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06-30-2023, 05:49 AM | #2 |
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Drives: Z4 M, X5, GX460
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Garage List F15 X5 xDrive35i [8.75]
E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.24] |
Only worth it if you’re getting rid of primaries. If you’re keeping factory headers, then you can even get rid of the secondary cat entirely.
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08-30-2023, 08:56 PM | #3 |
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After screwing up my exhaust system I rectified it by adding high flow secondary cats and a resonator.
After having it on the car for about two years I heard some sound’s yesterday that I have never heard before. Which reminds me that I need to get a sound clip or two. |
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08-30-2023, 09:50 PM | #4 |
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I have no back box and no secondary cats but I do have a magnaflow muffler. The combo sounds perfect, not too loud, no drone and it does nice little pops like my m54 5spd use to. Wouldn't change a thing, even my wife likes it...which is saying a lot.
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09-10-2023, 11:43 AM | #5 | |
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Quote:
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09-11-2023, 01:57 PM | #6 |
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I have a 3.0si. With the secondary high flow cats resonator my car now sounds like I wanted it to. It gurgles, with subtle pops, and crackles along the rev range.
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09-11-2023, 04:31 PM | #7 |
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09-12-2023, 12:55 PM | #8 |
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I took out the factory exhaust system (large and heavy) and added
1) Schmiedmann Hi Flow cats *these help the overall sound to a certain extent. I was surprised when they arrived and found that they are well made with very nice welds and a high polish. 2) MagnaFlow 4x9 Resonator part #11378 *it’s very small and very cheap with very good quality! 3) Different Trends Exhaust Tips (part # DT-24017AC) t * These are huge but they do fit within the factory exhaust tip’s cutout. They are double-walled with high polish and measure 2.25” and 3.5” out |
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solo the lad7.50 DiscoJax7.50 |
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