A family owned company with a rich racing heritage and a passion for muscle cars and street rods. To simplify efi and deliver better overall performance to your engine.
Msd Atomic Efi Tuning Tuning Tuning Page 10 Full Size
Msd atomic efi running rich. I had the target idle rpm set to 750 800 initially. At present i have it set at 138 to 1 at idle 14 to 1 at cruise and 128 at wide open throttle. I just finished installing a msd atomic efi on my car. I am able to adjust the af ratio with it. About atomic msds atomic efi systems were designed with two goals. Things which can cause this are interference air leaks in headers faulty ecu or faulty 02 sensor.
When the sensors output is above 05 volt it tells the ecu that the mixture is rich and needs to be leaned out. Lower than 1413 your engine will make more power to a point but past that point youre just wasting fuel. To simplify efi and overall performance. Conversely if the output value is less than 05 volt the mixture needs to be. Conclusions and gripes from the installation of the msd atomic efi after the system has tuned itself and quite a few miles have been ran. Engine is running way rich but o2ecu thinks that it is lean and so adds more and more fuel.
I think about 195 205 in traffic but my temp sensor is running. 125 at wot is probably a little rich as well. Again too rich just wasting fuel and under extremes youll actually lose power when too rich. Wondering if i may have to use the controller and set idle afr rich at idle and adjust it down once it starts up. We have over 55 years of experience delivering the best high performance auto parts from the best. Simplicity is achieved through with less wiring to ease installation plus programming is simple with no pc required.
One major tip at the end. 127 131 would be more in the ballpark. Performance is served through advanced self learning properties for the best driveability results from idle to full throttle blasts. Msds atomic efi systems were designed with two major goals. Not sure if this is just an efi related issue but my msd atomic efi had been stalling out on cold starts. Simplicity was achieved through component integration resulting in easier installation and programming.
Fired right up and idles great but smells a bit rich and burns my eyes. Cant think of anything else. What would be best for me.
Gallery of Msd Atomic Efi Running Rich
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