Changing Muffler - Will it make a difference?

Hotwire

1 AYC Bar
Premium Member
Location
South Australia
First Name
Lee
Drive
97 COTY
Hey all,

I'm seeking some opinions on a thought I've been having. Now, with a new born baby and only one (my) income, money available for modifications is now basically non existant. SO I've been thinking about the exhaust, and considering what I could do.

The rear muffler is probably the most restrictive part of the exhaust (baffled stock box) and I'm wondering if it would be worth while changing over the muffler for a better flowing unit? i.e. a kinked straight through box, ie.
......____
___/ ___
____/....
if you get what I mean. I had a similar muffler on a previous EF Falcon and the sound was great, about 85dB (so not too loud) but seemed to free it up a bit.

Now before people say "Go 3" cat back exhaust" I dont have $400-500 spare, Im thinking finding a second hand 2.5" muffler for $50-70, and paying an exhaust shop $30-$50 to weld on a pipe/flange and bolt it up to the stock exhaust. (presuming stock exhaust is 2.5", anyone confirm?)

What are peoples thoughts - any gains to be had, or would it really be just noise?

Thanks!
 

VR-04-TT

1 AYC Bar
Location
QLD
First Name
Paul
Drive
1999 Legnum Type S
Stock Mitsu mufflers are really restrictive. So yes you will notice a difference. It won't be massive, but you'll feel the car just breathes better, especially in the top end of town.

That's what I've noticed with any mitsu that I've changed the muffler on.
 

naughtika

OzVR4 Stalker
Location
Brisbane, QLD
First Name
Christian
Drive
'96 Galant VR4, '17 MB A180, '25 Macan GTS
Lee.. that type of muffler is what im planning on getting soon.. will let you know how i go once i get it on.. that's if i get it before you do :)
 
G

Guest

Unregistered
Mate don' just buy a muffler ... you'll be wasting your money ... If u get some money down the track you'll want to do the exhaust properly, therefore that cash u spent on the muffler will be a waste. Put the money aside and gradually add to it ... you'll be glad u did. Or spend the cash on good oil, trans flush, so ur car lives longer.
 

eddyvr4

Leaving Skid Marks
Location
SA
First Name
Eddy
Drive
2001 Legnum Type S, 2007 Kawasaki ZX14
You could price up a lukey 3' straight through 'ultraflow' muffler. this is what RPW reccomend with their full 3' systems, and they may be quite cheap, and then no need to upgrade it again later.

Or you could try to open up the original and modify it, that would be real cheap and you may get a pretty good result, and i would say a few readers would be interested to see pics of what one looks like inside, and if anything can be done with it.
 
G

Guest

Unregistered
Hey all,

I'm seeking some opinions on a thought I've been having. Now, with a new born baby and only one (my) income, money available for modifications is now basically non existant. SO I've been thinking about the exhaust, and considering what I could do.

The rear muffler is probably the most restrictive part of the exhaust (baffled stock box) and I'm wondering if it would be worth while changing over the muffler for a better flowing unit? i.e. a kinked straight through box, ie.
......____
___/ ___
____/....
if you get what I mean. I had a similar muffler on a previous EF Falcon and the sound was great, about 85dB (so not too loud) but seemed to free it up a bit.

Now before people say "Go 3" cat back exhaust" I dont have $400-500 spare, Im thinking finding a second hand 2.5" muffler for $50-70, and paying an exhaust shop $30-$50 to weld on a pipe/flange and bolt it up to the stock exhaust. (presuming stock exhaust is 2.5", anyone confirm?)

What are peoples thoughts - any gains to be had, or would it really be just noise?

Thanks!

Sounds like you and I aren't too dissimilar!

Exactly what i have been thinking! Let us know what you come up with.

I have one question though?

Will an evo cat back exhaust even come close to fitting as i may have access to one at very cheap price!
 

naughtika

OzVR4 Stalker
Location
Brisbane, QLD
First Name
Christian
Drive
'96 Galant VR4, '17 MB A180, '25 Macan GTS
Hotwire,

i've just had my cat back exhaust fitted last week.. all the way from cat it is 3" pipes & with magnaflow hi flow ceramic cat converter (same as LeeButs).. my main muffler is similar/same to what you've describe...

I can tell you it's not droney like those cannon type mufflers, but its got that strong sound, not loud but strong muscly (that's what how my gf described it).. maybe a 10" resonator will fix that.. we'll see.. i'll try to record it and post it here too...

also, i've chosen twin round tip to have that oem look, but the way the fitter had it on.. is a little on a slant and low.. :( I'll have to get them to fix it..
 

Hotwire

1 AYC Bar
Premium Member
Location
South Australia
First Name
Lee
Drive
97 COTY
Sounds good Christian! Do you know what make/model your muffler is? Lukey etc? How much did the system cost you? and the cat? cheers
 

naughtika

OzVR4 Stalker
Location
Brisbane, QLD
First Name
Christian
Drive
'96 Galant VR4, '17 MB A180, '25 Macan GTS
i believe the muffler is Lukey.. it was painted black as well.. it cost me $550 including the tip.. which i might get replaced later on..
 

Outlanded

Leaving Skid Marks
Location
Queensland
First Name
Brent
Drive
97 Legnum VR-4
i believe the muffler is Lukey.. it was painted black as well.. it cost me $550 including the tip.. which i might get replaced later on..

how does it feel with the new exhaust?

the shop that did yours , do you think they would do my exhaust in 3" but use my existing resonators and mufflers as they are already 3", the the piping is 2.5 & press bent :(
 

Taraska

Leaving Skid Marks
Location
Queensland
First Name
Taraska
Drive
Black VR-4!!!!!!
Hi mate. I am getting my muffler done tomorrow. I am getting 3inch canon with 4inch tip and 6inch body and it comes with adjustable silencer. All up $240 no more to pay.
Taras
 

Outlanded

Leaving Skid Marks
Location
Queensland
First Name
Brent
Drive
97 Legnum VR-4
Hi mate. I am getting my muffler done tomorrow. I am getting 3inch canon with 4inch tip and 6inch body and it comes with adjustable silencer. All up $240 no more to pay.
Taras

Taras,

so what was the go with your muffler in the end? has it got a fault?
 

happymatch

Leaving Skid Marks
Location
nsw, Newington
First Name
jono
Drive
Maza Astina 323, Merc C Kompressor
i got 3' turbo smart muffler in the garage from my old car, canon style with 4' tip. my stok muffler now is making clinking noise. thought about putting it in but saving bit more for full system. if i can not wait, i will just do it on the weekend.... i think it worth doing the full system beause

1. it is better
2. might have to upgrade later
3. and might regret.

you never know
 

Taraska

Leaving Skid Marks
Location
Queensland
First Name
Taraska
Drive
Black VR-4!!!!!!
Taras,

so what was the go with your muffler in the end? has it got a fault?
I am not sure but it looks like its from straightthru angles down and then up. The guy at the shop told me it would restrict a lot. I got it at home so maybe for the next meeting i will bring it with me.
Taras
 

naughtika

OzVR4 Stalker
Location
Brisbane, QLD
First Name
Christian
Drive
'96 Galant VR4, '17 MB A180, '25 Macan GTS
Taraska, bring it along on sunday, so we can investigate..

also Hotwire.. I think I was wrong about my muffler when i said it was lukey.. now i think it's redback which is what i think pipewerx usually use..
 
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