failed emissions this morning.

[Buzz]

If the car passed the E-Test the two previous years, followed by failing this year, with the same tune - the E-Test failure is not tune related.

Given that the car is predominantly stored (not used) the mileage since the last service / tune up is not that relevant. Store vehicles are often more susceptible to moisture / corrosion issues.

Start by checking for vacuum leaks and confirm consistent fuel pressure. Inspect the distributor cap and rotor, and change the oil and filter. It is a good idea to also replace the oxygen sensor.

A compression and leak down test will help rule out stuck piston rings, and / or a valve that is not fully seating / sealing.

If after all of these tests / checks, the vehicle still fails emissions, there is a very good chance that the catalytic converter(s) is the cause. Aftermarket cats won't last nearly as long as the OEM cats will.