I have never seen this or heard of it before, an O2 Sensor powerchips. A friend sent me a link and asked if they are any good. Anyone know anything about these. Says it regulates voltage going to the EEC from O2 to manipulate the Air/Fuel for more power. Would that not screw up your air fuel ratio?
Anyways, I always get good answers here, thanks for the help
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.
The last thing you wanna due is mess with the O2 voltage. This only makes things worse if something else starts to go wrong in the A/F department. I don't see a way, that you can change the voltage readings and the ECM not notice it.
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????
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