Is you Knock sensor taking performance down for the count?

[LGAFF]

Interesting to note that after running 12.4s @ 117.5mph and then adding a lightweight flywheel I saw a decrease in performance. I had been running 12.6s at 114.5-115 range.....I then noticed my knock sensor was unplugged, problem solved right? wrong! after plugging it in I saw no change, then last year I purchased a Tech 1.....my car was pulling 10 degrees of timing,constantly and in fact on hard acceleration I was pulling even more.....

So I went down to my local parts store and purchased a ZR-1 specific replacement...Pete had warned me to check it by OHMing the sensor and that a ZR-1 sensor should OHM at 3.0-4.0....wrong resistence; this sensor from O"Reillys tested at 99.

Then I tested the one on the spare motor, bad too..no reading

Now keep in mind my 92 has 23K miles on it....and even with the timing retard it seems very seat of the pants fast.....so how many of you weekend warriors at the strip are losing .2-.5 from timing retard.

Time to pull the Fluke meter out and check yours....oh, by the way GM discontinued the Z knock sensor....they are still availble from some vintage parts places, Jerrys, and I imagine Kurts too.

Thanks to Pete for the heads up!