2k2 TB... Right now there is no idle control, it idles the same, cold or hot. I'm thinking about switching to a PF TB, but the 1500 idle doenst bother me TOO much

Q: Can you elaborate a little as to what the knock sensor does and how to desensitize it? Is the dummy sensor an aftermarket item or just the original one moved and grounded?

Sarah: The knock sensor is like a microphone bolted to the block. When it senses knock, it sends a signal to the ECU to retard timing and prevent any damage to the engine. Before 2000, Nissan ECU's had an analog filter board that was tuned to filter certain frequencies with a bandpass filter. The ECU compared unfiltered and filtered signals to determine if the engine was knocking or not but at higher engine speeds, it can't reliably determine knocking. Also, a car running very low octane gas could fool the ECU into detecting knock and retard the timing. After 2000, Nissan changed to digital signal processing converting waveforms from analog to digital. Using complicated algorithms of digital sensoring techniques to determine knocking, this new system pushes the limit to find the most power right before the engine would begin to knock. However, real aggressive timing maps cause the ECU to overreact and pull timing before the engine knocks. Also, the sensor can confuse normal engine and valve train noise for knock and prematurely retard the timing, also causing erratic dyno runs. To keep the ECU from prematurely retarding the timing which will also produce more consistant dyno runs, Jim Wolf Technology determined that relocating the sensor from the block so it's still electronically connected to the ECU, but not receiving the brunt of engine vibration, is the best way to desensitize the knock sensor. Another way would be to plug in a ½ million ohm resistor to lessen the signal the sensor sends to the ECU. But don't completely disconnect the knock sensor- the ECU will default to low octane mode and you'll lose a lot of timing.