I have been fighting this problem for a few weeks now, and its not getting better. I filled my tank with 1/2 91 octane Mobil 1 and 1/2 101 octane TRICK race fuel(unleaded), and dumped some 104 octane booster in as well.
Still about 2.5 degrees of KR at idle(about 1100 rpm). If I step on the gas and bring it up to about 1700rpm or so, the KR goes away from there on up(in neutral).
On a WOT run, it'll max at around 5 * KR.
I've gotten under the car and can't really hear anything out of the ordinary. The amount of KR is definetly related to load on the engine, if I punch it at 2000 rpm in gear, the KR goes right up to 5* and only drops a little as rpms go up. If I slowly bring up rpm I get less than 3 * all the way up.
Nothing has changed since I put the race gas in.

I don't know.

The split blms are as follows:
The left stays pretty close to 128 MOST of the time, it will dip to 121 and go up to 131 now and then.
The right on the other hand will go from 121 or so on up to 146 pretty often. The o2 sensors are both fluctuating as they should most of the time, except when its cold and at WOT.
At idle, in fuel cell 16, the left stays at 128 or very close, and the right will be at 134,146, 144, etc.
I ordered a new o2 sensor for the right just in case.

I don't know again.

My IAC counts are around 53-59 at idle.
The car seems to run alright, except idles rough and the idles flucuates as well. When the idle drops to the lowest, about 800 or so, it idles really rough and the KR goes to about 3.3*. I don't know what it is supposed to idle like with a cam, so I don't really know if its idling normal or not. I don't know anyone with knowledge of these cars except you guys.

Is this thing safe to drive? I don't know what to do next.

BTW- This engine is new and it has been running like this since I first fired it 2 months ago, I haven't been driving it for 2 months, it only has 300 miles on the new engine. The damn transmission gave up the ghost at the 100 mile mark and the opti did the same at the 295 mark.

 

Hey Fireman,

At your request via email, I'll COPY this to the Advanced Tech forum. Maybe the guys there can help you out. Good luck! I've read a little about this but not enough to give you a "for sure" answer Good luck!