Camshafts, idle quality, driveability and LSA-REAL WORLD EXP and OPINION
This is all I can come up with for the thumpr
Intake Duration at 050 inch Lift: 235
Exhaust Duration at 050 inch Lift: 249
Duration at 050 inch Lift: 235 int./249 exh.
Advertised Intake Duration: 287
Advertised Exhaust Duration: 304