Also adjust your TPS slightly.
0.30 Volt is the limit in the ecu. At 0.31 Volt or higher the ecu does not recognize idle throttle. Anything below 0.30 Volt is O.K., around 0.17 is perfect.
If the TPS signal at WOT really goes up to 5.00 Volt it would trigger an error.
The signal should stay below 4.95 Volt.