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08-16-2013, 04:19 PM
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#1 |
  Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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air fuel ???
So I recently put a wide band gauge on the car and punched out my cats when I had the car dynoed about a month ago my air fuel was 11.8 pretty much accross the board however since punching out my high flow cats and installing my gauge the gauge reads 10.8 its a prosport gauge any ideas? did the cats change this or is there something I need to know about these gauges car seems to run pretty much the same as before
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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08-16-2013, 04:22 PM
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#2 |
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Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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just fyi the 11.8 reading came from the wide band on the dyno..
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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08-16-2013, 04:52 PM
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#3 |
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Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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Another FYI when it was dynoed it was a sniffer that was used for af not a wide band as I didnt have a wide band then
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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08-16-2013, 07:48 PM
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#4 |
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10.11 @ 136.32
Drives: Black & Yellow 2SS/RS LPE LS7 427 Join Date: Mar 2010
Location: Redcliff, Alberta
Posts: 957
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Pull the O2 sensor and hang it so it is in clean air. Then push and hold the little button on the side of the controller box for 3 seconds until the gauge reads "2", this will indicate that it is calibrating. When complete, replace the sensor in the exhaust stream.
If that doesn't work order a new sensor from Prosport. Part number is 17025. Bryan
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08-16-2013, 08:22 PM
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#5 |
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PHAT B33
Drives: 2012 TF3 Camaro 2SS/RS M6 Join Date: Jun 2012
Location: Dark of the Moon
Posts: 1,460
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If you had the WB post cat it'll read a few % lean compared to what it measures pre cat. The cats were working. Since you punched them WYSIWYG.
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Another 1 of 371 '12 T3 LS3 M6's built.
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08-16-2013, 08:27 PM
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#6 |
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Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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What I had for readings before was from a sniffer at the end of my exhaust at the dyno it read 11.8 pretty constant during dyno and made good hp since then I punched out the cats and installed a wide band just where one of the 02 sensors plugged into the cat which is now hollow am getting 10.8 at wot reading consistent I did recal in open air but same results so I don't know wat to think
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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08-16-2013, 08:33 PM
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#7 |
        Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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Sniffers usually ready 1/2 point leaner than up by the header.
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Nick
Corvette Z06 -1200ish rwhp |
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08-16-2013, 08:49 PM
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#8 |
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Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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But i would think if I was a whole point off I would not have made the 540 rwhp I did with the Maggie 3.8 pulley and bolts on I have but I don't know how much a point rich would affect my hp numbers
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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08-16-2013, 08:51 PM
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#9 |
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Drives: 2011 2SS Join Date: Jun 2013
Location: Kansas City
Posts: 997
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I may pull a plug and take a look at it maybe post a picture and see what people think
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2011 2SS,fti th400, ECS 1500, Flex Fuel, Boost built 376, squash fuel system
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