It failed in the HC category again...
The number were: 15 mph 61 max MEAS: 98
25 mph 45 max MEAS: 63

Today the numbers were: 15 mph 61 max MEAS: 75 (-23 points from prior)
25 mph 45 max MEAS: 61 (-2 points from prior)

They are suggesting I need a new cat. What a convienience that he also does this kind of work, so I don't know...I called the dealership and I spoke w/a technician and he suggested that it was not the cat and it is not likely that a car w/79k miles would have a shotty cat. He wanted to see the numbers and so I drove there and he said that a cat is not going to make that much more of a diffrence, that it has to be something else and that my car is not throwing a code.

What I've done to date:
1. Spark Plugs, cap & rotor, wires, replaced stock airbox and filter, replaced exhaust manifold, fuel filter, timing, valve adjustment, and 2 treatments of fuel additive, one called Lucas and the called Guaranteed to pass.

As you can see there is not much left to do. I went to a muffler shop and he said he could install an OBD2 Cat but that it is not legal for the car, but it would pass and I would get dinged at the ref. station.

I went to another place calle Nue Art Racing and he suggested I remove the resonator and have another cat welded in place behind the stock cat to burn off whatever the 1st one does not. I don't know where to go with this guys. Any ideas? What options sound the best, should I just let Acura figure it out?