• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

I wonder if this is possible

Jrmobb

Jrmobb

Husqvarna
AA Class
I was thinking, I wonder if this would be worth it to try.

Have the stock o2 sensor and wire up the sensor and the race mode cap on a switch so you can jump from closed loop to open loop with the flip of a switch for racing and fuel mileage ?
 
It would work but I think you would have one setting that runs great and one that is a stumbling mess.
 
I know of 2 issues...

1. You would have to shut off the bike between switching, ECU only checks for race plug only at start-up.

2. You would have to supply power to the O2 sensor heater circuit while is race mode to keep O2 sensor from getting damaged from exhaust contaminates.

This can be done with a 2P2T switch. This is something I though of selling as a plug-in kit, but wasn't sure of the demand.:excuseme:
 
seymore;83877 said:
2. You would have to supply power to the O2 sensor heater circuit while is race mode to keep O2 sensor from getting damaged from exhaust contaminates.
Click to expand...
I have disagree with you on keeping the pre-heater on continuously, that would cause the most damage to the sensor. To quickly supply voltage to the ecm the sensor is preheated. Once the operating temp is reached the preheater circuit is turned off by the ecm. Now that is true for modern EFI auto systems, I would say the mikuni system would be same.

As far as having switch to open and close the 02 circuit, I wouldn't want to add any more resistance to this circuit. You could bring the plug to a easy reach location, and unplug the o2, and install resistance plug when you wanted better fuel economy.
 
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