Toyota Motorsport - Diesel Performace Kit

[rodw Lurker Find all posts View Profile Close rodw]

Re: Toyota Motorsport - Diesel Performace Kit

Well, here are the Dyno scans for you guys.
This is a comparison of the torque and power settings between the standard Hilux settings and the minimum Chip settings:



Green is the Standard Hilux, no exhaust.
And here is the comparison between the minimum and maximum settings on the chip:



I was surprised how little difference there is between the minimum and maximum settings shown in the second graph because you really feel the extra zip in the top power setting when you put the slipper in. I suspect this is because the dyno test was done over progressive acceleration and ignores the time element and you don't see the difference GHG and I felt on the top setting. I think it must stab the rat faster when you put your foot down on the higher power settings. Now I have seen this, I hvae set the chip to the minimum setting and will leave it that way for a tank of fuel and see how it goes.

I filled up this morning and noticed a slight improvement in fuel economy which was really surprising given I have been playing with the chip for the last week.

I asked the guy about exhausts and he thought this would be a good idea at this level of boost to let the heat escape more quickly. Typically, he said an exhaust adds about 7% to performance.

I'll let you guys work out the percentage increases as I am out of time, but remember this is on 32" MT tyres (265/75 R16). The building was nearly shaking from the howl of the Crushers standing beside the car. I had no idea they were so loud outside the car..

[Davros Advanced Member Find all posts View Profile Close Davros]

Re: Toyota Motorsport - Diesel Performace Kit

Wow! They are impressive figures.
I wonder if there would be an adverse effect on turbo life, with stock exhaust and all the heat buildup with that extra power.

[rodw Lurker Find all posts View Profile Close rodw]

Re: Toyota Motorsport - Diesel Performace Kit

Wow! They are impressive figures.
I wonder if there would be an adverse effect on turbo life, with stock exhaust and all the heat buildup with that extra power.

I can't answer that but I reckon an exhaust upgrade would help keep things cooler.

I realised after I posted this that the lower curve is power (N) not Torque (Nm). I have phoned them to see if I can get a reprint of the charts with the right parameter graphed.

[scottmary Lurker Find all posts View Profile Close scottmary]

Re: Toyota Motorsport - Diesel Performace Kit

Dont forget to factor in the stamp duty and the import duties when you order from over seas.
Little Kev needs that money to start paying back the 50 Billion he blew

[rodw Lurker Find all posts View Profile Close rodw]

Re: Toyota Motorsport - Diesel Performace Kit

Dont forget to factor in the stamp duty and the import duties when you order from over seas.
Little Kev needs that money to start paying back the 50 Billion he blew

Thanks mate. I allowance for that. I ordered six of these units last night and have spent a bit of time today working through the customs clearance and duties issues. It is not so much paying the duties and GST, it is sorting out all of the paperwork and how to lodge it that is the nightmare. Trying to work out which import code to use against the 5,000 odd that Customs use has been a bit of a nightmare. Hopefully, it will all sort itself out before Christmas.

[jogal Lurker Find all posts View Profile Close jogal]

Re: Toyota Motorsport - Diesel Performace Kit

Hey Guy's,
As someone asked earlier in regards to adding a mod like this to their insurance policy, I recently fitted a Steinbaur unit to my new Hilux and after spending half a day on the phone to insurance company's the only mob that would list it and really looked after me on price was AAMI. 8)

[Jorgen45 Lurker Find all posts View Profile Close Jorgen45]

Re: Toyota Motorsport - Diesel Performace Kit

Hi Folks,

I have read a lot of good things about the "TTE Performance kit" on the Forum.

However my experiences does not match that, in fact I only feel a slightly better performance in the 60 to 100mph range, but one good point it
does not seem to change the fuel consumption much if any at all.

My aim was to get more power in the low revs to overcome the vehicles poor power characteristic in a Desert conditions as when you try to pull out
of deep dry sand where it is absolutely essential that the wheels do not spin.

You get enough power at 1800 revs, but that is no good for the clutch and only of use if your aim is to dig the vehicle deep into the sand.

I had the Performance Kit fitted to my 2003 D4D KDJ120 by an experienced German 4x4 Toyota dealer, but the results were poor, so an expert from
TTE was called in.

