magnaflow high flow cat - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 06-20-2007, 06:55 PM   #1
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got my new cat install number 54306 high flow stainless cat so far the sound is a bit louder but not to much was expecting it its half the size of my stock one l will post a video of the sound
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Old 06-20-2007, 09:09 PM   #2
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i have heard (not to sure how true it is).. that Magnaflow '* have a breaking period, I know when i installed mine the differance was increadable
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Old 06-21-2007, 12:16 AM   #3
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I have a mangaflow cat, resonator, and muffler. All were installed at different times. My exhaust sound has changed or 'matured' over time.
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Old 06-21-2007, 12:22 AM   #4
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Through my "luxury" Olds exhaust, I heard a bit more of a rumble when I did the swap. Nothing major, but there if you pay attention. Now, I just notice how much harder it pulls!
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