Power Vision Information Thread
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
Jamie- you mentioned touching the CDE tables if needed, but there is no guidance on doing so. Those settings have peaked my interest though but it's very "gray area".
In the interest of learning, how would a PV user go about evaluating changes needed to CDE based on logged data? Or is that something only a seasoned tuner with a dyno can address? TIA-
In the interest of learning, how would a PV user go about evaluating changes needed to CDE based on logged data? Or is that something only a seasoned tuner with a dyno can address? TIA-
Road Master
Joined: Feb 2014
Posts: 804
Likes: 237
From: TN
Dog, my understanding is that the cde tables are used to smooth out the ve tables. going up in the cde tables raises the ve numbers in th affected areas, and vise versa. As far as I know it adjusts the formula used to measure the ve tables/cells. The flatter the ve tables the smoother the engine will be. Max change is like 2%. so if you have an area of the map that is low or high, you can adjust it through these tables. My rear cyl was idling at 66 kpa, went in adjusted the rpm range in the cde tables now it is at 70.3 kpa. had to make several tries at till I got where it is now. After each adjustment you have to do a tuning run, time consuming. As far as I know there is no direct relationship between the numbers on the cde table and how much it will change the ve table. Hope Jamie will join in and shed some more light. I have also done some balancing in other areas on my current tune, just takes time finish the process. It has its limits to 65 kpa and is more effective at lower rpms vs higher rpms
Last edited by Wmitz; Feb 24, 2016 at 07:44 PM.
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
Yes they are part of the "vehicle" logging signals. WBO2 F/R , you have both 'lambda' and 'ratio' WBO2 F/R signals for a total of four. But- I heard that the WBO2 'ratio' signals are only based on gas stoich calculation and would not be wholly accurate with E10 gas. So I really only use the WBO2 'lambda' data because that will be the same regardless of gas type.
Tourer
Joined: Aug 2013
Posts: 457
Likes: 16
From: Reno, NV
Yes they are part of the "vehicle" logging signals. WBO2 F/R , you have both 'lambda' and 'ratio' WBO2 F/R signals for a total of four. But- I heard that the WBO2 'ratio' signals are only based on gas stoich calculation and would not be wholly accurate with E10 gas. So I really only use the WBO2 'lambda' data because that will be the same regardless of gas type.
Last edited by Spazz; Feb 25, 2016 at 09:59 AM.
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
Dog, my understanding is that the cde tables are used to smooth out the ve tables. going up in the cde tables raises the ve numbers in th affected areas, and vise versa. As far as I know it adjusts the formula used to measure the ve tables/cells. The flatter the ve tables the smoother the engine will be. Max change is like 2%. so if you have an area of the map that is low or high, you can adjust it through these tables. My rear cyl was idling at 66 kpa, went in adjusted the rpm range in the cde tables now it is at 70.3 kpa. had to make several tries at till I got where it is now. After each adjustment you have to do a tuning run, time consuming. As far as I know there is no direct relationship between the numbers on the cde table and how much it will change the ve table. Hope Jamie will join in and shed some more light. I have also done some balancing in other areas on my current tune, just takes time finish the process. It has its limits to 65 kpa and is more effective at lower rpms vs higher rpms
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
I also realized that with my specific tune maps, my VE's are TPS based. so there is no visual correlation I can use to determine peaks / valleys in VE based on map load. I'd love to have a map-based set of VE tuning tables. To me, TPS based VE's seem odd as you can have varying map loads for any given TP, and everything else in the tuning is based on map (spark adv tables, lambda table etc).
Jamie posted some good info in CDE back in 2012- see this link post#3300
https://www.hdforums.com/forum/ignit...admin-330.html
Jamie posted some good info in CDE back in 2012- see this link post#3300
https://www.hdforums.com/forum/ignit...admin-330.html
Last edited by LA_Dog; Feb 25, 2016 at 10:16 AM.
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Tourer
Joined: Apr 2012
Posts: 482
Likes: 30
From: Michigan/Florida
If you've selected all four signals (WBO2 F and R, both AFR and Lambda) and want to see all of them in MLV, you have to open the log files in a spread sheet and rename two of the header columns for the data - either the AFR or Lambda pair, as the PowerVision logs both set with the same name with no distinction between them. I add a "L" so that the header column titles are WBO2 FL and WBO2 RL). Note that this Row is not at the top of the sheet, but down below the vertical list of signals, just above the columns of actual signal data. I suggested to Roy from DJ that it would be nice if the PV didn't duplicate the names......
