I'm going to be candid and say I don't normally run my car up to redline all that often. Once in a while I get saucy and decide to go crazy on back roads to really feel the 308 shoulder into corners and make Italian music for all to hear. 5,000RPM is usually a good number to aim for on my normal drives. Lately, I came across an issue that only seems to come out after bringing it up to redline. What will happen is: I'll launch out, slam gears for a few miles and when I come to a stop the car will settle back into its idle, only to "lope" and run rough. It sounds for sure like it's running on all 8, but just sorta uneven and abnormal. Blipping of the throttle does nothing; it takes a shutdown and restart for the idle to return to normal. On a normal basis, the car runs perfectly fine. Cold and Warm starts are good, there is balance through the entire RPM range, and the A/F Ratio was verified good before my run today. Now, I've had the fuel distributor and CPR rebuilt by Larry Fletcher some years ago and the ignition system has been gone through by me (wires, iridium plugs, cap, rotor, and two of the three flywheel sensors replaced)... the RPM sensor is still original. Does anyone have any theories? Ideas?