MiataAndy

Just bought my '90 - 347 Monster...need to get through emmisions as I want to register the car. Car has no catyltic converters. My understanding from talking to a state emmissions rep is that I need an visual inspection on the cats and to pass the emmissions through a test designed for the original vehicle...I don't have much more details than that...Here is what is on there State web site...


"If your vehicle is a 1995 or older, and has a GVWR, that is less than 8500LBS, it will be tested using a method called Acceleration Simulation Mode (ASM 25/25). This type of test simulates driving at 25 MPH using the dynamometer while applying a 25% load equated to your vehicle make and model. The inspector will insert a probe in your vehicle’s tailpipe to measure the emissions while the vehicle is driven on the dynamometer."


My mechanic friend and I agreed that I should find the cheepest ones that will fit and then remove them after the test. I'd rather not remove them as I need to be tested in another two years.

my requirements are passing the test, keeping performance while the cats are on and leaving them on, and ground clearance...

So...

Will a small cheap set of Cats pass emissions in CT with a ford Stroker 347 set-up - RPM performer - EFI...with a stock A9P...Any thoughts on the above would be great...Meierznutz...your in CT right? any experience here you can share?

There is no OBD required testing for this year car...

Thanks in advance.

ireneB

Emission and Exhaustion is always correlated with each other. it is important for cars ad motors.

tbone heller

Install a set of gutted converters, or even just a set of converter heat shields to give the appearance of a set of actual converters, & see if it passes.

chpmnsws6

This can actually create turbulence in the cat.

Throw a set of decent high flow cats on and enjoy keeping the environment a little better.

v8slowyatta

They have 2.5" High flow cats that you can run in its place. It will pass the sniffer test and visual. Its a good way to keep the cats from ruining performance and its a good permanent solution to your 2 year smog issue. We have to do the same thing here in California