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Title: Running a single EGT for both banks, software fix Post by: jibberjive on February 26, 2012, 11:36:37 PM Not sure if I should post this here or in the disassembly section. But anywho, on my car I've currently got one OEM EGT installed, and Zeitronix EGT sensor. Each of the EGT's serve a purpose as follows:
Zeitronix-- -I can log real time values, below the threshold of where the stock ones don't read. -I can use an EGT threshold as a trigger input to my Zeitronix ZAVT-1 alarm box, to potentially trigger other relays in case of hardware failure -They're reliable Stock-- -Can utilize the stock safe guards relating to the EGT triggers in the ME7 -1 is less likely to fail than 2 -I kept an old one that is still working, and sold a new one (the newer EGT's from Audi have had a much higher failure rate) Of course, a single EGT can only be installed in one bank, but I figure a single bank is better protection than no bank, and any global issue won't be bank specific. Currently, I've got the EGT's tuned out, because I've only got one hooked up. My thoughts are that I want to figure out either: -How to tune out just one bank's EGT input or -How to have the single EGT's input be applied to both banks This post is pre-deep research, so if there's already an easy method, please enlighten me. Otherwise, I'm thinking regarding the second method that there's obviously somewhere in the code that each EGT calls for it's input signal from the sensors somewhere. If I were to be able to track down that location in the code, I could switch the byte(s) to have the passenger's EGT maps get their input from the driver's EGT as well. This would be my first foray into tracking down/disassembly/hex editing. Thoughts? Title: Re: Running a single EGT for both banks, software fix Post by: Jprechel on February 27, 2012, 08:54:31 AM Just piggy back the signal wires at the back of the ecu. I had an egt fail so that's what I did. Still reads and works fine. Checked with vag com. Ps if an egt fails just clamp the middle of it with a 1" c-clamp.
Title: Re: Running a single EGT for both banks, software fix Post by: phila_dot on February 29, 2012, 10:08:32 PM I would try the following:
CLAATR2 - 0 CLAATS2 - 0 TABGSS2 -FF Title: Re: Running a single EGT for both banks, software fix Post by: jibberjive on April 22, 2012, 04:23:31 AM So I'm finally getting around to this. I've done a lot of reading in the FR and I'm pretty sure I've figured out what I need to change in the software to have the ECU read one EGT's input for both EGT's. Now the hard part for me is finding the location of these variables, as I have no idea how to go about disassembly. Can anyone help me find the location of these variables, or possibly point me to somewhere where I can figure out how to find them myself?
tcchats_w tcchats2_w tccpats_w tccpats2_w p_ats p_ats2 Just piggy back the signal wires at the back of the ecu. I had an egt fail so that's what I did. Still reads and works fine. Checked with vag com. Ps if an egt fails just clamp the middle of it with a 1" c-clamp. Do you by chance know which wires/pins they are that you connected? And did you literally just bridge the wires with a jumper splice of some sort (for example using a quick-tap on both wires with a jumper between them)?I would try the following: I'll probably try this first.CLAATR2 - 0 CLAATS2 - 0 TABGSS2 -FF Title: Re: Running a single EGT for both banks, software fix Post by: jibberjive on October 12, 2012, 11:01:39 PM Just to complete the loop on this for future searchers, the locations of those variable were found, and an XDF with those variables can be found here:
http://nefariousmotorsports.com/forum/index.php?topic=2668.0title= |