Power Vision Information Thread
#1751
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Last edited by SGLarry; 02-12-2012 at 12:30 PM.
#1752
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Another note. I had the TTS as well and switched to the PV. The tables are all the same since they come fromt he ECM. The PV is just easier to use. No laptop, no additional display needed, etc. You shouldn't have any trouble at all.
Last edited by JustDennis; 02-14-2012 at 06:49 AM.
#1753
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Thanks Brother, that's good and reassuring to hear. I will definitely read the tutorial you made.
You don't need excel at all to use the PV or make datalogs or adjust your tune. It id helpful if you want to look at the data collected while you are riding but you don't need it at all to get the full functionality out of the PV. The link Larry posted above is in my sig as well.
Another note. I had the TTS as well and switched to the PV. The tables are all the same since they come fromt he ECM. The PV is just easier to use. No laptop, no additional display needed, etc. You shouldn't have any trouble at all.
Another note. I had the TTS as well and switched to the PV. The tables are all the same since they come fromt he ECM. The PV is just easier to use. No laptop, no additional display needed, etc. You shouldn't have any trouble at all.
#1754
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Without a doubt, that tutorial is what I consider the 'bible' getting started with PV tuning. There is very little PV tuning info out there on the general web. That doc combined with this thread, and the experts on it, should be all you need to get a great tune on your own. Just read, and re-read that doc. Be sure to pay attention to the sections that apply to what O2 sensors you're going to tune with (NB stock, or DJ WB). The procedures are different.
#1755
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thankfully i bought my pv from jamie at fuel moto and they are programing a custom map for me because after sifting through 176 pages im more confused than ever. is there a tuning efi harleys for retards i can get that explains the terminolagy and how to read the colerfull ve tables and when to know if you increase or decrease numbers in the ve table or spark knock adjustments? why are the ve charts colored, and what color is good or bad? sorry but im just not comprehending this stuff yet
#1756
![Default](https://www.hdforums.com/forum/images/icons/icon1.gif)
thankfully i bought my pv from jamie at fuel moto and they are programing a custom map for me because after sifting through 176 pages im more confused than ever. is there a tuning efi harleys for retards i can get that explains the terminolagy and how to read the colerfull ve tables and when to know if you increase or decrease numbers in the ve table or spark knock adjustments? why are the ve charts colored, and what color is good or bad? sorry but im just not comprehending this stuff yet
#1758
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The stock O2 sensors just tell the ECM if it's metering the correct amount of fuel to meet the requirements of the AFR table in cruise range. The AFR table is a request. You put in there whatever you want, and based on VE, MAP, ET, O2, RPM, TP, etc the ECM delivers the amount of fuel required to meet that request. The stock sensors provide a 'trim' level of sensing, thus the 'narrow' connotation. They are only good 14.5-15.2 or thereabouts. The only reason they are there is to meet EPA requirements for a complete combustion in a specific narrow range of RPM/Engine load.
VE is just a map/model of how the engine actually breathes in comparison to an average of all HD engines of the same type. What HD puts in there from the factory they figure is 'good enough'. With the PV you can actually model how YOUR specific engine breathes. No two stock engines will breath exactly the same. This is also the beauty of the PV, when you make a change (AC, exhaust, cam, etc) to the engine, you can do tuning runs to update the VE tables for the new breathing characteristics. You can leave all the other stuff alone if you had already setup the desired AFR table. With the new VE tables representing the new breathing characteristics the ECM will provide the correct amount of fuel to meet the same AFR requested. Only now it will be more or less fuel to meet the same AFR since the amount of air going in/out of the engine (VE) has changed (more or less depending on mods done).
*Experts, please correct any of this if I'm off here.
#1759
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Many maps come with the cruise range set to 14.6 so there is not need to change the AFR to tune those areas with the stock O2 sensors.
Beasleyiv - you are spot on.
Last edited by JustDennis; 02-15-2012 at 06:43 AM.
#1760
![Default](https://www.hdforums.com/forum/images/icons/icon1.gif)
thankfully i bought my pv from jamie at fuel moto and they are programing a custom map for me because after sifting through 176 pages im more confused than ever. is there a tuning efi harleys for retards i can get that explains the terminolagy and how to read the colerfull ve tables and when to know if you increase or decrease numbers in the ve table or spark knock adjustments? why are the ve charts colored, and what color is good or bad? sorry but im just not comprehending this stuff yet