Today I just randomly had my Aeroforce on KR. Expecting to see nothing I was suprised when I did.

NO boost related mods. -7C out.

This is what happens.

Cruising @ 70kmh.
Put it to the floor.
Downshift, and spike to about 3 degrees, almost simultaneously.
RPM'* climb, KR starts falling until it reaches 0 and stays there.

Is this normal?

I am running 91 octane. The only mods the car has should help reduce it. My broken converter just got replaced with a magnaflow hi-flow. I have a RX-4750 and rice pipe, no heatshield yet.

This isn't looking good especially since I planned on dropping to a 3.4 this summer, with a PCM, P-Log, and a good heat shield on the intake.

(Posted it here because I wasn't doing any modding)

3* of KR around shifts is completely normal

That'* normal. The quick spike to 3 degrees KR when the throttle snapped open is the engine going lean with a lot of advance when it starts to accelerate (with TCC and top gear). As the mixture caught up with the engine and went rich the knock went away and the KR went back to zero. The TCC unlocking and dropping out of 4th lightened the load on the motor as well. You can look at your TPS voltages (perhaps adjust the TPS on the throttle body a little higher)

How did your O2 values look while under WOT?

BTW, the reason I am suggesting a look at your TPS values goes like this:

The only sensor that tells the ECM what you want to do is the TPS, by virtue of it being both a quick acting sensor and it'* strapped directly to the throttle...it sees your request to change engine speed as the throttle blade is moving. That'* even quicker than reading the vac signal behind the TB.

If this makes any sense: The TPS, MAF, MAT, and IAT are all sensors that cause gross changes to happen, they are looking at the current operating temp, the temp of the air getting sucked in, the density of the air getting sucked in, and what you want the motor to do.

The rest of the sensors tell the ECM what happened after the fact. Knock, RPM, VSS, and O2. The O2 is the slowest of the sensors to respond and is far enough downstream to be only used as a cross-check. (in other words, the O2 sensor cannot be used to compute fuel delivery in real time...by the time the exhaust gas hits it it'* too late. So it'* only an average "how are we doin' ? " sensor.

Does that make sense?

That makes perfect sense, thanks. I was under the impression any KR while unmodded (especially in cold temps) was bad, but it makes sense after that explaination. I havn't watched O2 under WOT, but I could. Should be very accurate to, as the sensor is brand new.

I don't know what KR means. Came someone help me out?

Knock Retard. The computer starts to pull timing when the knock sensor detect a knock or ping. It helps to protect the engine from damage.

Edit - Doing a search on KR or knock retard will give you many threads that will explain it in more detail.