2021 Toyota GR Yaris OPF vs. OPF DELETE ⚠️ Exhaust Sounds Comparison | Revs, OnBoard & More! Acceleration & Sound by turboandstance - March 7, 2021 The GPF/OPF/PPF exhaust filters on modern cars completely ruin the sound, so today these guys decided to upload a video where you can hear a 2021 Toyota GR Yaris with OPF, and compare it with the same car but without the OPF filters. Watch the video, enjoy the sound of this Toyota Yaris GR and leave a comment below. Follow us also on Facebook, Pinterest or Instagram and share this one also with your friends! Leave a comment