Originally Posted By 360view
Thanks for sharing the Magnaflow info.

Earlier in this thread i browsed the Rockauto selection of 1993 cat cons and had the suspicion that some might be more effective than others, since the two brands that met the ridiculously tough California NOx specs were much more expensive.

I would guess that a "universal" cat con sold in 2016 might have much better NOx reduction than the original cat con from 1993
The primary cost of a Cat is the Platinum and Palladium catalyst elements, the aftermarket Cats either A- cut corners and don't work well (or for very long), or B- cost nearly as much as the OE units. In CA the OBD2 Cats have to warranty performance= OE spec, so they cost much more. I.E. you get what you pay for. Cheap Cats will get you through this time, but in 2 years shruggy