I have been throwing these 2 codes since I did my header install and EGR delete.

DTC Code : P0101
Description : Mass Air Flow (MAF) Sensor Performance

DTC Code : P0121
Description : TP Sensor Circuit Insufficient Activity

For the p0101, I am assuming to clean the maf, and reset and try again.

But I wanted to see if you guys have experienced these codes and have any tips and advice.

Thanks,
Matt