High flow cats with Akrapovic (short vid content)

JeST · 07-03-2015, 06:02 PM

m5 guy · 07-03-2015, 07:00 PM

I like how you can hear the spool even though you still have catted downpipes. How loud is everything?

JeST · 07-03-2015, 07:08 PM

With the valve closed (below 3k rpm) it's similar to oem with a slightly louder turbo spool. With the valves open has a decent v8 grunt mixed in with the same turbo spool. In the video Cattivo and I wired the valves permanently opened already.

My sound gauge is probably off though since I've been running straight pipes for about a month now. So anything with a muffler is going to sound quiet to me now, lol.

Cattivo · 07-03-2015, 07:53 PM

Sounds a hell of a lot better in person...amazing spool sound. I highly recommend the Akra

07-03-2015, 06:02 PM	#1
JeST Second Lieutenant 61 Rep 273 Posts Drives: X5M Join Date: Jul 2013 Location: NYC iTrader: (2)	High flow cats with Akrapovic (short vid content) __________________ '08 IB / Extended Fox Red 6spd E92 '94 Red/black TT 6spd Supra '09 328i xDrive E90
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07-03-2015, 07:00 PM	#2
m5 guy Brigadier General 1690 Rep 3,200 Posts Drives: 2020 M5 Comp Join Date: Apr 2012 Location: Hawaii iTrader: (14)	I like how you can hear the spool even though you still have catted downpipes. How loud is everything? __________________ 2020 F90 M5 Comp Oxford Green Metallic II-Aragon JOURNAL 2016 F10 M5 Space Gray-Black SOLD 2012 E70 X5M Monte Carlo Blue-Silverstone SOLD 2001 E46 M3 Oxford Green Metallic II-Cinnamon SOLD
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07-03-2015, 07:08 PM	#3
JeST Second Lieutenant 61 Rep 273 Posts Drives: X5M Join Date: Jul 2013 Location: NYC iTrader: (2)	With the valve closed (below 3k rpm) it's similar to oem with a slightly louder turbo spool. With the valves open has a decent v8 grunt mixed in with the same turbo spool. In the video Cattivo and I wired the valves permanently opened already. My sound gauge is probably off though since I've been running straight pipes for about a month now. So anything with a muffler is going to sound quiet to me now, lol. __________________ '08 IB / Extended Fox Red 6spd E92 '94 Red/black TT 6spd Supra '09 328i xDrive E90
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07-03-2015, 07:53 PM	#4
Cattivo FDNY Engine 55 681 Rep 2,115 Posts Drives: X5M, X5 50i Msport, EscaHoe Join Date: Jul 2014 Location: The Concrete Jungle iTrader: (1)	Sounds a hell of a lot better in person...amazing spool sound. I highly recommend the Akra
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