Exhaust question ...
but here are some flow number i do know for certain mufflers
3 in.dynomax bullets and ultraflows, magnaflows 2200 cfm
3 in. crossflow dynomax, magnaflow mufflers 1100 cfm.
3 in. crossflow hooker aero-chamber (the one in the hooker cat-back) 900 cfm.
3 in. flowmaster 80 series crossflow 350 cfm.
http://www.ls1.com/forums/showthread...ferrerid=15767

