Thread: ECU Remaps for D4

Hi guys,
We are now in Derby and the vehicle is still performing well.
The fuel consumption is still great and I am consistently getting 14.7-16.5 l/100 towing 3.2-3.5 tonne with tent and water cans on top
Power for overtaking is more than adequate and the motor is definitely more responsive :-D

Originally Posted by dirvine

If you look on the Roo systems web site, They do a drag race between a stock and moded D4. Now I am 1st to admit it could be just an advertorial, but I am sure if one could get a proper before and after test done, then there would be a conclusive answer.

Yes, seen that, like most of us. That vehicle was the whole 9 meters (metrified whole 9 yards ), most aggressive tune and exhaust system. Interesting how the power figure increase was given but not torque or post tune graphs. Actually a graph is up on the site in a different thread and there are a few comments about it (Roo Systems ECU Remap, including EGR system disable and catch can fitting - booked in) and the fuel economy claims just seem a bit optimistic to me. But in the end I if you are happy with the result then that's all that matters.

Peter

Originally Posted by Bobc163

Hi guys,
We are now in Derby and the vehicle is still performing well.
The fuel consumption is still great and I am consistently getting 14.7-16.5 l/100 towing 3.2-3.5 tonne with tent and water cans on top
Power for overtaking is more than adequate and the motor is definitely more responsive :-D

Out of curiosity, what sort of speeds do you tow at? Are you using Sport mode? Cruise Control?
I tow 2.8 tons of full size van, mostly at the posted speed limits, with no roof ornaments on the D4 & on a good day I might get 17l/100.
I'm envious of your fuel economy figures.

I am envious as well. Admittedly I have roof racks (aero design) and a side awning. Also I tow a 2400kg off road caravan and it sits up rather high (3.2metres). On my recent trip when towing I never got better than 16. Mostly 17-19. This is towing on bitumen at the posted speed limits, and on dirt roads mostly at 80kph. This was a real figure not what the computer was saying. It was at least 2-3 litres out Ie saying 12-16 when it was more like 14 to 19. When I next get the car serviced, I am going to ask them to recalibrate this aspect as it it just plain rubbish. Oh also I should mention my vehicle has the Maxxis 19' LT tyres. As they are heavier that may also contribute to mote fuel usage.

I am using sport mode and set cruise for 96 k actually 90 change back to 5 the regularly on inclines

Originally Posted by PeterJ

Yes, seen that, like most of us. That vehicle was the whole 9 meters (metrified whole 9 yards ), most aggressive tune and exhaust system. Interesting how the power figure increase was given but not torque or post tune graphs. Actually a graph is up on the site in a different thread and there are a few comments about it (Roo Systems ECU Remap, including EGR system disable and catch can fitting - booked in) and the fuel economy claims just seem a bit optimistic to me. But in the end I if you are happy with the result then that's all that matters.

Peter

Yer this was my thread, I had mine done by roo systems a few weeks ago now.
After driving a few hundred kms in it now I can definitely say I'm very happy with the results. The most noticeable difference is that the torque is far more 'available' throughout the rev range. the drive is far smoother it now just pulls a bit better - and aLOT better in low range. low range sand mode for example is a whole different experience.

Also, I'm happy with the 5 year unlimited km warranty, gives me assurance that it is in fact a safe tune and not just turning the car into a black smoke belching rocket.

Overall, I enjoy driving the car more now than I did back then...and I'm happy I did it.

I got my 2013 3.0SDV6 RRS done by Roo systems Brisbane in May last year. Also fitted an exhaust. My results much same - smoother, less lag, fuel use almost identical, more get up and go but not to extent that I think we have pushed it too far. I got the touring/towing tune. Really couldn't complain I also had LLAM's fitted by them at same time, again no issue. They want to do the exhaust on my 77 Update RRC - its a small job for a big business but they were genuinely interested in car. I had a look at exhaust done on Gleno's 70 series - excellent work top quality. They promised same, and good price, so might take the RRC to them.

I finally bit the bullet and got a Roo System remap done today. Will pick the vehicle ( TDV6 ) up tomorrow and see how it goes. Looking forward to having more torque available when I need it.