[tjames]

Originally Posted by itschristorres8 those numbers are pretty ideal and right where you should be for a manual which is good its hard to compare though because you cannot take your exhaust off and try 2.25 to feel ive taken my exhuast off 3inch to 2.5 then 2.5 magnaflow muffler. i took it off so its just the 3inch dump. deffinitly some low end power loss i had to put it back. and everyone has told me ill notice my car being faster with the 3inch and my car pushes out 279rwhp with the tune i have now roughly about 260rwhp. 2.5 is better if you have plans on at least nitrous or a s/c or stroking the motor

ya i know what your saying. eventually i will be going f/i

[Averlus]

Hahaha, one more post and you'll have the new year, tjames.

I'm afraid my dreams and aspirations to mod may not come...I gotta make two car payments in addition to paying about 10 bills on just my income...

[xSxTxAxNxGx]

Originally Posted by tjames no problem, post sounds clips and pics when its done

practice what you preach

[Onemanzu]

Originally Posted by xSxTxAxNxGx practice what you preach

gotta search for them

[xSxTxAxNxGx]

Originally Posted by Onemanzu gotta search for them

i did he only has dyno runs right nowor atleast i think so

[Onemanzu]

he has some pics but no real exhaust clip

[burin_rubber]

i what i plan to go with is 2.5 and some nice 3 inch tips

[itschristorres8]

Originally Posted by burin_rubber i what i plan to go with is 2.5 and some nice 3 inch tips

do you have plans for forced induction or a 4.2L or 4.3L

[tjames]

Originally Posted by xSxTxAxNxGx practice what you preach

haha maybe tomorrow ill go to best buy and buy a cord to go from my video camera to my computer. my mufflers have broken in a bit and are louder and deeper then when i first got them

[dgt_mustang]

this post grew, im gonna go with 2.25, i would go with 2.50 but from what i can see the shop im doing it at recommends 2.25. either way i think its going to be awesome, i would really like to take the cats off, im fairly sure they're already gutted, but as for now, the cats are staying on it, shouldnt be any difference considering that theyre gutted though right?

[dgt_mustang]

anyone??

[3.8Coastie]

i got my exhaust custom made from a shop in alaska with flow 40's and i cant stand the sound... it has a nice deep tone but it is barely louder than my stock and i have no clue why. im planning on cutting off the pipes right behind the mufflers.. i hope that will make it louder. im gonna fake out the rear exit pipes also. i have 2.25 inch piping and 4 inch tips

[tjames]

Originally Posted by dgt_mustang this post grew, im gonna go with 2.25, i would go with 2.50 but from what i can see the shop im doing it at recommends 2.25. either way i think its going to be awesome, i would really like to take the cats off, im fairly sure they're already gutted, but as for now, the cats are staying on it, shouldnt be any difference considering that theyre gutted though right?

if they are gutted it will be even louder with the new exhaust but you will also loose more low end torque because of less back pressure

[dgt_mustang]

low end torque?? meaning i wont be able to get up and go as well?

[acmillr]

I did a cams/heads swap on an 04 GT the other day. It had Flowmaster 40's and I was really impressed with the sound.

[Onemanzu]

Originally Posted by dgt_mustang low end torque?? meaning i wont be able to get up and go as well?

you will have a tiny bit less power up to about 2k rpm

[tjames]

Originally Posted by dgt_mustang low end torque?? meaning i wont be able to get up and go as well?

yes because of less backpressure. but it really wont be that bad because your getting 2.25" pipe. just saying if they are gutted your going to have less backpressure and loose a little low end torque, but that torque will be shifter up in the powerband so you will have a little more up top

[dgt_mustang]

my 3.73 gears should fix that though eh?

[tjames]

Originally Posted by dgt_mustang my 3.73 gears should fix that though eh?

yes and more even more

[HMUSN]

I would get the 2.5 exhaust.
Just make sure you "lay the pipe" correctly and you will be fine