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