am

low on power

Morning. Thank you Alvin for that detailed explanation.

HERRIE

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20

Thursday, July 24th 2014, 8:24am

I beg to differ...practically my Tuna likes Pta and surrounds;to ME it feels like "it has been tuned to live here" and just feels more responsive here
I would advise to take your car to a dealer or someone who can just make sure it is "tuned" properly
And chip it....it transforms it into an enjoyable vehicle!!!!!!!! :phat:

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