whats with the O2 sensor powerchip?

here is a link

TrNr050 said:

Never heard of them

Click to expand...

domindart said:

Dont know, I myself just cleaned out my O2 sensors.

Click to expand...

Oxygen Sensor POWER Performance CHIP by O2 Power Chip

The ad is pure ********.

First, they can't even speak straight about the warranty. They say lifetime...they say ten years.

Second, the ONLY thing that can be done in the O2 line is to slightly adjust the CLOSED LOOP air/fuel ratio. Once you go WOT the mass airflow sensor and the internal tables in the EEC set the fuel, the oxygen sensors inputs on the EEC are NOT EVEN USED!!!!

Those guys are just ripping people off. My bet would be they have a ten cent resistive divider inside a can. This would make the engine slightly richer when in closed loop, like at light throttle on a warm engine. It has to be something like that because the O2 sensor is a scalar voltage that bounces high or low when rich or lean. It is always bouncing around. The only change possible is to raise or lower the voltage the O2 centers around.

The flaw in their lies is when the TPS input or engine loading goes high, the computer ignores the O2 sensors inputs. You can take the O2 wires off during heavy loading or short them and the car will run exactly the same at WOT.

So they are liars. And I'm being nice because I'm in a good mood.

Tom

At WOT the O2's aren't used, BUT the ecu does remember the KAMRF values for any parts of the fuel tables that may have learned correction factors while running in CL.
Basically, what is learned in CL should be applied to OL as well....ASSuming, that you hit load/rpm ranges in CL that would equate to OL conditions....
(IIRC, the KAMRF tables are load vs rpm???)

A resistor *might* have an impact on AFR, but it's hard to say.
Would I spend $5 for shipping if the item itself was free????
NO!!!

You'll get more out of buying a beer :bigthumbsup