Hi flow cats and inspection question
12-07-2010, 08:37 PM
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Hi flow cats and inspection question Does anyone know if high flow cats will pass a sniffer test? Im throwing an 04 LS1 into my 91 fox and will have to get the sniffer test. I hate to get normal cats and dont care to have to swap out the midpipe every year if I can get away with hi flows.
12-07-2010, 09:09 PM
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I don't think they will.
A lot of it can be in the tune and mods setup, if you have all your emissions (AIR/EGR junk) and its tuned to pass then it could be done without cats.
A lot of it can be in the tune and mods setup, if you have all your emissions (AIR/EGR junk) and its tuned to pass then it could be done without cats.
12-07-2010, 09:19 PM
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mine passed inspection with high flow cats, not sure if they do a sniffer test in dallas? but if they do it passed...and failed for HIDs and tint...fukin delarships
12-07-2010, 11:47 PM
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magnaflow
ya i got the car with no cats and it was way to raspy and loud for my taste...the hi flow cats took the rasp away completely and lowered the volume down a bit, but still gets loud when u get on it
ya i got the car with no cats and it was way to raspy and loud for my taste...the hi flow cats took the rasp away completely and lowered the volume down a bit, but still gets loud when u get on it
12-08-2010, 07:54 AM
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I'd do a Ben Franklin inspection if I had the hook up lol. I hated having to swap out midpipes on my old mustang every year. If the hi flows cut out the rasp though I'll keep them in and maybe just do cutouts.
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12-08-2010, 12:11 PM
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When I had my Trans/Am inspected in October the damn dealership failed it because of the cats. Said the high flow cats are too free flowing for their stinkin' machines.
So I took it to a regular gas station inspection station, and they passed it with no problem.
The inspector asked me if I had cats on the car I said yes, high flows. He said that's fine, and proceeded to scan the car for codes.. it passed with flying colors.
So I took it to a regular gas station inspection station, and they passed it with no problem.
The inspector asked me if I had cats on the car I said yes, high flows. He said that's fine, and proceeded to scan the car for codes.. it passed with flying colors.
12-08-2010, 01:46 PM
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I have the Kooks 1 3/4 LT's and plan on getting the magnaflow catback. It seems to be the only exhaust that sounds good with an LS1 that is ready to bolt up to the mustang. Hopefully I can get away with getting the midpipe made pretty cheap.
Chef, thats what im worried about, the cats being too free flowing. Although my old 5.0 would have passed without cats except the visual got failed. Im assuming these engines are a little cleaner running so hopefully the high flows wont be an issue.
Chef, thats what im worried about, the cats being too free flowing. Although my old 5.0 would have passed without cats except the visual got failed. Im assuming these engines are a little cleaner running so hopefully the high flows wont be an issue.
12-08-2010, 04:03 PM
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I have the Kooks 1 3/4 LT's and plan on getting the magnaflow catback. It seems to be the only exhaust that sounds good with an LS1 that is ready to bolt up to the mustang. Hopefully I can get away with getting the midpipe made pretty cheap.
Chef, thats what im worried about, the cats being too free flowing. Although my old 5.0 would have passed without cats except the visual got failed. Im assuming these engines are a little cleaner running so hopefully the high flows wont be an issue.
Chef, thats what im worried about, the cats being too free flowing. Although my old 5.0 would have passed without cats except the visual got failed. Im assuming these engines are a little cleaner running so hopefully the high flows wont be an issue.
When you take it for inspection make sure to take it to a stand alone station, and not a dealership. Their expecting factory spec cars, but like you and I, many of car enthusiasts mod their cars rather quickly... typically starting with the exhaust system. Those damn factory cats are ****, extra lb's. and useless
Good Luck
12-08-2010, 04:06 PM
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12-08-2010, 04:29 PM
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Even with HFC's its a possibility that you'll throw a code. My inspection isn't due until October 2011, but I'm about to have a cam/converter installed thus with that a tune. The tune will eliminate the code entirely, but it's just so annoying to see that little light shining back at me on my gauge cluster
When you take it for inspection make sure to take it to a stand alone station, and not a dealership. Their expecting factory spec cars, but like you and I, many of car enthusiasts mod their cars rather quickly... typically starting with the exhaust system. Those damn factory cats are ****, extra lb's. and useless
Good Luck
When you take it for inspection make sure to take it to a stand alone station, and not a dealership. Their expecting factory spec cars, but like you and I, many of car enthusiasts mod their cars rather quickly... typically starting with the exhaust system. Those damn factory cats are ****, extra lb's. and useless
Good Luck
The place I normally get inspection doesnt look for much else beside the basics, tires, lights, signals, and horn. So im hoping ill pass.
12-08-2010, 04:38 PM
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Wow they have real exhaust checks in Austin these days? I lived there 2000-04 and used to get my Firebird inspected there... it was cheaper than Houston which had just moved to the OBDII emissions test with the safety inspection. I didn't mind paying like $15-$20 less a year or whatever it was. My car has cats after the headers and I haven't had any problems here... I wonder if it would actually pass a real exhaust test.
12-08-2010, 05:59 PM
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Originally Posted by HAZ-Matt
Wow they have real exhaust checks in Austin these days? I lived there 2000-04 and used to get my Firebird inspected there... it was cheaper than Houston which had just moved to the OBDII emissions test with the safety inspection. I didn't mind paying like $15-$20 less a year or whatever it was. My car has cats after the headers and I haven't had any problems here... I wonder if it would actually pass a real exhaust test.
Originally Posted by ChefTA
what is a Benjamin Franklin Inspection??
12-08-2010, 06:05 PM
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Cool, I figured as much is was just a little worried about the high flows. You know, I did forget to mention I just finished installing a TSP228r cam. I hope that doesnt effect emmisions too much.
Travis, Williamson, and Hays all do emmisions now.
Lets just say your inspection will cost $100 more or less.
Travis, Williamson, and Hays all do emmisions now.
Lets just say your inspection will cost $100 more or less.
