Turning Invidia n1 into single - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Devin11498 · 09-09-2018, 11:36 AM

I have the invidia n1 but have been wanting a single exit lately. I was wondering if yall have taken your n1’s to a exhaust shop and converted it into a single? Or what do yall think?

guybo · 09-09-2018, 07:29 PM

Just get a blank flange plate and blank off the side if the Y pipe you don't want to use anymore. If it's like the Spec D (as I understand the Spec D is a blatant rip off) then the piping is no less than 2.5" all the way through so it won't choke off power. I even wonder if the blanked off piece of pipe might work as a helmholtz at some frequency?

JimmyMac · 09-10-2018, 03:00 AM

Actually, I think I did this once just to try it. I bought or had a metal plate and cut it out to shape. Then drilled the holes for the bolts to fit through. I used a gasket to seal the plate to the flange. Honestly, I don't remember how it turned out. I don't remember if it was louder or quieter or if it felt funny driving it around (power wise), but I do know that it didn't last long. Maybe a day or two. It would be easy enough to try out. I suggest doing that before spending money having it permanently done.

Timmy_Jones · 09-10-2018, 09:47 AM

You will want to take it to someone who can weld a plate on the Y pipe, or wherever it splits. Shouldn't be too hard. Car will lose a tiny bit of weight...but may also lose some aesthetics from the back! Keep the dual!

Clipdat · 09-10-2018, 01:40 PM

Quote:

Originally Posted by Timmy_Jones

Keep the dual!

Agreed. Keep it as is or get a proper single exit exhaust.

09-09-2018, 11:36 AM	#1
Devin11498 Member Join Date: Oct 2017 Drives: 2013 Subaru Brz Limited Location: South Carolina Posts: 38 Thanks: 23 Thanked 8 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Turning Invidia n1 into single I have the invidia n1 but have been wanting a single exit lately. I was wondering if yall have taken your n1’s to a exhaust shop and converted it into a single? Or what do yall think?

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09-09-2018, 07:29 PM	#2
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Just get a blank flange plate and blank off the side if the Y pipe you don't want to use anymore. If it's like the Spec D (as I understand the Spec D is a blatant rip off) then the piping is no less than 2.5" all the way through so it won't choke off power. I even wonder if the blanked off piece of pipe might work as a helmholtz at some frequency?

09-10-2018, 03:00 AM	#3
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)	Actually, I think I did this once just to try it. I bought or had a metal plate and cut it out to shape. Then drilled the holes for the bolts to fit through. I used a gasket to seal the plate to the flange. Honestly, I don't remember how it turned out. I don't remember if it was louder or quieter or if it felt funny driving it around (power wise), but I do know that it didn't last long. Maybe a day or two. It would be easy enough to try out. I suggest doing that before spending money having it permanently done.

09-10-2018, 09:47 AM	#4
Timmy_Jones Spun Join Date: Mar 2013 Drives: 17' Focus RS Location: New England Posts: 1,179 Thanks: 396 Thanked 400 Times in 273 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	You will want to take it to someone who can weld a plate on the Y pipe, or wherever it splits. Shouldn't be too hard. Car will lose a tiny bit of weight...but may also lose some aesthetics from the back! Keep the dual!

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