cat pipe question
 

How do you tell when the catalytic converters are clogged/no longer effective / hurting performance?

I am pretty sure that when your cats get clogged, they will get really hot and start glowing due to them being so hot. Drive your car at night for a little while, then look under your car and see if they seem to be glowing.
Derek

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347 Stroker Motor: Balanced, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley AFPR, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 73mm Vortech MAF, 70mm TB, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC and Smog del, rear seat del.

thanks, just got back from a pretty hard drive, and nothing is red or glowing, I thought I smelled something today and figured I would ask...kinda smelled like rotten eggs (bad cat?)?

Could also be a bad 02 sensor. I've had them cause nasty smells.