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  #41  
Old 22-05-2019, 07:32 PM
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I should do a test run with TPS totally disconnected . As that Td42t tuner mentioned
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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  #42  
Old 22-05-2019, 07:40 PM
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Quote:
Originally Posted by jwmr View Post
Remember the upgraded fuel pump with electronic advance trim, ecu and intercooler were all added for emissions controls
Its possible that its used to retard at certain throttle settings?
I know if the advance solonoid isnt working, they rattle badly under decelleration
Its the only td42 with a tps or that pump
Sounds like TD42t is the way to go. Should stay away from td42ti
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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  #43  
Old 23-05-2019, 07:14 AM
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Quote:
Originally Posted by Dark side View Post
What was you fuel economy?
Hey Darkside

Its in my signature

Im sure its going to be better.

Moves with sooo much lower revs


I recall reading somewhere on here

Diesel Tuner said AFR doesnt really change the fuel economy but provides power on boost

He said timing is the key for drivability and fuel consumption
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km

Last edited by drgtr; 23-05-2019 at 11:09 AM.
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  #44  
Old 23-05-2019, 10:01 AM
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Quote:
Originally Posted by drgtr View Post
Hey Darkside



Its in my signature



Im sure its going to be better.



Moves with sooo much lower revs





I recall reading somewhere on here



Diesel Tuner said AFR doesnt really change the fuel economy but provides power on boost



He said timing is the key for drivability


Thanks . What pump are you using ?
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  #45  
Old 23-05-2019, 11:08 AM
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Just the factory 11mm Boost compensated pump
which is apparently good for up to 23 to 24 psi with the Mamba Bolt on 18G turbo
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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  #46  
Old 23-05-2019, 11:44 AM
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Quote:
Originally Posted by drgtr View Post
Just the factory 11mm Boost compensated pump
which is apparently good for up to 23 to 24 psi with the Mamba Bolt on 18G turbo


Ok thanks. I would like to know if what your doing can be done on a diesel central 12 mm pump ? The reason I ask is my fuel economy Is not the best but Iam at around 185 kw . So maybe itís the price you pay for power . Thanks
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  #47  
Old 23-05-2019, 12:49 PM
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How many Litres per hundred are you getting?

If you can advance your timing so its way more responsive.
Thats where it will make a difference because you will be driving around town virtually offboost alot and lower revs
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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  #48  
Old 23-05-2019, 01:04 PM
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Quote:
Originally Posted by Dark side View Post
Ok thanks. I would like to know if what your doing can be done on a diesel central 12 mm pump ? The reason I ask is my fuel economy Is not the best but Iam at around 185 kw . So maybe itís the price you pay for power . Thanks
I didnt think anyone did a 12mm/performance conversion on a Ti pump.
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  #49  
Old 23-05-2019, 02:58 PM
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Thanks . Thinks itís just a
Given with power comes fuel ⛽️ usage. I couldnít go back now
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  #50  
Old 23-05-2019, 03:00 PM
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Quote:
Originally Posted by Dark side View Post
Thanks . Thinks itís just a
Given with power comes fuel ⛽️ usage. I couldnít go back now
Hey Dark side but should only be the case when on boost and power

Off boost cruising should be good on fuel.

Definitely check timing and tune if you can.
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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  #51  
Old 23-05-2019, 04:38 PM
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Quote:
Originally Posted by drgtr View Post
Hey Dark side but should only be the case when on boost and power



Off boost cruising should be good on fuel.



Definitely check timing and tune if you can.


Itís probably ok . As I donít drive like a nanny . Very hard to find a good tuner . They all tune differently . Plus I want a y62 one day so might as well get use to it even though a y62 would be better on fuel .
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  #52  
Old 23-05-2019, 05:03 PM
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Quote:
Originally Posted by Dark side View Post
Itís probably ok . As I donít drive like a nanny . Very hard to find a good tuner . They all tune differently . Plus I want a y62 one day so might as well get use to it even though a y62 would be better on fuel .
I owned this car a year now.
This is virtually my first Turbo diesel car
It was stock when I got it.

Everyone always said Turbo Diesel has way more low end than Petrol 4wd
I was less than impressed when I first got it.

Now after fixing this . Wow. from 1400rpm it spins the 35 inch tyres like they arent even there.

I remember on the prado 120v6. As powerful as it was . I just went to light truck style tyres but same size you could feel the weight.
this is definitely better!

I agree with you. Definitely a y62 as the next vehicle.


