Subject	California Smog Referree: Cat Exhaust Piping Sizing
Posted by	ZVella32 on July 03, 2020 at 9:25 PM
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Message	Around a year ago I got red flagged by the state for my Engine Swap. I swapped a 1993 Twin Turbo Engine into a 1990 N/A 2+2 Chassis. The Smog referee provided a long list of corrections to make in order to pass their requirements. Ive corrected most of the things on the list; however, one of the last things is my piping for my catalytic converters. My car had aftermarket downpipes that I welded cats to. The smog referee took a brief glance and said that the piping on my welded test pipes were to wide. I measured the test pipes and they are 2 1/4 Inches. My question is does a 1993 Twin Turbo 300zx have 2 1/4 catalytic convertor piping. If not what is the sizing for this models piping.
Follow Ups	California Smog Referree: Cat Exhaust Piping Sizing - ZVella32 21:25:49 07/03/20 Re: California Smog Referree: Cat Exhaust Piping Sizing - JULIAN 15:15:24 07/06/20
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