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I had a race (straight-thru) Dynomax on my 2.4 and later swapped it for a Flowmaster Delta-Flow 40 Series. They are both very loud, but the Dynomax was just brutal...the Flowmaster is noticably mellower at low RPM's. The Flowmaster also has a teeny bit of backpressure which probably helps keep the midrange powerband a bit.
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Chris C.
1973 914 "R" (914-6) | track toy
2009 911 Turbo 6-speed (997.1TT) | street weapon
2021 Tesla Model 3 Performance | daily driver
2001 F150 Supercrew 4x4 | hauler
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