The expert spend several hours investigating the unit and its performance. The expert made some adjustments to match my old 2003 model to the
then latest Performance Kit.

The unit was checked again all voltages & parameters were found to be correct, however the performance was still poor.

The dealer then very kindly, on a temporary basis installed a brand new Injector Pump, ECU, Flowmeter and any other item that could be a reason for the poor performance.

The vehicle was now driven hard for several miles up and down the motorway and a slight improvement was achieved, with a promise that the
vehicle would learn and slowly improve the performance, but as you guess, the vehicle is hard of learning and has not achieved much in a year.

On the positive side, if you can hold the revs and the momentum, then nothing I know can match it, but if you get stuck, then
God help you or a couple of old 80’s.


Vehicle Spec:
Current Milage: 80,000miles
Chassis/win JTEBZ29JX00021214
Variant. KDJ120 (K)
Version. KDJ120R-GKMEYW(EB)
Engine. 1KD1033481


Jorgen KDJ120 (UK)

[DocK Member Find all posts View Profile Close DocK]

Re: Toyota Motorsport - Diesel Performace Kit

G'day Jorgen. Couple of things you need to consider for low down torque and better performance. It is best to get the turbo spinning more freely, for that you need a larger dump pipe - 3 inch, and free flowing exhaust. That plus the chip is the way to go. However, if you have the non D4D engine the performace gains from the chip will not be felt as much. For a non D4D - Lets say you went from around 96Kw at the flywheel to about 115Kw - about a 10-15% gain, it wont feel all that much. I know from my dynos with the D4D on the DPK it went from about 127KW at the flywheel to about 150Kw at the flywheel. That translates to seat of the pants performace especially with the added torque on tap.
Cheers
DocK

[Davros Advanced Member Find all posts View Profile Close Davros]

Re: Toyota Motorsport - Diesel Performace Kit

He said that his a D4D model though. They had D4D engines in Europe for several years before us due to their more suitable fuel. Since the fuel companies have changed our fuel to European spec, we have had the latest diesel engines here too.

[Jorgen45 Lurker Find all posts View Profile Close Jorgen45]

Re: Toyota Motorsport - Diesel Performace Kit

Hi Dock, Thank you for your reply.
When you talk about the dump-pipe, are you talking about the first part of the Exhaust?
Have you got a couple of pictures that shows the Dump-pipe and the routing of the exhaust?
Regards Jorgen
KDJ120 (UK)

[rodw Lurker Find all posts View Profile Close rodw]

Re: Toyota Motorsport - Diesel Performace Kit

Hi Folks,


My aim was to get more power in the low revs to overcome the vehicles poor power characteristic in a Desert conditions as when you try to pull out
of deep dry sand where it is absolutely essential that the wheels do not spin.

You get enough power at 1800 revs, but that is no good for the clutch and only of use if your aim is to dig the vehicle deep into the sand.

Jorgen KDJ120 (UK)

Jorgen, What tyre size do you run on your desert trips? Speaking form recent experience with my D4D Hilux, I have to say regearing the diffs is the best way to go. I swapped my 3.783 difs out for some Prado Landcruiser 120 4.1 diffs recently wen I added two ARB air lockers and the additional torque is amazing. On my auto, riding my brakes downhill is a thing of the past! I am running 32" tyres (265/75R16) stock was 29" 205/80R16. Oh and I run a chip too.

In slippery wet clay on my first outing, with one car winching himself out of the slop with no traction, the next one spinning tyres with two ARB lockers engaged, I walked up the same track without engaging lockers and no wheel spin. I am sure the difs (and good tyres) were the reason...

You should be able to get some replacement diff ratios to suit from Just Differentials out of the US.

[rodw Lurker Find all posts View Profile Close rodw]

Re: Toyota Motorsport - Diesel Performace Kit

Hi Dock, Thank you for your reply.
When you talk about the dump-pipe, are you talking about the first part of the Exhaust?
Have you got a couple of pictures that shows the Dump-pipe and the routing of the exhaust?
Regards Jorgen
KDJ120 (UK)

Yes the first bend right behind the turbo. I am keen to get a performance exhaust on. Give John Devlin a call at Silverstone autosports http://www.silverstoneautosport.co.uk/home.html and see if he has any ideas. I cold sell you a system, but I think the freight would be a killer!

