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DRR Trophy |
Brand new to having Co2 sensors and monitoring here.It's the wego III system and uses lambda readings. Currently I'm seeing mostly mid .70's and the car is killer in the heat. So probably not changing anything unless it's crazy lean for now. I do want to know more about tuning for when the cooler weather comes though. This combo has always been really good in the heat, but when the cooler temps come, it gets inconsistent and all of it seems to be from the 330 to 660 ft. So let's start with the basic question of which way is leaner and which way is richer. Is a higher number leaner or richer and vise versa? Thanks for any feedback in advance. | ||
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DRR Top Comp |
Smaller number is fatter. You look to be way rich to me but others might disagree. Mid 70's is pretty fat. Clowns to the left of me, Jokers to the right. Here I am....... | |||
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DRR Top Comp |
One more thing, there's a nice color chart on the internet that you can print out to give yourself a guide. Just do a search. Good luck! Clowns to the left of me, Jokers to the right. Here I am....... | |||
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DRR Trophy |
download this handy chart. http://www.hardtail.com/download/lambda-tuning.xls | |||
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DRR Top Comp |
^^^^ Yep, that's the one! Clowns to the left of me, Jokers to the right. Here I am....... | |||
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DRR Trophy |
This is exactly what I've been looking for guys. Thanks so much! | |||
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DRR S/Pro |
I'm at .89 to .93 lambda in the heat depending on what part of the run you look at but different sensors will read slightly different. Mine are in the individual tubes. Did you do your free air calibration? Have your sensors ever seen gas? I'm really surprised to see that rich of a mixture not causing you issues. Curtis ____________________________ 2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion 2018 Div4 Goodguys Hammer award winner | |||
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DRR Trophy |
To be honest, I'm not sure. I bought the car turn key and it's never had any problems. I'm pretty sure it's never seen gas and the guy gave me all the paperwork and a lot of notes he had with the system. I would assume it's been calibrated, but I'm not sure. I'm gonna throw some bigger high speed air bleeds in it this weekend and see how it responds to being leaned out a bit. My experience with alcohol is that's it's happy when it's a little fat (from a consistency standpoint) until the weather changes. Which makes perfect sense now that I know I'm fat and the cooler air is when it gets inconsistent. | |||
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DRR Trophy |
Also, my sensors are in the collectors as opposed to the individual tubes. Looking for a good used 177 Weiand for a SBC | |||
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DRR Pro |
Before you embarrass yourself to long. It's "O2" sensor - oxygen CO2 is carbon dioxide. You may never get an accurate reading with the sensor in the collector. ΜΟΛΩΝ ΛΑΒΕ | |||
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DRR Pro |
Thanks guys. I'm glad you like my chart. It's not carved in stone but gives you a rough idea of where to tune. It's always best to tune fat then lean it down. | |||
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DRR Elite |
Indeed on the o2. Some cars have no choice but to go in the collector. Foxtrot Juliet Bravo | |||
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DRR Top Comp |
We are all making a big assumption that they are calibrated the same and they may not be. Now on mine I am at 12.9 to 13.1 on Gas scale (I run alcohol just use Gas scale for simplicity) which is about .880 to .890 on the Lambda scale or 5.74 to 5.67 on the alcohol scale. So I would say you are probably pretty fat. Once again assuming your system is calibrated like others. And they are right about being in the collector. My understanding is the unlike EGT the O2 should be the same all way down the pipe until it gets too close to outlet where it may be contaminated by fresh air. If you think fresh air may be messing up the signal you could move it further up the pipe or put and extension on the collector. If I was you I would definitely try to lean it down some and see what it does. Think you will like it and it will be more consistent in better weather. https://postimg.cc/gallery/np3zpruo/ "Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion | |||
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DRR Top Comp |
If it’s in the collector and it’s mid 70s, it’s fat. Clowns to the left of me, Jokers to the right. Here I am....... | |||
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DRR Sportsman |
For a brief moment...I thought huh there is a new trick I'm not familiar with utilizing co2? LMFAO. Configuration: 3350#, 582 C.I., 60 - 1.24 1/8 - 5.53@ 126MPH 1/4 - 8.73@ 159MPH 3700#+210lb driver, FULL interior, through mufflers, 10.5 tire. 60'-1.333 (IN 4000ft DA! Joisy Math excluded; 1.25sec using JOISY MATH.) 1/4 - 9.60@144MPH | |||
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DRR Pro |
For those of you that have EGT and / or O2 , are you tuning using these numbers or are you using your ET slip? | |||
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DRR Trophy |
You are correct indeed. It is O2 and Co2 is carbon. I made a typo. Having said that, before you embarrass yourself too long. It's "too" long. Too is an an expression of time. "To" is not. But by all means, thanks for trolling bye. Looking for a good used 177 Weiand for a SBC | |||
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DRR Sportsman |
I usually say "my sensor, in my header collector, on my engine, reads..." Use it as a diagnostic tool, not necessarily an absolute. | |||
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DRR Top Comp |
ET slip. Period. Your O2 may be calibrated different than mine or anyone else's. Tune to best ET and then use your O2 numbers what ever it is to repeat or find your tune after changes. I do not mean for this to sound bad but at the end of the day do you want a car that runs fast or do you want a specific O2 number? Watch your ET. From my experience the EGT's have been totally useless and I do not even record them any more. O2 has been very important. https://postimg.cc/gallery/np3zpruo/ "Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion | |||
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DRR Pro |
First step,,,,,,,,,,,, get your sensor out of the collector. ΜΟΛΩΝ ΛΑΒΕ | |||
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