Invidia N1 air flow not even - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

I like the tuna here · 05-05-2015, 04:01 AM

So I just installed the invidia n1 and I noticed that the right exit had almost double amount of airflow compared to the left exit. There is as air coming out of the left side but it was cold/warm and the right was hot and smoking. After driving around for awhile I stopped and checked and still left side was cold no smoke (should be smoking the first couple hundred miles right?) and right side was hot and smokey. I checked all the connections and found no leak. Is something stuck in the left pipe? Is this normal? What should I do?

gatorbushmen · 05-05-2015, 06:53 AM

It's completely normal. It happened to me when I had a Greddy Evo 3. The air will flow through the path of least resistance. That's why I switched over to a single exit exhaust.

vividracing · 05-05-2015, 12:19 PM

I have the N1 and I've never noticed this, not that I'm saying it doesn't happen just never thought about it.

Logic would tell me that there's nothing wrong with the exhaust doing this, as long as the exhaust gets out without blockage.

-RyanG

Alott53 · 05-05-2015, 02:32 PM

Have the N1 and this happens to me as well.

I like the tuna here · 05-05-2015, 02:58 PM

Quote:

Originally Posted by gatorbushmen

It's completely normal. It happened to me when I had a Greddy Evo 3. The air will flow through the path of least resistance. That's why I switched over to a single exit exhaust.

I never understood why people got single exit on these cars because it looks kinda awkward and I would think that two is better than one but I understand now. Thanks for clearing this up.

I like the tuna here · 05-05-2015, 03:13 PM

Quote:

Originally Posted by vividracing

I have the N1 and I've never noticed this, not that I'm saying it doesn't happen just never thought about it.

Logic would tell me that there's nothing wrong with the exhaust doing this, as long as the exhaust gets out without blockage.

-RyanG

How do you like the n1 so far? Do you get used to the loudness and does it quiet down after break in? I love the sound but it's kinda loud

vividracing · 05-05-2015, 03:17 PM

Quote:

Originally Posted by I like the tuna here

How do you like the n1 so far? Do you get used to the loudness and does it quiet down after break in? I love the sound but it's kinda loud

I liked it with the stock headers but I don't think it was loud enough haha.

I got the Open Flash Headers and OFT and it's louder and deeper and the boxer rumble. It sounds soo good, cold starting makes it sound beastly.

AgentFT86 · 05-05-2015, 03:50 PM

Quote:

Originally Posted by I like the tuna here

How do you like the n1 so far? Do you get used to the loudness and does it quiet down after break in? I love the sound but it's kinda loud

It silences down significantly over the first 1k miles. The drone in mine almost just dropped off completely.

Jolaessss · 05-05-2015, 04:18 PM

Quote:

Originally Posted by AgentFT86

It silences down significantly over the first 1k miles. The drone in mine almost just dropped off completely.

I'm sorry did you say your drone has almost dropped off completely!? You must teach me your ways! lol mine drones quite a lot, especially on the freeway.

AgentFT86 · 05-06-2015, 02:18 PM

Quote:

Originally Posted by Jolaessss

I'm sorry did you say your drone has almost dropped off completely!? You must teach me your ways! lol mine drones quite a lot, especially on the freeway.

It went from unbearable, to pretty tolerable. On the freeway, it was insane, but now I can only hear it when I'm coasting at like 3k, if I am slightly pressing gas it is ALMOST not noticeable/annoying haha.

OmarYasin · 05-06-2015, 03:33 PM

I have this same exhaust with straight pipe only noticed more smoke from one side on cold starts after that both sides equal

05-05-2015, 04:01 AM	#1
I like the tuna here Junior Member Join Date: Mar 2015 Drives: Subaru BRZ Location: Riverside Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s)	Invidia N1 air flow not even So I just installed the invidia n1 and I noticed that the right exit had almost double amount of airflow compared to the left exit. There is as air coming out of the left side but it was cold/warm and the right was hot and smoking. After driving around for awhile I stopped and checked and still left side was cold no smoke (should be smoking the first couple hundred miles right?) and right side was hot and smokey. I checked all the connections and found no leak. Is something stuck in the left pipe? Is this normal? What should I do?

05-05-2015, 06:53 AM	#2
gatorbushmen Amateur Drifter Join Date: Apr 2013 Drives: '13 FRS Location: Saint Augustine Posts: 355 Thanks: 220 Thanked 222 Times in 72 Posts Mentioned: 6 Post(s)	It's completely normal. It happened to me when I had a Greddy Evo 3. The air will flow through the path of least resistance. That's why I switched over to a single exit exhaust. __________________ i like 2 drift https://www.youtube.com/channel/UCvo...pU-TkCZZcTh61g

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05-05-2015, 12:19 PM	#3
vividracing Join Date: May 2012 Drives: 2013 Scion FR-S Location: Gilbert, Arizona Posts: 2,593 Thanks: 491 Thanked 1,065 Times in 617 Posts Mentioned: 49 Post(s)	I have the N1 and I've never noticed this, not that I'm saying it doesn't happen just never thought about it. Logic would tell me that there's nothing wrong with the exhaust doing this, as long as the exhaust gets out without blockage. -RyanG

05-05-2015, 02:32 PM	#4
Alott53 Member Join Date: Mar 2015 Drives: Whiteout 2014 FRS AT Location: North Carolina Posts: 52 Thanks: 32 Thanked 14 Times in 8 Posts Mentioned: 0 Post(s)	Have the N1 and this happens to me as well.

05-06-2015, 03:33 PM	#11
OmarYasin Senior Member Join Date: Oct 2013 Drives: 2013 Scion FR-S Location: Hayward Hills, CA Posts: 759 Thanks: 110 Thanked 154 Times in 110 Posts Mentioned: 30 Post(s)	I have this same exhaust with straight pipe only noticed more smoke from one side on cold starts after that both sides equal

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