Question on Invidia N1 exhaust silencers - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mid_life_crisis · 02-27-2015, 11:27 AM

Obviously there are numerous references to this exhaust, even a review or two (or three...) but I've yet to see anyone describe the difference in sound with and without the silencers installed. I'm also curious if anyone with too much time and money on their hands has ever done a dyno test to see the difference.

JimmyMac · 02-27-2015, 10:10 PM

I wish I could help but mine never fit. I heard mention of some that hammer theirs in place, but I wasn't gonna try it. I also tried to buy aftermarket ones to fit, but that didn't go as planned. If it's like past silencers that I've used in other cars, it will tone down the exhaust and drone quite a bit.

AlphaFRS · 02-28-2015, 09:16 PM

When I first installed my N1 I actually ran the first day without and the second with the silencers. The silencers greatly reduce the drone. I think the car sounds slightly louder than stock with them on and preferred the sound without them. Hope this helps!

fatalelement · 02-28-2015, 09:36 PM

Quote:

Originally Posted by mid_life_crisis

I'm also curious if anyone with too much time and money on their hands has ever done a dyno test to see the difference.

Since even a full catback will never actually give you more than 10 hp (and that's about the highest, most ridiculous claim I've seen, most are low single digit), I doubt you'd lose anything at all. If you still have cats in that's really gonna be your limiting factor. Just a sound preference at that point.

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mid_life_crisis · 03-02-2015, 11:32 AM

Quote:

Originally Posted by fatalelement

Since even a full catback will never actually give you more than 10 hp (and that's about the highest, most ridiculous claim I've seen, most are low single digit), I doubt you'd lose anything at all. If you still have cats in that's really gonna be your limiting factor. Just a sound preference at that point.

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That makes perfect sense and now that I consider it, I already knew that so it was kind of stupid question. I suppose I was really thinking about a system that was modified in other ways such that the catback would become the choke point in the exhaust.

fatalelement · 03-02-2015, 11:52 AM

Quote:

Originally Posted by mid_life_crisis

That makes perfect sense and now that I consider it, I already knew that so it was kind of stupid question. I suppose I was really thinking about a system that was modified in other ways such that the catback would become the choke point in the exhaust.

I'd guess you'd end up with some sort of minimal loss - probably the reverse of what an increased diameter would give you. If I had to guess, and I'm not an automotive engineer or anything, it'd be pretty small. I'd be interested to know just out of personal curiosity. When my HKS comes this week, I'll be running the silencer unless it's the weekend. I want my neighbors to like me!

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02-27-2015, 11:27 AM	#1
mid_life_crisis Senior Member Join Date: May 2013 Drives: FR-S 10 #103 AT Location: NC Posts: 1,519 Thanks: 101 Thanked 599 Times in 347 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Question on Invidia N1 exhaust silencers Obviously there are numerous references to this exhaust, even a review or two (or three...) but I've yet to see anyone describe the difference in sound with and without the silencers installed. I'm also curious if anyone with too much time and money on their hands has ever done a dyno test to see the difference. __________________ Necessity may be the mother of Invention but Desperation is quite often the father. “Sex is like Bridge. If you don't have a good partner, you'd better have a good hand.” - Mae West Papa said, "son there's a lot of evil temptations out there. Best to try 'em all so you know which ones to avoid." Last edited by mid_life_crisis; 02-27-2015 at 02:33 PM.

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02-27-2015, 10:10 PM	#2
JimmyMac Senior Member Join Date: Aug 2012 Drives: 2013 FR-S, 2016 Miata Club Location: NC Posts: 785 Thanks: 183 Thanked 258 Times in 171 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	I wish I could help but mine never fit. I heard mention of some that hammer theirs in place, but I wasn't gonna try it. I also tried to buy aftermarket ones to fit, but that didn't go as planned. If it's like past silencers that I've used in other cars, it will tone down the exhaust and drone quite a bit.

02-28-2015, 09:16 PM	#3
AlphaFRS Junior Member Join Date: Feb 2015 Drives: 2013 Raven FRS Location: Alpharetta, GA Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	When I first installed my N1 I actually ran the first day without and the second with the silencers. The silencers greatly reduce the drone. I think the car sounds slightly louder than stock with them on and preferred the sound without them. Hope this helps!

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