Early this week, I was accelerating in 2nd gear on an on ramp getting onto the freeway when right around 5000 rpm and I got a knock event, just 1. I went to 3rd to about the same rpm and got another. The Link pulled a substantial amount of timing as a result. I assumed I got a bad batch of gas, so I kept out of boost and when I got home I put in some of my race fuel (about 2 gallons) and left the existing map alone as I have been running this ecu street setting for about 3 years. Ran the car again and the same thing happened. I got the car home again and went to the knock screen on the Link pad and rev'ed the engine to about 5000 in blips. Since there is no load on the engine I figured that it's shouldn't register anything. Unfortunately the knock #'s rose to 40 really quickly then back down to 1.
Well, I figured that I have something loose near the sensor (which is what Keith @ FM suggested as well) so I put the car up on my lift this morning and checked every bolt or nut I could get my hands on; bell housing, motor mounts, starter bracket, oil pan, ancillary brackets all the way up to the valve cover bolts. Nothing is loose. So I figured that maybe the Quaife with all of it's racket could be causing it, so I pushed in the clutch to quiet the gear set and rev'ed the motor to 4500 rpm, the numbers shot up to 38 really quick then came back down to 1 when I released the throttle just like the first time. So, I'm at a loss. Could the sensor be going out or am I missing something else?
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