Can pass inspection with no cata?

[SMEGMA STENCH]

If they forgo the visual inspection it is possible. A well tuned pre-OBDII car can run clean enough that the cat is not necessary to pass an inspection.

A post OBD-II car is much easier.

Hmm well tuned. Well I do have my timing advanced 2 degrees, and I have to run 93 octane. Maybe that will help somehow?

[JC316]

Hmm well tuned. Well I do have my timing advanced 2 degrees, and I have to run 93 octane. Maybe that will help somehow?

No, you will want to pull the spout connector and you will have the best chance of passing.

[Jimbo]

Hmm well tuned. Well I do have my timing advanced 2 degrees, and I have to run 93 octane. Maybe that will help somehow?

Higher octane fuels will hinder the ability to pass an emmisions test.

[Trick Pony]

My '94 Cobra passed the sniffer just fine with no cats. Backed the timing off to 10 degrees, 87 octane and a bottle of RXP in the tank.

[V8tt]

My '90 GT passed with flying colors and no cats...numerous times. I never did anything special to make it pass either. No RxP..connectors pulling...etc.

[Turbosvo]

Same here, have a 90 5.0 and passed it great without the cats and spout still in