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Running rich at idle

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Old Jun 20, 2006 | 07:58 PM
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Default Running rich at idle

So i have the idle bouncing thing figured out. I did a little playing with the desired airflow table (efi live) The car runs rich at idle. I dont have the wideband hooked up yet, but its got to be up there. Kinda burns the eyes and nose if im sitting at a light for too long. Can i check this and fix this without my wideband? Or do i just need to quit being lazy and hook it up?

THX ab
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Old Jun 20, 2006 | 08:51 PM
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Stock O2's will tell you about idle with your fuel trims. But, you have to be running in closed loop.
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Old Jun 20, 2006 | 09:53 PM
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what are your ltrims and strims at idle?
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Old Jun 21, 2006 | 06:14 AM
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Do you have CATS?

What are all of your mods?
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Old Jun 21, 2006 | 12:32 PM
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ms3 cam,vararam,headers x pipe (no cats) ls6 intake, pullys,
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Old Jun 21, 2006 | 01:11 PM
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Check the sensors. See if switching the front sensors with the old back sensors helps (since you don't have cats anymore). Vettes are known for lazy O2's with certain headers though. You might be able to get it close, but not exactly perfect.
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Old Jun 21, 2006 | 01:12 PM
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You don't have CATS, get use to the smell even if your VE table and MAF is tuned perfect....
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Old Jun 21, 2006 | 03:35 PM
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Originally Posted by SSpdDmon
Check the sensors. See if switching the front sensors with the old back sensors helps (since you don't have cats anymore). Vettes are known for lazy O2's with certain headers though. You might be able to get it close, but not exactly perfect.
I just put on lt's/y/no cats..and 13111 bosch vette sensors..are you saying they might be 'lazy' . ...and contributing to poor idle?? I am waiting for my VINCI tuner..should be here 1 week...
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Old Jun 21, 2006 | 05:16 PM
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Don't even get me started on the Bosch POS sensors....they're sooooo junk from what I've seen lately.
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Old Jun 21, 2006 | 10:40 PM
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Originally Posted by SSpdDmon
Don't even get me started on the Bosch POS sensors....they're sooooo junk from what I've seen lately.
talked to a couple members here and the concensus is they are good........ they have a wider heat range..used in the more upscale vette...
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