You will see a noticeable power increase after putting the Ultraflows on.
The Hooker Max Flows are almost the exact same style of muffler as the Dynomax Ultraflow and will perform the same.
The Hooker Aerochamber is a little quieter and more restrictive than the Ultraflow or Max Flow, but performs way better than the Super Turbo.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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