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Default GC 2015 Diesel ECU tune

Hi all, had my GC serviced and tuned at Roo Systems on Friday and wanted to share my early experience. The low down power in the rev range is amazing, where it use to have a hole it’s power is more linear if that’s the word for it. I have a Dyno sheet for it showing before and after. I’ll try to upload the results.
I’m hoping the tune improves the fuel economy as I have slightly bigger tyres and noticeable lost economy. Will report back soon after doing a full tank or two.

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Pretty good bump in HP and torque, I thought the new eco diesels would have put out more NM than that though. Still nothing to complain about power wise though. Cant wait to hear about the fuel economy bump.
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Yes, I am looking at doing the same thing.The figures I am told are what they do at the wheels,
The touring and towing pack is what I'm after, will look with interest on how this tune goes as you report back............
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Default Roo Systems

I had mine tuned by Roo Systems in Nov last year. I was disappointed with the result really. I expected a better increase in power, and the economy when towing has not altered which was one of the main reasons for the tune. Attached before and after dyno results.
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Quote:
Originally Posted by cobbly View Post
I had mine tuned by Roo Systems in Nov last year. I was disappointed with the result really. I expected a better increase in power, and the economy when towing has not altered which was one of the main reasons for the tune. Attached before and after dyno results.
The output figures are 'at the wheels', not flywheel figures.

Your original output of 175.1 Hp (130.5 Kw) is in line with what mine was prior to my first tune. Your final figure is 198.1 Hp (147 Kw) whereas mine was 152.7 Kw.
Mine was done at Horsepower Factory in Dandenong Melbourne. Not sure if Roo Systems use a generic tune or not? I do know that mine was done to suit my engine, not generic.

I then had a custom exhaust system fitted, deleted the DPF and did a couple of other minor things, resulting in a final output figure of 175.5 Kw.

My economy improved, both towing and not towing. The biggest improvement was the torque. It went from the standard 570Nm to 724Nm.

Cheers, Craig
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Does anyone know if the Stealership can detect if you do get (just) an ECU tune done??
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Originally Posted by croweater View Post
Does anyone know if the Stealership can detect if you do get (just) an ECU tune done??
Not only can they detect it, they can overwrite it with an update.


I'd be happy with standard power and torque outputs if I could lose the throttle lag and intrusive torque management.
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Quote:
Originally Posted by Cherokee30D View Post
The output figures are 'at the wheels', not flywheel figures.

Your original output of 175.1 Hp (130.5 Kw) is in line with what mine was prior to my first tune. Your final figure is 198.1 Hp (147 Kw) whereas mine was 152.7 Kw.
Mine was done at Horsepower Factory in Dandenong Melbourne. Not sure if Roo Systems use a generic tune or not? I do know that mine was done to suit my engine, not generic.

I then had a custom exhaust system fitted, deleted the DPF and did a couple of other minor things, resulting in a final output figure of 175.5 Kw.

My economy improved, both towing and not towing. The biggest improvement was the torque. It went from the standard 570Nm to 724Nm.

Cheers, Craig
Well aware that the figures are "at the wheels" Craig. Your comments back up what I was saying about my results being below par on what they should be. I spoke to the tech who did the job a few days after, he was pretty defensive about it. It's been 3 months now so I will contact him again and see what he has to say about it. Cheers
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Quote:
Originally Posted by croweater View Post
Does anyone know if the Stealership can detect if you do get (just) an ECU tune done??
As Troutman mentioned.........it can be detected, however they would have to be looking for it. It can also be overwritten with a software update in some cases, not all.

Horsepower Factory have my original and my current tune on file, so I can have it returned to normal at any time.......or have it re-installed should it get wiped.
I haven't had to have any warranty work done that involves tapping into the ECU, but if I did, I would probably have the original tune put back.

After 128,000 Klm's I have never had the tune wiped. Very happy with the extra power, torque & economy.

Cheers, Craig
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