[Jorgen45 Lurker Find all posts View Profile Close Jorgen45]

Re: Toyota Motorsport - Diesel Performace Kit

Hi Rodw,

I run on BFGoodridge 265/70R17A/T (Original size 265/65R17), which relate to an 8% drop in torque available at the wheels.
However I expected the TTE unit to recoup some of this 8% loss, but sadly not.

Also the vehicle is 3400Kg Plus, when in an expedition ready state which does not help, so I think I shall go for a better exhaust as a first improvement.
Any idea of what percentage improvement to expect from a performance exhaust

Jorgen KDJ120 (UK)

Hi Folks,


My aim was to get more power in the low revs to overcome the vehicles poor power characteristic in a Desert conditions as when you try to pull out
of deep dry sand where it is absolutely essential that the wheels do not spin.

You get enough power at 1800 revs, but that is no good for the clutch and only of use if your aim is to dig the vehicle deep into the sand.

Jorgen KDJ120 (UK)

Jorgen, What tyre size do you run on your desert trips? Speaking form recent experience with my D4D Hilux, I have to say regearing the diffs is the best way to go. I swapped my 3.783 difs out for some Prado Landcruiser 120 4.1 diffs recently wen I added two ARB air lockers and the additional torque is amazing. On my auto, riding my brakes downhill is a thing of the past! I am running 32" tyres (265/75R16) stock was 29" 205/80R16. Oh and I run a chip too.

In slippery wet clay on my first outing, with one car winching himself out of the slop with no traction, the next one spinning tyres with two ARB lockers engaged, I walked up the same track without engaging lockers and no wheel spin. I am sure the difs (and good tyres) were the reason...

You should be able to get some replacement diff ratios to suit from Just Differentials out of the US.

[rodw Lurker Find all posts View Profile Close rodw]

Re: Toyota Motorsport - Diesel Performace Kit

Hi Rodw,

I run on BFGoodridge 265/70R17A/T (Original size 265/65R17), which relate to an 8% drop in torque available at the wheels.
However I expected the TTE unit to recoup some of this 8% loss, but sadly not.

Also the vehicle is 3400Kg Plus, when in an expedition ready state which does not help, so I think I shall go for a better exhaust as a first improvement.
Any idea of what percentage improvement to expect from a performance exhaust

Jorgen KDJ120 (UK)

Jorgen,

Is that pulling a trailer? That is an enormous weight for the D4D. The Hilux has a Gross Vehicle Mass (GVM) of 2780 kg and it is a commercial vehicle. I'm not up with the Prado Landcruiser GVM. You really sound like you are pushing it! I might add, mine is probably overweight fully kitted too!

From what I have heard a good exhaust will give around 7% increase in power/torque from stock, but dont expect that to add on top of the TTE chip. It won't be that much.

Your tyre size is similar to mine (I run 265/75 R16). Is it auto or manual? Also, what is the diff ratio on your car? ( I guess it is around 4.1) I suspect the exhaust will help a bit, but with that weight and tyre size upgrade, you have everything going against you.

The manufacturer of the chip I sell says this:

We generally regard it as a good idea to combine our units with other modifications like free flow exhaust systems and sport air filters or larger intercoolers. This will allow you to use higher power settings for longer spells.

I reckon you are going to need to throw everything at this, the exhaust and maybe a water-air intercooler, but also restoring factory geraing ratios after adding larger tyres would also help.

Oh, and you may not hear from me for a week or so as I am off on an expedition of my own!

[DocK Member Find all posts View Profile Close DocK]

Re: Toyota Motorsport - Diesel Performace Kit

Point taken about the earlier release of the D4D in UK.

I recall that the VX had a mass of about 1930kg and a 900kg load limit. That means a GVM of 2830kg in Oz anyway. I remember in the specifications that the GXL had a higher vehicle mass and thus lower load capacity. If you are at 3400kg Jorgen you are about 500kg over the vehicles recommended working limit. All things being equal that is - unless of course you change suspension etc. I don't think the chip can offer you that much with all that extra weight on board.

Looks like your Prado needs all the help it can get - 3 inch dump pipe, 3 inch free flowing exhaust with sport muffler and if you have it over there how about a LPG/Diesel conversion as well? The LPG adds about another 20% torque.

Good luck and enjoy that trip.
Cheers
DocK