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Old 03-29-2013, 04:37 AM   #168
roger 04 rt OP
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Joined: Nov 2011
Location: Massachusetts
Oddometer: 2,296
Now I'm switching back to some information on the plug 'n play device that shifts the lambda (AFR) of a stock Narrowband oxygen sensor.

Narrowband O2 Closed Loop Shift, progress report.

Proto 2 of the Narrowband shifter seems pretty well set for the R1150 series. I have found an interim connector supplier at a too-high-price but it does allow me to have some preproduction units built. (Proto 2 Photo below, it needs to be prettied up with black cable, etc. Also, there is no exposed chip on the production unit) and it is very watertight.

For installation: the idea on the 1150 would be to pull the tank, connect the connectors in-line with the stock O2 sensor, run the grey cable along the right side, place the O2 circuit on the air filter cover, and attach a ground to the battery.

The specs look about like this:
(S1 means setting 1)

S1 14.7:1 (stock)
S6 14.35 0.15 AFR (2% richer)
S7 14.15 0.15 AFR (4%)
S8 13.8 0.2 AFR (6%)

There are a lot of steps to get a product to production and to market but there are some resources at to work those issues, can't say yet on timing.

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