Scanmaster vs Datamaster display units
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Scanmaster vs Datamaster display units
I noticed today a couple differences between my scanmaster and datamaster that should actually be the same. What I am referring to is the injector pulsewidth and right/left bank. On my scanmaster the right/left bank is pretty easy to distinguish between b/c they are labled with an R(supposidly pass side) and an L(supposidly drivers side) however, on datamaster the left column corrisponds to the right bank on the scanmaster. Anybody know how to switch them around? There is no right/left designation unfortunately or I cant find one if there is.
The injector readings are what really have me scratching my head though. At idle my scanmaster shows 1.4 ms but datamaster will show 2.5 ms. As far as I know scanmaster measures in milliseconds but I cant varify this like you can with datamaster which actually lables them BPW mS. Which one is actually using the measure of millisec.??
The injector readings are what really have me scratching my head though. At idle my scanmaster shows 1.4 ms but datamaster will show 2.5 ms. As far as I know scanmaster measures in milliseconds but I cant varify this like you can with datamaster which actually lables them BPW mS. Which one is actually using the measure of millisec.??
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Re: Scanmaster vs Datamaster display units
Every DataMaster file anyone has ever sent me (and there are 100's) has labels designating the left and right O2 sensors, BLM's, integrators, base pulse widths. e.g. - "O2 Left", "O2 Right". I always get the files in .csv format, since I don't have DataMaster and prefer to manipulate the files in Excel to look for problems. Not sure how the .csv format compares with DataMaster's default .uni report format.
There is nothing "supposedly" about "L" being the drivers side and "R" being the passenger side.
DataMaster reports the "base pulse width".... and I have had a problem with this, and the way it results in excessively high injector duty cycles being calculated. It appears the "base pulse width" may be a number extracted before the PCM finishes the complete pulse width calculation. I've suggested to DataMaster owners that they try and resolve this with TTS, but so far no one has taken my up on this after nearly 3 years.
There is nothing "supposedly" about "L" being the drivers side and "R" being the passenger side.
DataMaster reports the "base pulse width".... and I have had a problem with this, and the way it results in excessively high injector duty cycles being calculated. It appears the "base pulse width" may be a number extracted before the PCM finishes the complete pulse width calculation. I've suggested to DataMaster owners that they try and resolve this with TTS, but so far no one has taken my up on this after nearly 3 years.
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Joined: Nov 2001
Posts: 3,515
From: Kansas
Re: Scanmaster vs Datamaster display units
Originally Posted by Injuneer
Every DataMaster file anyone has ever sent me (and there are 100's) has labels designating the left and right O2 sensors, BLM's, integrators, base pulse widths. e.g. - "O2 Left", "O2 Right". I always get the files in .csv format, since I don't have DataMaster and prefer to manipulate the files in Excel to look for problems. Not sure how the .csv format compares with DataMaster's default .uni report format.
There is nothing "supposedly" about "L" being the drivers side and "R" being the passenger side.
There is nothing "supposedly" about "L" being the drivers side and "R" being the passenger side.
Fred, I also noticed if I idle long enough the PCM will go back onto open loop. I have it setup to idle in PE mode to keep the BLMs from splitting and my idle going crazy. Also find it much easier to control the idle fueling to keep the smog at a minimum. Why would the PCM do this?
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