View Single Post
Old 01-13-2021, 12:53 AM   #3
Turdinator
Seņor Member
 
Turdinator's Avatar
 
Join Date: Aug 2012
Drives: 86 GT/'74 TA22 Celica/Kangaroo
Location: Melbourne, Australia
Posts: 1,706
Thanks: 1,107
Thanked 769 Times in 480 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by Ashikabi View Post
Is the Perrin dual or single exit? 2 2.5"pipes is bigger than a single 3, so you would be fine there (assuming dual exit). Otherwise you have to go custom to maintain the 3". To keep the noise in check you'll need a suitcase muffler of some variety.

Sent from my ONEPLUS A5010 using Tapatalk
This.
Area of a 3" circle is 7.07 square inches, area of 2.5" circle is 4.91 square inches. two pipes of 2.5" have a much larger combined cross sectional area than a single 3".

I have a NA setup with JDL catless header, overpipe, ultra quiet front pipe and the Perrin resonated catback all in 2.5". NA should be louder than turbo but 3" should be louder than 2.5". So I would guess it would balance out and be pretty close in terms of volume. Mine is definitely louder than stock but very livable and refined. I am sure with some searching you could get a sound clip of someone with that exact setup.
__________________
1974 TA22 Celica
2013 86 GT
Turdinator is offline   Reply With Quote