 Air to Fuel, Runnin Rich |
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 Mar 27, 2004 - 1:38 AM
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 Enthusiast  Joined Nov 8, '02 From Bel Air, MD, USA Currently Offline Reputation: 0 (0%)  |
Hey i just put my air to fuel gauge in and it says im runnin rich as a pig...how do i change this?
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Mar 27, 2004 - 2:18 AM
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Enthusiast Joined May 8, '03 From San Jose, CA Currently Offline Reputation: 0 (0%) |
what mods do you have? what have you changed?
If your o2 sensor is busted or not hooked up right it will read out 1030mv or somewhere around that all the time (RICH). - aba |
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Mar 27, 2004 - 8:17 PM
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 Enthusiast Joined Aug 29, '02 From Dallas, Tx Currently Offline Reputation: 0 (0%) |
You can't tune with a stock narrowband O2. It will tell you if something goes wrong (i.e. you go full lean under boost), but thats it.
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Mar 28, 2004 - 1:27 AM
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Enthusiast Joined May 8, '03 From San Jose, CA Currently Offline Reputation: 0 (0%) |
you can't tune to stoich on a narrowband. this is pretty impossible. but if you want to tune rich...like 12:1, then keep it above 900mv or so. I use a narrowband for daily driving on my haltech with closed loop setup to richen 20% or lean out 10% based on o2 readout. It works fine, but I only modify fuel maps at idle and low rpm and cruising. I wouldn't rely on this at full throttle by any means  In any case, if his AF gauge is pegged at rich all the time it is probably a fault in the sensor. - aba This post has been edited by abatardi: Mar 28, 2004 - 1:30 AM |
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Mar 28, 2004 - 2:51 AM
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 Enthusiast Joined Jul 23, '03 From newport news virginia Currently Offline Reputation: 0 (0%) |
get an afc........
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Mar 28, 2004 - 1:40 PM
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Enthusiast Joined May 8, '03 From San Jose, CA Currently Offline Reputation: 0 (0%) |
tell us your mods first and once we figure out what has been changed, we can come up with a solution for you (i.e. - whoa, you're running 720cc injectors?, etc.). do NOT get an afc and start trying to get your af gauge to read stoich again with your narrowband. You will end up blowing up your engine. - aba This post has been edited by abatardi: Mar 28, 2004 - 1:42 PM |
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Mar 28, 2004 - 7:13 PM
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Enthusiast Joined Aug 29, '02 From Dallas, Tx Currently Offline Reputation: 0 (0%) |
Yeah, thats really what I meant. Its not ideal for part throttle stuff, but it can be done. We spend a suprising amount of dyno time on part throttle tuning, even on racecars that spend very little time there. It really makes a big difference in how they feel. Always keep in mind, the peak of the curve doesn't matter nearly as much as the area under the curve! Thats especially true at part throttle! |
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