williamGT

iTrader: (5)

Hey everyone, when I had my resonator taking off last year I have notice they replaced it with smaller piping, looks like 2.25inch, so I'm wondering if I should change it to 3inch and leave the 2.5inch at the y pipe.

94ss06gxp

iTrader: (5)

its prolly bottle necking it a little bit but you wont know till you try the 3"

williamGT

iTrader: (5)

Yeah, I just don't want to replace the mufflers and tips.

AlabamaGuy

iTrader: (5)

I'm full 3" mandrel. Love it.

JDMC5

iTrader: (3)

you should run at least 3". just my opinion.

monte_with_a_LS4

iTrader: (4)

i have 3in coming off my down downpipe then splits off to 2 1/2in and i love it

williamGT

iTrader: (5)

Yeah that what I want, 3" from the 3" downpipe and have it all the way were the rear y pipe is and split at 2.5"

SSGoat

iTrader: (2)

i have 3 inch from the cat no res manual cutout, and 2.5 y pipe.. if i could do it again, id save the money on the bigger piping and just use it on an electric 2.5 cutout right after the cat.. but thats just me, i love loudness

ImpSS07

iTrader: (3)

How does it sound to you Will?? If it sound good then just leave it and get a cutout. I plan on leaving ALL the exhaust stock and just putting in a cutout when I get my headers installed. I already have my cutout, just waiting to get them installed and tuned at the same time.

williamGT

iTrader: (5)

I like the sound, but its a smaller pipe were they took the resonator off, so instead of putting the 2.5" pipe on, I was thinking of 3" up to the Y.
I don't plan on putting a cutout on.

SigmaX6

Had my car up on a hoist today. Had my res removed by a muffler shop when I first got it and it is indeed a smaller diameter (2.25) painted with rust inhibitor...?? lol. I am getting a 3 inch custom DP + 3 inch high flow Cat then sizing it back just before the res delete. So 3 -> 2.25 -> 2.5 = lol

Price:
High Flow Cat $100
Res Del $175 ( Got screwed )
DP with install $300

Total = $575

williamGT

iTrader: (5)

I'm gonna get this done in june....3" and leaving the magnaflow Y and mufflers the way it is....Wonder if it will sound louder, because now its 3" to 2.25" to 2.5"

AlabamaGuy

iTrader: (5)

There isn't too much reason to do 3" to 2.25 to 2.5.

Think about blowing into a straw with the middle pinched. The gas has to be pushed out the entire length of the exhaust so the whole thing should be open.

Mikzgp

iTrader: (2)

you still wanna keep some back pressure. I honestly don't know how bad that would make it having the 2.25 in there, but since the gas vapors get smaller as they cool down may not notice a difference

TheMonteMan

i think that 3" to 2.25 to 2.5 is what he has now. hes replacing the center section so that is all 3" to the y that he has now thats 2.5.

i think if does get louder it wont be a hugely noticeable difference.

AlabamaGuy

iTrader: (5)

Ok I'm with you now.

That sounds like a good setup to me.

JDMC5

iTrader: (3)

True. You do not want that 2.25 on there. single 3" or dual 2.5" minimum. The sound difference with be negligible, then again so will the power but every little bit helps.

williamGT

iTrader: (5)

I'm going to make sure they do a good job, I don't want my exhaust hanging low and hitting heat shields, 3" is a bigger pipe.

AlabamaGuy

iTrader: (5)

I don't have any isues with my 3"