I'm pretty sure Herb McCandless Jr., was running a heads up class at Piedmont 5-6 years ago that used exhaust restriction and intake restriction. When I talked to him on the phone about it he said the cars were running right around 7.40s and had decent participation .
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Originally Posted by Michael Beard
Funny, I was discussing that with some circle track racers at Indy... some series have restricted the exhaust, but didn't sound like anyone's limited both the intake *and* the exhaust together.
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