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      06-25-2024, 08:50 AM   #1
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Drives: E92 M3 Comp
Join Date: Jul 2012
Location: Houston, TX

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Quad resonated vs. HFC x pipe

Hi all,

I currently have an Macht Schnell catless x pipe (it’s dual resonated) paired with an active autowerke gen 2 axleback.

The exhaust sounds great, but it’s pretty bassy from 1-1.5k rpm. The bass translates into NVH into the cabin which I would like to remove.

I’m currently debating adding two resonators (Vibrant 1792, making my x pipe quad resonated), or adding 2 HFCs in the secondary position (GESI 300 cell GSPORT).

I’ve tried comparing through videos but it’s pretty much impossible to compare sound volumes through video, and I’ve yet to find someone who’s had or heard both. Any recommendations on which option would be better to reduce/eliminate drone, quiet down the system a bit and which would eliminate the low end bassiness?

Thanks!
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