I pick it up from time to time and today while studying Dyno Data noticed that while the JBA Headers had essentially the same Average and Peak Figures for TQ and HP as numerous top performing headers, they were severely ,,,, NO make that incomprehensibly lacking in low end grunt being off by what has to be felt like dragging an engine block with a chain on the Butt-O-Meter. Down about 100 lb-ft and 60Hp at 3,000 rpm on 390 Stroker to the other headers.
So then of course that gets me wondering, if they are off so bad on low end, it should kill the average TQ/HP and where/how in hell do they make that average up to get their good Avg Figures?
Time for more study and conjecture....