LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Cat question.

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Old Oct 18, 2011 | 12:53 AM
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Default Cat question.

My mom is freaking out about me getting lts because she dosent want to go through the trouble getting it inspected. So, can I get a custom y-pipe installed with some high flow cats on it? Will that make it pass. I'm 17 btw, so that's shy she is on my case about it :/
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Old Oct 18, 2011 | 01:23 AM
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Details on the car? OBDI or II?
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Old Oct 18, 2011 | 01:50 AM
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96 camaro z28
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Old Oct 18, 2011 | 02:04 AM
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First what state are you located in, and you'll need to find out the details on smog checks in your area.
You could always wait until after you get it smoged, then install the LT headers.

Last edited by 99Bluz28; Oct 18, 2011 at 02:11 AM.
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Old Oct 18, 2011 | 03:12 PM
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There are manufacturers that make dual catted ORYs (I think Kooks makes one) but they're absurdly expensive and moving the cats from the stock location is a failure of the visual inspection. The driver's side cat sits dangerously close to the fuels lines so you'd have to reroute those. Also, having cats in your exhaust system is going to rob you of 5+ at the wheels.

Find out the regulations in your county.
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Old Oct 18, 2011 | 03:29 PM
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http://www.txdps.state.tx.us/vi/insp.../item_insp.asp

I live in Harris county. It says all gasoline powered vehicles are exempt from emissions. Does that mean I'm in the clear?
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Old Oct 18, 2011 | 03:35 PM
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Originally Posted by Mavn
http://www.txdps.state.tx.us/vi/insp.../item_insp.asp

I live in Harris county. It says all gasoline powered vehicles are exempt from emissions. Does that mean I'm in the clear?

Sounds like your good to go.Throw away that cats and smog it up
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Old Oct 18, 2011 | 03:39 PM
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Harris county is a PITA! I live in Austin and they are bad here too. But really as long as your car is not throwing any codes you should pass with no issues. So just poke around for someone in your area who can program out the emissions codes from your computer and you will have nothing to worry about.
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Old Oct 18, 2011 | 04:02 PM
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Lucky... I have to pass the sniffer.
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Old Oct 19, 2011 | 04:07 PM
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Originally Posted by Mavn
http://www.txdps.state.tx.us/vi/insp.../item_insp.asp

I live in Harris county. It says all gasoline powered vehicles are exempt from emissions. Does that mean I'm in the clear?
I dont know where you get that idea but Harris county you have to pass the test NOT exempt from taking it , OBD1 has to pass the sniffer and OBD 2 they just do a scan so OBD 2 can just tune out the code for cats
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