First ATAP Got some ???s
Thread Starter
On The Tree
Joined: Apr 2002
Posts: 143
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From: Manhattan KS
First ATAP Got some ???s First, I checked to see if I had any trouble codes..none.
Then I drove around and watched my knock retard, and it was 0.
Now my questions: What should my O2 sensor readings be, and which ones should I look at (B1S1, B2S1, B1S2, B2S2)? What should my timing be? What am I looking for.
My car is fairly stock. Engine mods are Catback, TB bumpstop mod, FRA, Ported TB, Lid, and !CAGS, de-screened MAFS.
Then I drove around and watched my knock retard, and it was 0.
Now my questions: What should my O2 sensor readings be, and which ones should I look at (B1S1, B2S1, B1S2, B2S2)? What should my timing be? What am I looking for.
My car is fairly stock. Engine mods are Catback, TB bumpstop mod, FRA, Ported TB, Lid, and !CAGS, de-screened MAFS.
TECH Regular
Joined: Nov 2001
Posts: 499
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From: Clarkston
Re: First ATAP Got some ???s There are 2 different times you want to monitor data, cruise and WOT.
During cruise, there is no use to monitor your O2's (all you'll see is them switching from rich to lean). Depending on what you want to do, monitor RPM, timing and KR and then add Long Term Fuel Trims for both Bank 1 and 2 as well as what fuel "cell" you're in. You could then monitor Misfire current cyl 1-8 to see how you're running. (Check in the FAQ section on ls1.com, there is a good thread up there on ltrims)
At WOT, RPM, timing, KR and both of your front O2 sensors B1S1/B2S1 are what you want. From there, you can add different things depending on what you want to do. MAF flow can help you gauge different mods, base injector pulse widths to see how high a % duty cycle you're running, etc. This lists are many. I've got different setups depending on whether I'm monitoring drivability, checking the fuel system status, verifying WOT shift points, etc.
Have Fun!
Mark
During cruise, there is no use to monitor your O2's (all you'll see is them switching from rich to lean). Depending on what you want to do, monitor RPM, timing and KR and then add Long Term Fuel Trims for both Bank 1 and 2 as well as what fuel "cell" you're in. You could then monitor Misfire current cyl 1-8 to see how you're running. (Check in the FAQ section on ls1.com, there is a good thread up there on ltrims)
At WOT, RPM, timing, KR and both of your front O2 sensors B1S1/B2S1 are what you want. From there, you can add different things depending on what you want to do. MAF flow can help you gauge different mods, base injector pulse widths to see how high a % duty cycle you're running, etc. This lists are many. I've got different setups depending on whether I'm monitoring drivability, checking the fuel system status, verifying WOT shift points, etc.
Have Fun!
Mark
TECH Apprentice
Joined: Dec 2001
Posts: 357
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From: Whitby Ont Canada
Re: First ATAP Got some ???s Some good reading here... LTRIMS/O2 readings
<small>[ May 09, 2002, 09:07 PM: Message edited by: J&JsTA ]</small>
<small>[ May 09, 2002, 09:07 PM: Message edited by: J&JsTA ]</small>
