Wideband temporary install for tuning?
Thread Starter
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Joined: Dec 2001
Posts: 2,907
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From: Bergen County, NJ
Wideband temporary install for tuning? Are any of you installing the wideband temporarily for tuning and then removing it?
I was trying to figure out how to install it, and if I go before the cats it means putting an extra bung in my coated headers. If I wire it to run as a wideband andd narrow band I'm afraid I'll burn it up in no time since the 02 bung is right at the collector.
So I was thinking of running it there but then removing it once I get the tune completed. Is anyone else doing this and if so how?
I was trying to figure out how to install it, and if I go before the cats it means putting an extra bung in my coated headers. If I wire it to run as a wideband andd narrow band I'm afraid I'll burn it up in no time since the 02 bung is right at the collector.
So I was thinking of running it there but then removing it once I get the tune completed. Is anyone else doing this and if so how?
You can run it at the Y if you only care about tuning WOT, only p/t will be affected by the cats. Otherwise, it wont hurt to have a second bung on one side as close to teh cats as you can. Just use the plug when youre done.
Thread Starter
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Joined: Dec 2001
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From: Bergen County, NJ
Thanks, I'll be concentrating on driveability and Idle tuning. I suppose I can just assume it will read a bit leaner after the cats and either use the rear 02 bungs or add bungs to the y pipe instead of the headers - thoughts?
it wont be predictable how much leaner it will be. Dont you have port scans in jersy? Just chissle out your cats and tune away 
if thats not an option, youre gonna have to take your chances up on a collector. The wideband sensor can be had as cheap as 55 if i recall, so its not that big a deal if you fry it after a crapload of tuning.
if thats not an option, youre gonna have to take your chances up on a collector. The wideband sensor can be had as cheap as 55 if i recall, so its not that big a deal if you fry it after a crapload of tuning. 
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Joined: Jan 2002
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From: Orlando, FL
Which WB are you using? If it is an LM-1 or LC-1 then you can replace one of your factory pre-cat sensors. I did this on my 05 GTO this past weekend and it worked great. You just need to route one of the analog outputs to the O2 connector going to the PCM and setup the LC or LM to simulate a narrowband output.
Tim
Tim
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From: Orlando, FL
Originally Posted by horist
in the past... I've replaced the PRE CAT sensor w/my wideband... and then forced open loop SD ... tuned, and then setup back to stock
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Thread Starter
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Joined: Dec 2001
Posts: 2,907
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From: Bergen County, NJ
Originally Posted by GuitsBoy
it wont be predictable how much leaner it will be. Dont you have port scans in jersy? Just chissle out your cats and tune away if thats not an option, youre gonna have to take your chances up on a collector. The wideband sensor can be had as cheap as 55 if i recall, so its not that big a deal if you fry it after a crapload of tuning.
if thats not an option, youre gonna have to take your chances up on a collector. The wideband sensor can be had as cheap as 55 if i recall, so its not that big a deal if you fry it after a crapload of tuning.
I think you're saying to add a bung to the collector and then plug it when I'm done tuning?
Which WB are you using? If it is an LM-1 or LC-1 then you can replace one of your factory pre-cat sensors. I did this on my 05 GTO this past weekend and it worked great. You just need to route one of the analog outputs to the O2 connector going to the PCM and setup the LC or LM to simulate a narrowband output.
Tim
Tim
in the past... I've replaced the PRE CAT sensor w/my wideband... and then forced open loop SD ... tuned, and then setup back to stock
Thanks for the help guys - much appreciated
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Verdad Gallardo Port scans = OBD-II inspection testing. They dont hook up a snifferr to the exhaust anymore. They have it here in NY now.
Yes, either replace your narrowband o2 (hard way) or just have the second bung installed (easier way) and cap it when youre done. Of like it was suggested, run O/L till youre done, and the stock o2 sensors wont make a bit of difference.
To force open loop, simply up the closed loop enable temp to 255 or something rediculous that you wont actually hit.
Yes, either replace your narrowband o2 (hard way) or just have the second bung installed (easier way) and cap it when youre done. Of like it was suggested, run O/L till youre done, and the stock o2 sensors wont make a bit of difference.
To force open loop, simply up the closed loop enable temp to 255 or something rediculous that you wont actually hit.
