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2.25 vs.2.5 inch exhaust?

  • Thread starter Thread starter jester111
  • Start date Start date Mar 14, 2004
J

jester111

New Member
Mar 3, 2004
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Toronto, Ca
Mar 14, 2004
#1
  • Mar 14, 2004
  • #1
hi
has anyone ever done a true dyno comparison with aftermarket exhaust ( cat backs ) eg. mac, flowmaster, dynomax, 2.25 vs. 2.5 inch? how much of a difference is there?
 

MUSTANGJOE

Silver Stanger
Founding Member
Apr 9, 2002
1,644
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59
Mar 14, 2004
#2
  • Mar 14, 2004
  • #2
jester111 said:
hi
has anyone ever done a true dyno comparison with aftermarket exhaust ( cat backs ) eg. mac, flowmaster, dynomax, 2.25 vs. 2.5 inch? how much of a difference is there?
Click to expand...

I would like to know also..and is there a sound difference to?
 

speedracer238

New Member
Sep 18, 2003
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Clawson, MI
Mar 14, 2004
#3
  • Mar 14, 2004
  • #3
MUSTANGJOE said:
..and is there a sound difference to?
Click to expand...

2.5 will give you a little bit deeper and mellower sound, but probably not by too much.
 

stangbear427

Active Member
Nov 11, 2002
2,401
1
49
New England
Mar 14, 2004
#4
  • Mar 14, 2004
  • #4
It is totally case specific. On a bone stocker, the 2.25" (stock size) will offer more low end torque, while the bigger 2.5" will (sometimes) give more high rpm HP, depending on the mufflers. Same deal with headers, the restrictive 1.5" ones are torquier on a stock 5.0 then good quality 1&5/8" will be. Once you start getting into bolt ons, that can change, but how much good it really does is entirely situational. Pretty much the only thing you can count on when adding a catback system is that it will sound faster. Anything more depends on what else you do and how well you choose your parts. Getting the right exhaust foor your combo determines whether or not it will do anything for you.
 

MUSTANGJOE

Silver Stanger
Founding Member
Apr 9, 2002
1,644
17
59
Mar 15, 2004
#5
  • Mar 15, 2004
  • #5
speedracer238 said:
2.5 will give you a little bit deeper and mellower sound, but probably not by too much.
Click to expand...

I have a 2 1/4 off road h..that was costum made. I wanted to switch to 2 1/2 but wanted to know if it was worth spending money on that? what do you guys think.
 

IMissMy93Fox

New Member
Mar 9, 2004
143
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0
Mar 15, 2004
#6
  • Mar 15, 2004
  • #6
I dont think it would be worth it for you right now, once you get into some other go fast stuff it would help out.
 

85_SS_302_Coupe

it sucks (I know) to be on the receiving end
15 Year Member
Nov 11, 2003
6,945
1,598
223
Northern KY
Mar 15, 2004
#7
  • Mar 15, 2004
  • #7
sometimes smaller diameter pipes have that "flapflapflapflapflapflap" mudder truck sound
2.5's and bigger go "glubglubglubglubglubglubglub" like a musclecar.
 

dvs bullet

New Member
Feb 20, 2004
326
0
0
Ontario, Canada
Mar 15, 2004
#8
  • Mar 15, 2004
  • #8
stangbear427 said:
It is totally case specific. On a bone stocker, the 2.25" (stock size) will offer more low end torque, while the bigger 2.5" will (sometimes) give more high rpm HP, depending on the mufflers. Same deal with headers, the restrictive 1.5" ones are torquier on a stock 5.0 then good quality 1&5/8" will be. Once you start getting into bolt ons, that can change, but how much good it really does is entirely situational. Pretty much the only thing you can count on when adding a catback system is that it will sound faster. Anything more depends on what else you do and how well you choose your parts. Getting the right exhaust foor your combo determines whether or not it will do anything for you.
Click to expand...



My thoughts exactly
 
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