Are you running larger tyres?
See if you can get someone to check your pump timing aswell

Everyone says the 12mm pump is actually much better on fuel
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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  #53  
Old 23-05-2019, 06:02 PM
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Running 33 inch tyres. Iam pretty sure more fuel economy is about the same as others that have a similar set up . I just wish it was less . 12 mm pump slams fuel in not sure if it should use less .
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  #54  
Old 23-05-2019, 06:07 PM
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Quote:
Originally Posted by Dark side View Post
Running 33 inch tyres. Iam pretty sure more fuel economy is about the same as others that have a similar set up . I just wish it was less . 12 mm pump slams fuel in not sure if it should use less .
Whats your calculations litres/100kms?

Also you take in the calculations for larger tyres too?

Other option is to run a 11mm compensated pump.
Im sure someone will be happy to swap with you and cash your way.


I been doing research on the y62 v8 patrol and around town its 16.5 to 20 litres per hundred.
I can only imagine once you start modding.

My Prado 120 started around 14.4 litres per hundred around town stock, 11.8litres highway to 17.9 litres around town with bullbar,2inch lift and rack, 13.4 highway.

You are lucky to have a 12mm pump. Alot of Td42t owners dream of it
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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  #55  
Old 23-05-2019, 06:25 PM
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Quote:
Originally Posted by drgtr View Post
Whats your calculations litres/100kms?



Also you take in the calculations for larger tyres too?



Other option is to run a 11mm compensated pump.

Im sure someone will be happy to swap with you and cash your way.





I been doing research on the y62 v8 patrol and around town its 16.5 to 20 litres per hundred.

I can only imagine once you start modding.



My Prado 120 started around 14.4 litres per hundred around town stock, 11.8litres highway to 17.9 litres around town with bullbar,2inch lift and rack, 13.4 highway.



You are lucky to have a 12mm pump. Alot of Td42t owners dream of it


All the mods cost me a fortune and in only has 170000 klms on the clock - donít want to go backwards but one day my see if I can get a tune that doesnít use as much fuel but hey I tow my camper and sit on the speed limit most places .
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  #56  
Old 23-05-2019, 06:29 PM
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Quote:
Originally Posted by drgtr View Post
Whats your calculations litres/100kms?



Also you take in the calculations for larger tyres too?



Other option is to run a 11mm compensated pump.

Im sure someone will be happy to swap with you and cash your way.





I been doing research on the y62 v8 patrol and around town its 16.5 to 20 litres per hundred.

I can only imagine once you start modding.



My Prado 120 started around 14.4 litres per hundred around town stock, 11.8litres highway to 17.9 litres around town with bullbar,2inch lift and rack, 13.4 highway.



You are lucky to have a 12mm pump. Alot of Td42t owners dream of it


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  #57  
Old 23-05-2019, 06:40 PM
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Quote:
Originally Posted by drgtr View Post
Whats your calculations litres/100kms?



Also you take in the calculations for larger tyres too?



Other option is to run a 11mm compensated pump.

Im sure someone will be happy to swap with you and cash your way.





I been doing research on the y62 v8 patrol and around town its 16.5 to 20 litres per hundred.

I can only imagine once you start modding.



My Prado 120 started around 14.4 litres per hundred around town stock, 11.8litres highway to 17.9 litres around town with bullbar,2inch lift and rack, 13.4 highway.



You are lucky to have a 12mm pump. Alot of Td42t owners dream of it


My fuel economy would be similar to that of the y62 you quoted. Maybe 16 to 18 ltrs
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  #58  
Old 23-05-2019, 07:05 PM
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lol I love that comment. "more gutless than a facebook bully"

Im sure there has to be a good tuner.

i was let down by two tuners too

Second one boasted how good he was and how he tuned td42t all day everyday.

To compensate for that retarded timing hesitation looks like he wounded the main fuel screw more.
Instead of actually fault finding.

Either way Enjoy your beautiful vehicle.
We are lucky to have the TD42T.

An Era of simplicity and over engineered.
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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  #59  
Old 29-05-2019, 08:08 AM
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Any feedback on your fuel economy as yet?
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  #60  
Old 29-05-2019, 08:15 AM
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Morning

Only filled up tank this weekend.

Ill see how I go. Ill do a top up on the weekend hopefully and calculate.

Would be good test because it will be worse case scenario.
I do only 7.2kms a day to work and back so short stop start drives
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2003 Td42Ti Gold Manual Wagon
3 inch Exhaust
Larger Top Mount Intercooler
Mamba 18G 6cm
Dyno Tuned to 23psi
315 75 16 Kumho Mt51
Highway 13.3L/100km
Suburb 14.6-15.6L/100km
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