BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) - View Single Post - Akrapovic slip-on valve open vs. closed / N54 vs. N55 mid

sirbuler · 08-19-2017, 08:15 PM

Hi folks, I am about to pop out the plate of my Akra slip on. I feel the sound with the plat is too muffled!

I also have installed the MadDad mids....but it is still too muffled..

Is there any good video where I can hear it in full open mode while driving?
Any issue with increased drone?

08-19-2017, 08:15 PM	#50
sirbuler Enlisted Member 35 Rep 30 Posts Drives: 1M Join Date: Oct 2016 Location: Los Angeles iTrader: (0)	Hi folks, I am about to pop out the plate of my Akra slip on. I feel the sound with the plat is too muffled! I also have installed the MadDad mids....but it is still too muffled.. Is there any good video where I can hear it in full open mode while driving? Any issue with increased drone? __________________ current: 911 with manual transmission 1M - Sold M2 - Sold 135i cabrio 6spd - Sold 991.1 PDK Sold
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