I don't think this would be an issue with the NSX, which has a much more advanced ECU, port injection and overall design. I say swap in OEM cats if you can and see what happens.
Me too. The last EGR I cleaned was on my dad's 1984 Lincoln MK VII when I was about 12 years old. It was caked and crusted with hard black carbon and was causing a rough idle, etc. After we cleaned it, the car ran smoothly. This was on a Ford 302 V8 with throttle body fuel injection however, remember those?
yea i can put my OEM cats back on but like i said earlier, they won't pass smog since they were throwing a CEL light previously... I guess I can put them back on and see what the dealership says but it will take a while for the ECU to throw another code... sigh
What I don't understand is the dealer didn't even check the EGR valve nor did they check the spark plugs or o2 sensors.... maybe I should talk to another dealership?
