AutoTap question in here
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Launching!
Joined: Nov 2001
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AutoTap question in here Just starting to use the AutoTap. A post on a Corvette board says that fuel cell 20 relates to idle, cell 21 relates to deceleration, and cell 22 relates to WOT. Therefore, after importing a file into a spreadsheet, when averaging LTFT's should I only consider the LTFT's where fuel cell 1-19 is indicated? When averaging O2B1S1 and O2B2S1 should I consider only those readings where fuel cell 22 is indicated, or should I consider only the readings where throttle position is at 100? To determine if the engine is lean or rich, do I go by the average or by the extremes of the group? Thanks for any help. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
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Joined: Nov 2001
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From: Clarkston
Re: AutoTap question in here Thats the general rule I follow but I can also tell you that I've seen my car sitting at a stop light in other cells!!
Yea, I'll take a nice long record and then set ltrims off of cells 1 to 19.
For my WOT settings, I actually don't use TPS or 22 as an indicator anymore. I'll record my 1/4 run. I can now tell (by watching PRM) when I burn-out, stage, launch, shift and shut-down. I generally will take my 02's from a couple of frames after launch (to them a chance to transition) all the way to a couple of frames right before shut-down. This is what I use to average for 02's works great for me!
The reason I don't capture TPS or cells during WOT runs is refresh rates. Unless I'm looking at (or for) something else very specific) I want to minimize what I capture for the quickest (and most) data logging. My base capture consists of only RPM-KR-Timing-B1-B2. I have another table that I use to capture temps, one where I look at MAF freq, etc.
Hope this helps!
Mark
Yea, I'll take a nice long record and then set ltrims off of cells 1 to 19.
For my WOT settings, I actually don't use TPS or 22 as an indicator anymore. I'll record my 1/4 run. I can now tell (by watching PRM) when I burn-out, stage, launch, shift and shut-down. I generally will take my 02's from a couple of frames after launch (to them a chance to transition) all the way to a couple of frames right before shut-down. This is what I use to average for 02's works great for me!
The reason I don't capture TPS or cells during WOT runs is refresh rates. Unless I'm looking at (or for) something else very specific) I want to minimize what I capture for the quickest (and most) data logging. My base capture consists of only RPM-KR-Timing-B1-B2. I have another table that I use to capture temps, one where I look at MAF freq, etc.
Hope this helps!
Mark
