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02-24-2011, 03:00 AM
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#1 |
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error 404
Join Date: Oct 2010
Location: soldotna alaska
Posts: 1,252
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do i need cats
90 silverado. tired old 350 wanted to run some straight straight pipes. i told the kid i didnt know if the engine would run right. he said he'd come back in the morning before school. can i straight pipe his truck or does it need the catylitic converters.
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 89 Chevy swb 350 "SJ" DD turned parts truck. SOLD 90 Chevy ext cab loooongbed. "storm trooper" Rust In Peace. 06 Kia sorento wife's car 06 charger srt8 "lucifer" my toy '12 Kia optima |
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02-24-2011, 06:16 AM
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"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,978
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Re: do i need cats
If you have emissions testing in your state. You bet. They are required by law.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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02-24-2011, 07:25 AM
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One day...
 
Join Date: Apr 2008
Location: Tuttle, Ok
Posts: 9,243
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Re: do i need cats
 We dont have to here so i straight piped mine after it got stolen.. |
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02-24-2011, 07:58 AM
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Registered User
Join Date: Feb 2000
Location: Wichita Falls, Texas
Posts: 3,153
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Re: do i need cats
You don't have any O2 sensors behind the cat like the '96+ OBD-II trucks do, so running without a cat won't make your truck run badly or anything. If you want/can do it, go for it.
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02-24-2011, 07:52 PM
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#5 |
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error 404
Join Date: Oct 2010
Location: soldotna alaska
Posts: 1,252
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Re: do i need cats
emissions isnt required where the vehicle is registered. just didnt know if there were O2 sensors behind them. thanks guys.
__________________
89 Chevy swb 350 "SJ" DD turned parts truck. SOLD 90 Chevy ext cab loooongbed. "storm trooper" Rust In Peace. 06 Kia sorento wife's car 06 charger srt8 "lucifer" my toy '12 Kia optima |
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02-24-2011, 09:23 PM
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#6 |
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One day...
Join Date: Apr 2008
Location: Tuttle, Ok
Posts: 9,243
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Re: do i need cats
No just one before either in pipe or manifold.
Last edited by scotts62; 02-24-2011 at 09:24 PM. |
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02-24-2011, 10:01 PM
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#7 |
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Registered User
Join Date: Feb 2000
Location: Wichita Falls, Texas
Posts: 3,153
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Re: do i need cats
Nope. Only '96+ trucks with OBD-II have the sensors after the cats.
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02-25-2011, 09:39 PM
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#8 |
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error 404
Join Date: Oct 2010
Location: soldotna alaska
Posts: 1,252
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Re: do i need cats
got it done. it was in the manifold
__________________
89 Chevy swb 350 "SJ" DD turned parts truck. SOLD 90 Chevy ext cab loooongbed. "storm trooper" Rust In Peace. 06 Kia sorento wife's car 06 charger srt8 "lucifer" my toy '12 Kia optima |
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