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When I had my '98 1100 Honda Shadow Spirit, I installed a set of Cobra free flowing slip-on pipes. Soon afterwards they started turning blue. I called Cobra and they recomended rejeting the carbs because of a the lean condition created by the free flowing exhast. They also recomended using a polish called BlueJob on the mufflers to restore their luster. They were right on both accoords. The Bluejob worked great with some elbo grease. The mufflers never blued again after installing the Dial-a-jets and my gas mileage did not suffer like my friends who installed larger carb jets in their Shadows.
They work automaticlly, by drawing the extra fuel only when needed.
I've read both pros and cons on the DAJ. Some say it works other not. Seems like a great idea though. Especially if you're on a road trip across mountains and down to the beach.
It seems like a fella could jet the carbs for ...oh...say...Denver and if he goes "up" from there the DAJ would simply not kick in. But if he were to go "down" from there the DAJ would add fuel to compensate for the lean condition created by descending to a lower altitude (ie more available air). Is that pretty much how it works? And is it easy to "dial" in the jet?
I saw where one fella did not drill his carb body to install the DAJ system. Instead he drilled the intake mans and installed there. The DAJ support people say it works just as well at the intake boots as in the carb body. Is this what you did?
I and everyone I know that used them on the Shadow forum installed them just outside the entrance to the carb in the rubber intake tube that runs between the carb and the aircleaner box.
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