DLL Results Vs Dyno Jet
Just as a foot note for DLL to dyno comparisons, the last dyno run I made with my car took over twice as long to climb through 4th gear as the car does on a level road. That meant I was seeing intake temps of ambient +40 'C on the dyno when I'd see less than ambient +20 'C on the road, and the ECU was having to pull timing due to heat related knock. I don't believe the dyno result under those kind of circumstances would be an accurate indication of the real-world power of the car on the road.
Food for thought...
Glenn
Data Log Lab Support
Food for thought...
Glenn
Data Log Lab Support
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Joined: Apr 2004
Posts: 16
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From: UK
The quickest way to zoom into a particular area of the graph is using the right-click menu on the graph itself.
Here's two examples that appear complicated from the descriptions, but are very quick and easy once you get the concept:
To zoom into a particular point that's being displayed:
1. Left-click one of the graph lines at the point in time you want to zoom into, so that you can see a point highlighted.
2. Right-click the graph and select the "Zoom In" sub menu and then a suitable amount of zoom within that sub menu.
To enlarge a specific area of the graph:
(e.g. the graph is displaying samples 1 to 5,000, and you want to enlarge samples 1,000 to 1,500)
1. Left-click one of the graph lines at the point in time that you want to be the left-hand edge of the zoom in (sample 1,000 in our example), so that you can see a point highlighted.
2. Right-click the graph and select "Set Plot From".
3. Left-click one of the graph lines at the point in time that you want to be the right-hand edge of the zoom in (corresponding to sample 1,500 in our example), so that you can see a point highlighted.
4. Right-click the graph and select "Set Plot To and Draw Graph".
My personal experience of DLL power graphs compared to Sun dynos is that they are within 5%, e.g. DLL max power of 240hp, dyno max power of 245hp. However I know that others see more variation. But also bear in mind you see as much variation between different dynos as you do between a specific dyno and DLL. The main thing you gain from using the same dyno (including DLL) is repeatability and then the ability to see the relative effect of tuning or part changes.
Glenn
Data Log Lab Support
Here's two examples that appear complicated from the descriptions, but are very quick and easy once you get the concept:
To zoom into a particular point that's being displayed:
1. Left-click one of the graph lines at the point in time you want to zoom into, so that you can see a point highlighted.
2. Right-click the graph and select the "Zoom In" sub menu and then a suitable amount of zoom within that sub menu.
To enlarge a specific area of the graph:
(e.g. the graph is displaying samples 1 to 5,000, and you want to enlarge samples 1,000 to 1,500)
1. Left-click one of the graph lines at the point in time that you want to be the left-hand edge of the zoom in (sample 1,000 in our example), so that you can see a point highlighted.
2. Right-click the graph and select "Set Plot From".
3. Left-click one of the graph lines at the point in time that you want to be the right-hand edge of the zoom in (corresponding to sample 1,500 in our example), so that you can see a point highlighted.
4. Right-click the graph and select "Set Plot To and Draw Graph".
My personal experience of DLL power graphs compared to Sun dynos is that they are within 5%, e.g. DLL max power of 240hp, dyno max power of 245hp. However I know that others see more variation. But also bear in mind you see as much variation between different dynos as you do between a specific dyno and DLL. The main thing you gain from using the same dyno (including DLL) is repeatability and then the ability to see the relative effect of tuning or part changes.
Glenn
Data Log Lab Support
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iTrader: (38)
Joined: Aug 2005
Posts: 9,319
Likes: 1
From: Virginia Beach, Virginia
I agree, I wouldn't quote DLL numbers to people to tell them what my AWHP is but it's a fantastic tool to help me determine if the changes I'm making are helping or hurting.
same with my g-tech, I wouldn't quote it as my track times but it's consistent enough to tell me if I'm making improvements or not.
same with my g-tech, I wouldn't quote it as my track times but it's consistent enough to tell me if I'm making improvements or not.
Account Disabled
iTrader: (38)
Joined: Aug 2005
Posts: 9,319
Likes: 1
From: Virginia Beach, Virginia
I test my g-tech at the 1/8th mile track this weekend, it was 1-2mph too fast but the E.T. was dead on... I suspect it's the difference in the way the track calculates MPH vs how the G-tech does (more accurate)
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