Replacing mid-exhaust section, do you need O2 emulator? in 07 - 13 Lexus IS250 / IS350 / IS-F Posted December 27, 2019 If you replace the second set of cats with straight pipe, do you need an O2 emulator? Thanks
Replacing mid-exhaust section, do you need O2 emulator?
in 07 - 13 Lexus IS250 / IS350 / IS-F
Posted
If you replace the second set of cats with straight pipe, do you need an O2 emulator? Thanks