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I don't have a Dinan intake however, I do have a GruppeM cf intake & had an aFe dry filter prior. While the aFe was louder than stock, it wasn't much louder & couldn't tell a performance difference. However, w/the GruppeM not only was it noticeably louder at WOT, I can honestly say I felt a difference in performance starting around 3.5k - 4k all the way to redline.
- Jimmy
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'13 E70 S63B44A
'17 95B GTS
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