High Flow Catalytic Converters
From Nissan 350Z & 370Z Wiki
Installing high flow catalytic converters on the 350Z can help free up the exhaust flow while still meeting environmental restrictions.
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OEM Catalytic Converters
Weight: 23x2 = 46lbs or 13.5???
Diameter: 51mm (2.0")
There are two catalytic converters (cats for short) on the 350Z and G35. The OEM cats are found between the exhaust manifolds and the Y Pipe (1 per side). Many cars consist of welded in place catalytic converters but Nissan has chosen to simply bolt them in. This provides for easy maintenance, access to the manifolds/engine, and easy replacement or upgrades of the converters. The OEM cats have standard aluminum heat shields.
There is 1 O2 sensor per catalytic converter. These sensors measure the effectiveness of the cats and produce an error code if malfunctions are detected or if the OEM cats are removed. Some people have had success tricking the O2 sensors when removing the OEM catalytic converters either by luck, by using spark plug non-foulers, or by using O2 simulators.
Popular modifications include replacing the OEM cats with Test Pipes or Hi Flow Cats. Some owners even bore out the OEM cats to maintain a stealth modifications.
NOTE: Replacing the OEM cats with test pipes, aftermarket high flow cats, or modifications of any kind to the OEM cats is ILLEGAL!
Aftermarket High Flow Cats
This section compiles a listing of all the available high flow and high performance catalytic converters for the Nissan 350Z and Infiniti G35. As noted in the chart above, these cats will flow almost as much air as test pipes do, yet still help keep the environment clean. As usual, pricing and quality is all over the place.
Central 20
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Crawford Z
Manufacturer: Crawford Notes: Magnaflow converters
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Kinetix
Diameter: inlet: 54mm exit: 57mm Manufacturer: Kinetix Notes: Magnaflow converters, SMOG legal, pass emissions, no CARB #, SLIGHTLY LONGER THAN STOCK and may caust mild fitment issues in some exhausts.
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LaBree
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Mines
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Nismo
Manufacturer: Nismo
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Power Enterprise
Manufacturer: Power Enterprise Notes: 400 Cell, 25% less restrictive
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Random Technology
Diameter: 57mm Manufacturer: Random Technology
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Stillen
Diameter: ??mm Material: ? Manufacturer: Stillen
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Ultimate Racing
Diameter: 60mm Material: 304 stainless steel Manufacturer: Ultimate Racing Notes:
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Helix
Diameter: 60mm Material: 304 stainless steel Manufacturer: Helix Notes: 200 Cell Metal Substrate High Flow Cat with Thermal Shield; Passes California Emissions (sniffer under dynamic load) as tested on stock 2003 350Z & G35
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About Catalytic Converters
Catalytic converters are devices used in the exhaust system to reduce pollution of the environment from unstable hydrocarbons from the emissions. They contain some catalysts (like vanadium or platinum) that neutralize unburnt hydrocarbons into carbon di-oxide and water.
A reaction chamber typically containing a finely divided platinum-iridium catalyst into which exhaust gases from an automotive engine are passed together with excess air so that carbon monoxide and hydrocarbon pollutants are oxidized to carbon dioxide and water.
Source: The American Heritage Dictionary of the English language.
Ceramic Type
- Need content
Metallic Type
- Need content
Converter vs. Test Pipe Flow Chart
Resources
- http://en.wikipedia.org/wiki/Catalytic_converter
- http://auto.howstuffworks.com/catalytic-converter.htm
Categories: Central 20 | Crawford | Kinetix | Labree | Mines | Nismo | Power Enterprise | Random Technology | Stillen | Ultimate Racing | Helix | Parts | Exhaust