quieten down a 2.5 catback?

[pillzor]

just wondering how you would go about quietening down a 2,5 catback with extractors without losing any power.... sacriledge i know but i can just see me getting defected for too noisey.
i still want to be able too hear it ofcourse..... just not so ummm cop magnetish.

[FAT.36L]

Could always chuck a rear resi onit if you dont have one

[D-Man]

watch the right foot. dont plant it. then you'll be right, exhausts arent that lound, when you put your foot to the floor then it is an issue.

[pillzor]

yep its not that loud when cruising, ive just chucked in a tuned memcal which changes up gears later in the revrange so thats making a bit of a difference ..... and my right foot ofcourse :P

[rocco555]

if its that loud, your missing at least one of your mufflers... put them back in

[pillzor]

if its that loud, your missing at least one of your mufflers... put them back in

and lose power? no thanks.

[FAT.36L]

and lose power? no thanks.

Lose power????Explain

[pillzor]

wouldnt adding an extra muffler effect airflow? i thought the whole point of a 2.5 catback straight through was airflow.
ive got cai , ectractors and the catback... why would i want to go restricting it?

[Cobez]

Can't have your cake and eat it too. There seems to be a flood of people who want to "do something" without it "doing something else" recently.

There was that chick who wanted to put a cat back on her V6 but didn't wanna get defected for having a mod on her P's also.

Muffler, or go back to a stock exhaust. Your 2.5" cat back won't be doing much for your car in the way of power anyway dude, a muffler will make almost NO difference to power anyways. Exhausts on stock 6's are more for noise and not for power (unless you have forced induction, cam and those kinds of things).

[FAT.36L]

wouldnt adding an extra muffler effect airflow? i thought the whole point of a 2.5 catback straight through was airflow.

Then why not go 3inch??? You wouldnt lose much at all mabye onlt 0.5 - 1kw witch you'll have to be a supercar drive to relise

[pillzor]

if theres a cake infront of me im going to eat it....... quietly with no one looking at me :P

[Cobez]

Three inch would be a loss on whatever power the car has. Loss of back pressure. Three inch is MASSIVE for a V6.

[pillzor]

Then why not go 3inch??? You wouldnt lose much at all mabye onlt 0.5 - 1kw witch you'll have to be a supercar drive to relise

yeh dont wanna go spending money on replacing a month old exhaust , i thought there may have been some other way too quiet it down.
besides i dont want my car too sound like a loose fart.

[FAT.36L]

Three inch would be a loss on whatever power the car has. Loss of back pressure. Three inch is MASSIVE for a V6.

Yer i kno that i was just trying to make a point

1 went for 2 mufflers back to 1 and made it every louder but no power gain

[pillzor]

hmm if its going to be complicated or expensive ill just leave it and look in my mirrors before over taking people in 2nd.
i LOVE the way it sounds now, i just dont want it having too go over the pits at regency and never being driven again.

[Reaper]

and lose power? no thanks.

I ran 5.3 0-60mph in an un-opened VP 5 litre that had done over 300,000 km. My exhaust = pacemakers, hi-flow cat (single) and a 2 1/2" single system including the rear muffler. Oh - it sounds awesome too. That setup will be all you ever needed on any bolt on v6 or 5 litre VN-VS.

If you have more power then maybe consider a twin 2 1/2" system and dual cats. Either way you need to keep the rear muffler.

Reaper

[ephect]

add another muffler and ur done.

EDIT: Reaper bet me to it

[Cobez]

hmm if its going to be complicated or expensive ill just leave it and look in my mirrors before over taking people in 2nd.
i LOVE the way it sounds now, i just dont want it having too go over the pits at regency and never being driven again.

Man all they do is cut a section out and weld a muffler in. It will take them 10 minutes and cost you maybe $80 or around there. It's really not a huge deal or job.

[poids]

i got a 2.5 inch exhaust on mine and the bloke that did it was a really good bloke recommended a rear resonator man it was a little bit quiter than the normal drone but it has its own unique tone now and it aint cop bait win win m8 i reccomend a rear resonator not a huge one though

[pillzor]

yeh i dont want to loose the burble from the extractors either , will that be ok?

[Cobez]

Well that doesn't leave you that many options dude. It's either muffler / resi, or just try not to drive it so the exhaust roars out.

There isn't really much else you can do.

[HamaTime™]

Like has been said you can't have your cake and eat it too. It's like having sex but expecting yourself to still be a virgin afterwards...there are always pros and cons to every decision.

In the case of this exhaust, put another muffler on anyway, if your so concerned about loss of power, then get over it, seriously. An exhaust system on a stock 6 without many other supporting mods will give you such a small power gain you won't notice it. 1-5kw at MAX I would say.

[FAT.36L]

Just ask for a "hot dog' insted of a full sized resi

[Cobez]

LOL, interesting analogy hahaha ^^^ (hamatime)

[pillzor]

im not concerned with a couple of KW loss at all , also there are other supporting mods just so you know.