Sensor tweaks
Please note: the state of the art (and our knowledge) has progressed significantly since 2006, when this was first posted. Many of the speculations presented over the course of this thread were just that: speculation.
It was all part of the quest to figure out 'how it works". Lately, this characteristic seems to have been supplanted by an ongoing contest to see who can garner the most shills to overwhelm the forums with second tier advertisements, thereby gaining market share. It's no longer the "TDIClub", it's the "TDIvendorsInfomercialClub". It wasn't always this way.
Back in the day, these forums were a place where new ideas were welcomed and there was a lot yet to be discovered. Now many things are taken for granted, that were unknown or not even thought of several years ago. Posts like this were one aspect of the sense of pioneering and discovery that made Fred's forums so much fun for innovators.
Nowadays, many of the "truths" are simply stuff that was repeated over and over. and eventually gets read by an innocent third party, who repeats it. Eventually, if this cycle repeats enough, the idea goes "viral", which kind of makes it a truth unto itself. Too many of these "truths" are simply based on bad information from the past (ignorance) or even flat-out lies in an attempt to gain some market share advantage over the competition. By and large, public debate and discovery are discouraged, because it interferes with someone's marketing plan. Whole 100-post threads are started and cultivated to "cover the tracks" of vendors to "document" new "problems" that are nothing more than posturing which is intended to cover for an inability to provide a product or service for reasons that are completely unrelated to the contrived technical discussion.
this is not one of those threads.
Please bear in mind, this thread does not represent the current best knowledge, which has been gained over the intervening 6+ years. We've learned that things actually work the way they do for different reasons than was originally speculated "back in the day". I will not be discussing the particulars in public. However, if some guys want to experiment for themselves, and find out "how it works" you may use some of the info discussed here as a guide to develop your own experiments, and come to your own conclusions.
------------------------- Original post follows:
Experimenting with another sensor tweak on the VE-cars. (not PD) Seems to help a lot with smoke and better power to boot, especially in hot weather.
Here it is: cut the wire going to the fuel temp sensor, and also the Intake Air temp sensor, and insert a 2200 ohm resistor in-line in each of them to fool the computer into thinking the fuel and intake air are cooler than it actually is.
If you do just the fuel, the car idles funny, but if you do both, it's good.
Maybe just my imagination, hopefully someone else can try it and verify/refute. Let the discussions begin.
Please note: the state of the art (and our knowledge) has progressed significantly since 2006, when this was first posted. Many of the speculations presented over the course of this thread were just that: speculation.
It was all part of the quest to figure out 'how it works". Lately, this characteristic seems to have been supplanted by an ongoing contest to see who can garner the most shills to overwhelm the forums with second tier advertisements, thereby gaining market share. It's no longer the "TDIClub", it's the "TDIvendorsInfomercialClub". It wasn't always this way.
Back in the day, these forums were a place where new ideas were welcomed and there was a lot yet to be discovered. Now many things are taken for granted, that were unknown or not even thought of several years ago. Posts like this were one aspect of the sense of pioneering and discovery that made Fred's forums so much fun for innovators.
Nowadays, many of the "truths" are simply stuff that was repeated over and over. and eventually gets read by an innocent third party, who repeats it. Eventually, if this cycle repeats enough, the idea goes "viral", which kind of makes it a truth unto itself. Too many of these "truths" are simply based on bad information from the past (ignorance) or even flat-out lies in an attempt to gain some market share advantage over the competition. By and large, public debate and discovery are discouraged, because it interferes with someone's marketing plan. Whole 100-post threads are started and cultivated to "cover the tracks" of vendors to "document" new "problems" that are nothing more than posturing which is intended to cover for an inability to provide a product or service for reasons that are completely unrelated to the contrived technical discussion.
this is not one of those threads.
Please bear in mind, this thread does not represent the current best knowledge, which has been gained over the intervening 6+ years. We've learned that things actually work the way they do for different reasons than was originally speculated "back in the day". I will not be discussing the particulars in public. However, if some guys want to experiment for themselves, and find out "how it works" you may use some of the info discussed here as a guide to develop your own experiments, and come to your own conclusions.
------------------------- Original post follows:
Experimenting with another sensor tweak on the VE-cars. (not PD) Seems to help a lot with smoke and better power to boot, especially in hot weather.
Here it is: cut the wire going to the fuel temp sensor, and also the Intake Air temp sensor, and insert a 2200 ohm resistor in-line in each of them to fool the computer into thinking the fuel and intake air are cooler than it actually is.
If you do just the fuel, the car idles funny, but if you do both, it's good.
Maybe just my imagination, hopefully someone else can try it and verify/refute. Let the discussions begin.
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