Reply to "AFR opinions ???"

crazydaveEFI Expert

Overall the chart is not too bad. Here is my take.

Idle may be a little rich depending on the cam. 14 might be better.

The cruise range is a little lean at part throttle. 15 is too lean for the power range. You will need to determine the MAP range you will run at cruise. Set your 15 at that range and just above. Then taper to the power ratio. For starters until you see how it will run and perform, I suggest no less than 14.7, even though 15 is really close enough.

I dont suggest the 16 at the bottom of the chart. Unless your engine is designed for lean ratios, you can cause stumble when you return throttle.

The other thing I notice is you only go to 50 kpa on the bottom of the chart. This is 15in hg. You should get better than that running. You need your chart to go to at least 30kpa on the bottom.

7/1/0710:33 PM

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>

Skip to main content

Membership Required

Remove From Your Block List

Manage Follow Preferences

Block

Please wait...