Expected exhaust roar in RPM ranges with aftermarket

bravekido · 05-24-2018, 06:09 PM

What do you guys observe with your aftermarket exhausts?
I just installed FI and with closed valves I’m hearing:
1K rpm - very quiet
1500-2000 rpm - loud
3000 above rpm - soft

I like the quietness with closed valves. That’s the whole purpose of valvetronic exhausts so you can quote them when you want. I’m trying to figure out why it’s loud around 1800 rpm with closed valves.

ByronUT_M6 · 05-25-2018, 08:03 AM

Most likely just exhaust drone your experiencing from 1500-2000 pretty much every aftermarket exhaust is going to do this even with closed valves. I get it as well with just a muffler delete.

05-24-2018, 06:09 PM	#1
bravekido New Member 8 Rep 20 Posts Drives: 2015 M6 GC Join Date: Dec 2015 Location: USA iTrader: (0)	Expected exhaust roar in RPM ranges with aftermarket What do you guys observe with your aftermarket exhausts? I just installed FI and with closed valves I’m hearing: 1K rpm - very quiet 1500-2000 rpm - loud 3000 above rpm - soft I like the quietness with closed valves. That’s the whole purpose of valvetronic exhausts so you can quote them when you want. I’m trying to figure out why it’s loud around 1800 rpm with closed valves.
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05-25-2018, 08:03 AM	#2
ByronUT_M6 Private 13 Rep 84 Posts Drives: '13 Sakhir Orange M6 Join Date: Jun 2017 Location: Utah iTrader: (0)	Most likely just exhaust drone your experiencing from 1500-2000 pretty much every aftermarket exhaust is going to do this even with closed valves. I get it as well with just a muffler delete.
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