Nissan 370Z Forum - View Single Post - OBD readiness

SouthArk370Z · 12-30-2021, 08:27 AM

If you have empty cats (I'm assuming that means no catalyst in the can), the car will not go to the ready state if everything else is in stock condition.

Most (if not all) modifications (eg, O2 sensor extenders) will fail a visual check.

The only sure solution I know of is to use an OEM-spec cat for a while, until the system shows ready, and you get the inspection. What you do after you pass inspection is up to you.

Edit: You may also need to tweak your tune to get the emissions numbers right.

12-30-2021, 08:27 AM	#11 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	If you have empty cats (I'm assuming that means no catalyst in the can), the car will not go to the ready state if everything else is in stock condition. Most (if not all) modifications (eg, O2 sensor extenders) will fail a visual check. The only sure solution I know of is to use an OEM-spec cat for a while, until the system shows ready, and you get the inspection. What you do after you pass inspection is up to you. Edit: You may also need to tweak your tune to get the emissions numbers right. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma Last edited by SouthArk370Z; 12-30-2021 at 08:31 AM.