The Acura RSX Type-S is a very popular car in the United States, especially in the tuner market. Economic, fun and small this car has its place both on the streets, and on this day, in our lab for testing.
With new NGK Iridium factory spec plugs installed we begin testing. The engine pulled 223 horsepower at 7700 rpm and 165 Ft-Lb of torque 6200 rpm. Stock acceleration from 40 mph to 80 mph took 7.21 seconds over .12 miles and fuel consumption was 913.42 cc.
New Pulstar BE-1 plugs gapped to the factory gap of .044" the engine power output went up to 231 horsepower at 7800 rpm and 167 Ft-Lb at 6200 rpm. Acceleration with Pulstar plugs installed dropped to 6.9 seconds over the same .12 miles and fuel consumption dropped to 882.76 cc.
Comparing the results gave us 8 more peak HP(3.59%), 2 more pounds of peak torque(1.21%), a reduction in acceleration time of .31 seconds(4.3%) and an increase in fuel economy by 3.36%.
If you analyze the results above you'll notice something, while we made 2 more pounds of torque at the peak there are other parts of the engine power band where we improved torque quite a bit more than that in all other areas. The average torque with stock plugs was 153 Ft-Lb but with the Pulstar plugs that number went up to 159 Ft-Lb, a 6 pound difference(3.92%). That number is significant considering the engine spends only a fraction of its time at peak torque and since peak torque is so high in the power band on this engine you probably don't even get there except on your way past it to the redline.
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