Exhaust Size. 2.25" or 2.5"? - EvolutionM - Mitsubishi Lancer and Lancer Evolution Community

Notices

Exhaust Size. 2.25" or 2.5"?

 
Old Nov 2, 2006, 02:40 AM
  #1  
Evolved Member
Thread Starter
 
MITVRX's Avatar
 
Join Date: Jul 2006
Location: Australia
Posts: 1,839
Thanks: 0
Thanked 0 Times in 0 Posts
Exhaust Size. 2.25" or 2.5"? Pictures up!

Hey guys,

So I decided to get a custom catback exhaust. My question is, what size exhaust should I get? 2.25 or 2.5"?

Also, Lukey or Magnaflow exhaust?

Cheers

Last edited by MITVRX; Nov 17, 2006 at 08:32 PM.
MITVRX is offline  
Old Nov 2, 2006, 02:47 AM
  #2  
Evolved Member
 
RalliDew's Avatar
 
Join Date: May 2005
Location: naples,fl
Posts: 644
Thanks: 0
Thanked 0 Times in 0 Posts
im usin a custom 2.5 works great flows nice. no need to go any bigger unless u got turbo but then even still.
RalliDew is offline  
Old Nov 2, 2006, 03:04 AM
  #3  
Evolved Member
Thread Starter
 
MITVRX's Avatar
 
Join Date: Jul 2006
Location: Australia
Posts: 1,839
Thanks: 0
Thanked 0 Times in 0 Posts
Yeah, only want to go 2.5" max..
MITVRX is offline  
Old Nov 2, 2006, 03:06 AM
  #4  
Evolved Member
Thread Starter
 
MITVRX's Avatar
 
Join Date: Jul 2006
Location: Australia
Posts: 1,839
Thanks: 0
Thanked 0 Times in 0 Posts
What size piping should I get?
MITVRX is offline  
Old Nov 2, 2006, 06:28 AM
  #5  
Evolved Member
iTrader: (12)
 
Join Date: Feb 2006
Location: Vancouver
Posts: 1,736
Thanked 0 Times in 0 Posts
for our cars turbo or not 2.5 MAX
k3lv is offline  
Old Nov 2, 2006, 06:58 AM
  #6  
Evolved Member
iTrader: (1)
 
Ralliart50's Avatar
 
Join Date: Feb 2005
Location: Northglenn, CO
Posts: 514
Thanks: 0
Thanked 0 Times in 0 Posts
I went with 2.25" on mine because I have an auto and wanted the extra low end torque that a 2.25" provides over the 2.5". The 2.5" gives better top end though.
Ralliart50 is offline  
Old Nov 2, 2006, 07:07 AM
  #7  
Former Sponsor
iTrader: (133)
 
Join Date: Dec 2003
Location: Anywhere
Posts: 3,123
Thanks: 0
Thanked 0 Times in 0 Posts
I have a 2.5" which is really overkill for the RRM Dp as that looks to be 2.25" OD.

In the upper revs say 4k plus I could tell a difference over stock. The slowness in 3rd gear and 4th gear in these upper ranges seemed to benefit from the larger over stock.

I went with Magnaflow and it was better than the Ebay muffler I had before although still not ideal in my opinion. I think running catless will get you an undesired affect to noise irregardless to what muffler/resonator you are using.
MitsuJoe is offline  
Old Nov 2, 2006, 07:12 AM
  #8  
Newbie
 
MADMAX_76's Avatar
 
Join Date: Sep 2004
Location: Geraldton, Western Australia
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
This Saturday I get a 2.25 inch Cat back system which includes a Berklee straight through performance muffler. I have an auto and will keep the car N/A.
MADMAX_76 is offline  
Old Nov 2, 2006, 07:14 AM
  #9  
Former Sponsor
iTrader: (133)
 
Join Date: Dec 2003
Location: Anywhere
Posts: 3,123
Thanks: 0
Thanked 0 Times in 0 Posts
MitsuJoe is offline  
Old Nov 4, 2006, 11:00 PM
  #10  
Newbie
 
Join Date: Apr 2004
Location: Bezerkley
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
There was a good article in Compact Sport about the size of the pipe vs the housepower. Unless it is turbo, too large a pipe will hurt the performance.
tursup is offline  
Old Nov 7, 2006, 03:12 AM
  #11  
Evolved Member
iTrader: (33)
 
riceball777's Avatar
 
Join Date: Oct 2006
Location: Los Angeles
Posts: 1,367
Thanks: 0
Thanked 1 Time in 1 Post
i would go with the 2.5 and 3" if your going turbo
riceball777 is offline  
Old Nov 8, 2006, 02:28 PM
  #12  
Newbie
iTrader: (1)
 
Join Date: Sep 2006
Location: socal
Posts: 48
Thanks: 0
Thanked 0 Times in 0 Posts
3" is perfectly fine on an NA motor so long as it has a large displacement. Ralliart models have a 2.4L motor correct? I know on 240sx's with our 2.4L four bangers, we make more power and torque across the board with 3" exhausts. That whole 2.5" max diameter piping on NA 4 bangers does not apply to large displacement 4 cylinder motors.

What works on a 1.6L and 1.8L honda motor doesn't apply to 2.4L motors.
Flybert is offline  
Old Nov 8, 2006, 03:03 PM
  #13  
Evolved Member
Thread Starter
 
MITVRX's Avatar
 
Join Date: Jul 2006
Location: Australia
Posts: 1,839
Thanks: 0
Thanked 0 Times in 0 Posts
The shop recommends 2" exhaust, otherwise I'll lose alot of low end torque. They said "Do you want top end performance or driveability?"

Top end 2.25" - 2.5"
Driveability 2.0" - low-mid-high

Do you think I should go 2 or 2.25?

I won't go 2.5 or larger..
MITVRX is offline  
Old Nov 8, 2006, 04:33 PM
  #14  
Former Sponsor
iTrader: (133)
 
Join Date: Dec 2003
Location: Anywhere
Posts: 3,123
Thanks: 0
Thanked 0 Times in 0 Posts
2.5" is as large as you should go. It will also make great power when you turbo too, or add more mods.

Stock is 2" so I think that is silly. 2.25" is a great size as there is already lots of premade parts in this size from Magnaflow. Although I prefer the 2.5" if you are going custom.

I mean really there are Lancer 2.0 guys with a 2.5" system with no adverse affects. The Ralliart will suck it up and blow it out either way!
MitsuJoe is offline  
Old Nov 8, 2006, 04:57 PM
  #15  
Former Sponsor
iTrader: (67)
 
ROCK's Avatar
 
Join Date: Dec 2001
Location: Santa Fe Springs, CA.
Posts: 7,825
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by tursup
There was a good article in Compact Sport about the size of the pipe vs the housepower. Unless it is turbo, too large a pipe will hurt the performance.

2.25 has been the best compromise.


ROAD/RACE
ROCK is offline  

Thread Tools
Search this Thread
Quick Reply: Exhaust Size. 2.25" or 2.5"?


Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.