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#1 |
Registered User
![]() Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
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dual exhaust
I want to put dual exhaust on my truck (’81 swb). Should I put another cat on it? What are the laws in CA. I tried the looking at the CA DMV vehicle code but I couldn’t find anything about it.
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'72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht |
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#2 |
Real Men Wear Orange
Join Date: Oct 2005
Location: NC
Posts: 89
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Re: dual exhaust
If you aren't concerned with how well it flows, the stock downpipe and cat flow pretty well.....just split it at the muffler. If you want true duals you probably have to put cats back on. For trucks that age...it seems pretty standard around the country to require cats at least for a couple more years.
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#3 |
LED King
Join Date: Jan 2003
Location: Sacramento, CA
Posts: 2,088
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Re: dual exhaust
I've looked into it and our trucks MUST have the Y-pipe from the factory and ONE cat. It is ILLEGAL in California to put two cats on our trucks. True dual, H-pipes, and X-pipe are also illegal. It sucks but the great state of Kaleefornya doesn't like to make it easy to modify cars.
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Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32 |
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#4 |
Registered User
![]() Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
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Re: dual exhaust
sounds like a bunch of installing and removing then.
__________________
'72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht |
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