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Discussing Mac offroad h-pipe with cats? in the V6 Mustangs Forum. Hey im having a muffler shop here weld on obd2 cats (thats what we have ... Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free! |
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February 20th, 2007, 12:14 AM
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#1 |
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Enthusiast
1996 Mustang GT
11.2@122.36
Join Date: Aug 2006
Location: North Carolina
Posts: 530
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Mac offroad h-pipe with cats? |
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February 20th, 2007, 12:33 AM
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#2 |
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Regular
Join Date: Jan 2007
Posts: 93
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Here is an excerpt from the EPA law concerning cats: Generally, there are only 3 situations when you can install an aftermarket converter. They are: (1) if the converter is missing from the vehicle when brought in for exhaust system repair; or (2) if a State or local inspection program has determined the existing converter has been lead poisoned, damaged, or otherwise needs replacement; or (3) if the vehicle is more than 5 years old or has more than 50,000 miles* (8 years/80,000 miles for 1995 and newer vehicles) and a legitimate need for replacement has been established and appropriately documented (e.g., a plugged converter or unrepairable exhaust leaks). Any other converter replacement must be with a 'certified' or new original equipment (OE) or equivalent converter. Besides installing aftermarket converters only in the 3 situations outlined in response to question (6), other requirements and restrictions also apply. These include completely documenting the need for converter replacement, properly installing the correct one on the vehicle, and informing the customer of his rights and certain restrictions. Specifically, these requirements are as follows: (1) If the replacement is not required by a State or local program, both customer and installer must sign a statement concerning why the converter was replaced. (Manufacturers either provide such a statement with the converter or have an example in their catalogs.) (2) If the replacement is required by a State or local program, the installer must keep a copy of the statement or order by the program representative. (3) The invoice for replacement must include the customer's name and complete address, and the vehicle's make, model year, and mileage, as well as the reason for replacement. (4) Retain copies of the above invoices and statements for 6 months and the replaced converters for 15 days (converters must be identified or marked as to which customer's car they came from). (5) Install the converter in the same location as the original. (6) Install the same type of converter as the original (oxidation, 3-way, or 3-way-plusoxidation (dual-bed)). This information is sometimes available on the emission tuneup label or from the manufacturer's application catalog. (7) Install the proper converter for the vehicle as determined and specified by the converter manufacturer. There are engine size and vehicle weight limitations which make it inappropriate to install certain converters on certain vehicles. Newer vehicles with On-Board Diagnostic (OBD) systems may not always operate properly with certain aftermarket products. Therefore, the catalog should always be consulted for the correct application. -6- (8) The converter must always be properly connected to any existing air injection components. (9) Install all the other required converters the vehicle would have originally come with unless the converter manufacturer has stated in writing that the aftermarket converter is designed to replace more than one converter. (10) For new aftermarket converters, the installer must fill out the warranty information card supplied by the manufacturer and give it to the vehicle owner or operator. Thats a lot of info, but its the law. Now, what you can do and get away with is a different story... You should be fine as long as the new cats do not cause the MIL to come on.
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February 20th, 2007, 12:50 AM
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#3 |
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Enthusiast
1996 Mustang GT
11.2@122.36
Join Date: Aug 2006
Location: North Carolina
Posts: 530
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February 20th, 2007, 12:54 AM
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#4 |
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SP00LIN V6
2000 Mustang V6
unknown @390
Join Date: Aug 2006
Location: south florida
Posts: 14,619
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__________________
 437rwhp and 402rwtq through a V6 on a stock bottom end 
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February 20th, 2007, 01:00 AM
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#5 |
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Enthusiast
1996 Mustang GT
11.2@122.36
Join Date: Aug 2006
Location: North Carolina
Posts: 530
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February 20th, 2007, 10:51 AM
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#6 |
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Resident MM Ricer
2006 Scion tC
13.9@103/8.9@81
Join Date: Nov 2006
Location: Raleigh/Lenoir, NC
Posts: 9,385
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__________________
 Scion Tc-strup racing header, CAI, Ground Kit, NOS 100shot, Custom suspension, Doc. I 50% STS MM 4 Banger club: Senior Ricer "Horsepower sells cars, torque wins races." -Carroll Shelby Thanks To My Sponsors: Strup Performance |
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February 20th, 2007, 11:32 AM
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#7 |
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The Nice Guy
1999 Ford Mustang V6
14.79 @ 92.15
Join Date: Aug 2005
Location: UGA
Posts: 8,251
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__________________
ModdedAutos 1999 Mustang V6 I used to list my mods here but stopped when I exceeded 255 characters. 
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