Test Vehicle
Test Plugs
Champion RE14MCC5
NGK 4306
NGK 3381
NGK 4998
NGK 2314
Denso ITL16
Pulstar EF-1
Spark Plug Dyno Results
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Sparkplugs.com has received a lot of questions in regards to the performance gains and reliability of newer spark plug
technology. They decided the best way to decide if some of the newer technology is just a gimmick, or if they have some
true performance benefits would be to have them dyno’d. Therefore we took seven different types of spark plugs, sent them
to an independent dyno shop, and thought we’d share the information with you.
The test vehicle was a stock 2005 Dodge Neon SRT-4, provided by Manny Gomez, a member of SRTForums.com (screen
name: hawkable). The test was performed on a Mustang Dyno. We completed three runs for each plug in a cold, warm and
hot state. We then averaged these runs to find the final average horsepower and torque numbers. All results are
based on the vehicle factory-specified gap setting of .050”, except for the Pulstar plug, which had a maximum manufacturer
recommended gap of .045”.
After testing, the Pulstar plug had a horsepower advantage, having both the highest peak horsepower (205.95hp) and the
highest average horsepower (204.04hp). The NGK Iridium IX showed the second highest average horsepower (203.78hp),
and highest average torque (230.27 lb-ft.), however, the NGK Iridium IX also displayed the most reliable and consistent
horsepower figures. The Denso iridium showed the highest peak torque (235.96 lb-ft.), third highest average horsepower
(203.67hp), and second highest peak horsepower (205.51hp) and average torque (229.74 lb-ft.).
All testing performed by Design Craft Fabrication for Sparkplugs.com
(Use the "Spark Plug Dyno Results" summary link on the bottom left to find out how each individual spark plug performed) |
