Plenum Cylinder Airflow Comparison
RJC Power Plate Flow Chart’s
Plenum flow charts comparison each cylinder to average of all cylinders for that plenum.
Stock Plenum
1 -40% 2 -81%
3 +24% 4 -33%
5 +68% 6 +63%
Flow Range; 149%
Stock plenum with AD Power Plate-S
1 -5% 2 -2%
3 +5% 4 +4%
5 -5% 6 +2%
Flow Range; 10%
Kenny Bell 70mm Plenum
1 -44% 2 -52%
3 +32% 4 -8%
5 +30% 6 +40%
Flow Range; 96%
Precision 70mm Plenum
1 -56% 2 -59%
3 +36% 4 -2%
5 +27% 6 +36%
Flow Range; 95%
Kenny Bell Plenum with AD Power Plate-K
1 +5% 2 -5%
3 +1% 4 0%
5 -1% 6 +1%
Flow Range; 10%
Precision Plenum with AD Power Plate-P
1 -3% 2 +2%
3 -3% 4 +2%
5 +2% 6 -2%
Flow Range; 5%
Hemco 70mm Plenum
1 -20% 2 -21%
3 +21% 4 -13%
5 -10% 6 +14%
Flow Range; 42%
Hemco Style Plate (Just for kicks)
1 -35% 2 -29%
3 +23% 4 +24%
5 -2% 6 +19%
Flow Range; 59%
