Exhaust mods now complete After gettin bored with the exhaust, Ive removed the standard system, and removed the last cat converter, as the yaris has two cats. It now has a 2'' system with a PEX (berklee mufflers) sports resonator in place of the old resonator and an XFORCE cannon out the back. If you're looking to fit a cannon to your Yaris, the body of the muffler can't be too big as it touches on the tow hook under the vehicle at the back. Also, this current mod has caused the OBD II emission system to play up, logging a lean code as there is more O2 going past the O2 sensor now. My new system has much more flow compared to the standard one.Looks like its off to get tuned ASAP. I'll post pics and a sound clip up soon.