Hondata

I recently noticed via Datalogs, that my TPS sensor is fluctuating under WOT. It reads zero when closed and 101 when wide open. When logging pulls it reads 100% until 5500, then it starts falling and fluctuating between 89-100. The injector duty also starts to fluctuate. The battery volts start to drop as the rpm increases as well. From 14.1 down to 13.4 in the upper rpm range. The TPS amd INJD start to fluctuate once below 13.5 volts. Any idea? Alternator going bad?

More than likely there is a wiring issue that is intermittent and is happening at higher RPM when there is more vibration, Try your ECU in a known working vehicle and see if it reads correctly.