Engine: JDM GSR w/MSD 6AL/MSD coil/MSD plug wires/MSD cap/button/NGK bkr7es plugs

While the car is cool, it doesn't have this problem, but once it warms up the slightest bit, it will stutter at any RPM under WOT or high throttle. Sounds like a timing 2 step. Any ideas? New distributor cap, plugs, rotor button, and the plug wires look new. Idles perfect and low throttle feels perfect, no wideband so I can't tell what it's doing while it's stuttering.

 

what ECU are u running.....when ur below WOT ur car reads closed loop, so its pulling from the sensors. At WOT ur car reads open loop, so its pulling from the fuel and ignition map on ur ECU. i would borrow one from a friend and see.

 

I tried my buddy's ecu and it didn't change a thing.
But it's a P72

Now the car is idling rough, and is only smooth at like 4,000-5000rpms just cruising. Almost any amount of load and it acts up. Just did a fuel filter and didn't help a bit. Changed spark plug wires with a friend and it didn't change. Maybe the coil? My narrowband gauge (Yea, I know it's more or less a light show) was reading rich when this started but is now showing lean... and the spark plugs look like it's running lean too.