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2005 Nissan Frontier Nismo Exhaust - Project Nismo Frontier

Part 8: Exhaust Upgrades
By Robin Stover
Photography by Robin Stover
2005 Nissan Frontier Nismo Passenger Side View
1. Here, the author shows... 
   
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2005 Nissan Frontier Nismo Passenger Side View
1. Here, the author shows off the Nismo's uncapped power near Johnson Valley, California.
2005 Nissan Frontier Nismo Rear View
2. This was the first time... 
   
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2005 Nissan Frontier Nismo Rear View
2. This was the first time we dyno-tested our Frontier on the 33-inch tires. We were curious to see how much the heavier tires and wheels affected our power levels.
2005 Nissan Frontier Nismo Headers
3. The JBA Cat4ward header... 
   
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2005 Nissan Frontier Nismo Headers
3. The JBA Cat4ward header system for '05-and-later Frontier pickups is available with ceramic coatings that are simply beautiful. We also like that they are 50-state smog-legal and that they are mandrel-bent from 409 stainless steel.
2005 Nissan Frontier Nismo Compare
4. Here you can see the differences... 
   
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2005 Nissan Frontier Nismo Compare
4. Here you can see the differences between the OE exhaust manifold and the JBA headers. Notice how the factory units combine two shorter tubes into one, versus the JBA headers, which use a collector flange and (almost) equal-length tubes for each cylinder. This helps smooth out exhaust flow and subsequent performance.
2005 Nissan Frontier Nismo Mating Flange
5. Take a look at the back... 
   
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2005 Nissan Frontier Nismo Mating Flange
5. Take a look at the back of the 3/8-inch-thick mating flange. These flanges are laser cut from one piece of 409 stainless steel sheet. Once the tubes are welded in place, each flange is finish-ground to ensure a perfect leak-free fit.
2005 Nissan Frontier Nismo Measure Flange
6. The collector flange features... 
   
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2005 Nissan Frontier Nismo Measure Flange
6. The collector flange features a 2 1/4-inch outlet, plenty big for a 4.0L V-6's output.
2005 Nissan Frontier Nismo Exhaust
7. This is the JBA after-cat... 
   
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2005 Nissan Frontier Nismo Exhaust
7. This is the JBA after-cat exhaust system designed for the '05-and-up Nissan Frontier with a V-6 engine. The system includes all necessary mounting hardware and is designed to be easy to install by end users. We like that it includes a 3.5-inch stainless steel tip and a high-flowing Y-pipe. The system is mandrel-bent from 2-inch stainless steel, or aluminized steel for the budget-minded.

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