DMH Ecutout GP
just not sure what size the stock y-pipe is .... anyone know?
Thread Starter
Registered User
Joined: May 2000
Posts: 42
From: Amelia, Ohio
3" Ecutout's are the size 99% of Fbodies run on stock or aftermarket cat backs.
Dave88LX My opinion on the dual or single would be single. A single is easier to install because there is a perfect place for it. The duals have been done on the 4th gens but I havent seen any pics of them installed. Not much room under there from what I can tell looking under my Formula.
Borla style ecutouts are for Borla cat backs only. They have the 3" pipe but the flange bolt circle is bigger than a normal 3" flange therefore they will not interchange. If you dont have the Borla cat back you would get the 3" ecutout. The 3" ecutout will bolt to all 3" dump pipes including Flowtech, Headman, Summit, and Jegs brands.
As of noon Friday the 16th there are 8 confirmed orders.
Borla - 3
3" - 5
Dave88LX My opinion on the dual or single would be single. A single is easier to install because there is a perfect place for it. The duals have been done on the 4th gens but I havent seen any pics of them installed. Not much room under there from what I can tell looking under my Formula.
Borla style ecutouts are for Borla cat backs only. They have the 3" pipe but the flange bolt circle is bigger than a normal 3" flange therefore they will not interchange. If you dont have the Borla cat back you would get the 3" ecutout. The 3" ecutout will bolt to all 3" dump pipes including Flowtech, Headman, Summit, and Jegs brands.
As of noon Friday the 16th there are 8 confirmed orders.
Borla - 3
3" - 5
Registered User
Joined: Oct 2002
Posts: 2,168
From: AACO, MD
Dave thanks for the response.
Would the fact that I have to get a custom Y-pipe done up for my Long-Tubes anyways change that at all? If I were to put just a single at the Y...that would only be a 3" also then right?
Would the fact that I have to get a custom Y-pipe done up for my Long-Tubes anyways change that at all? If I were to put just a single at the Y...that would only be a 3" also then right?
Thread Starter
Registered User
Joined: May 2000
Posts: 42
From: Amelia, Ohio
I know it can and has been done and if you have someone who can fab the Y pipe to get good ground clearence then it would be fine. Just didnt want you to spend the extra $$ on a set if you could get away with a single.
Registered User
Joined: Oct 2002
Posts: 2,168
From: AACO, MD
Originally posted by Dave Hacker
I know it can and has been done and if you have someone who can fab the Y pipe to get good ground clearence then it would be fine. Just didnt want you to spend the extra $$ on a set if you could get away with a single.
I know it can and has been done and if you have someone who can fab the Y pipe to get good ground clearence then it would be fine. Just didnt want you to spend the extra $$ on a set if you could get away with a single.
This way, when you open the cutouts, the exhuast goes STRAIGHT out...I don't know how this will affect flow as it would normally be when the cutout is closed though?
I do appreciate you trying to save money though!
Pardon the crude diagram
http://paradox.shacknet.nu/dave88lx/...pe-diagram.jpg
