NHRA ADDS 75 LBS TO PM NITROUS CARS | Competition Plus
The NHRA's tech department has made adjustments to the nitrous combination within Pro Modified, adding 75 pounds. This is a second adjustment to the parity since NHRA brought the supercharger overdrive down from 16.5-percent to 14.55, and the turbochargers from 36 to 33 pounds of boost back in July.
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