removing centre muffler

[2BNVS]

my cars got a 3'' exhaust with 3'' hi flow cat with 2 mufflers, if i removed the centre muffler would it have much affect on power or not really? also it obviously will be louder but im not sure how much louder it will be?

cheers...ben.

[HSVKLR]

I wouldnt mind knowing either - my car is too quiet....

[adam 32]

mine is too loud... haha if i were u id leave it. theres nothing worse than a loud-ass car at 7am in the mornin drivin to work

[4 Doorz]

Is your rear muffler straight thru? I have two mufflers - rear one has an S bend in it to help keep down noise, but have set it up so I can take off the rear one at track for less back pressure. If both are straight thru, prolly not much power advantage removing either, (but will sound heaps good) - that is if mid one is like a hot dog, apparently, if it's really big, turbulence may be removed if you take if off and there will be more power there.

[Zman]

i might be interested in the muffler if you remove it

anyone know much are they to install into an exisitng exhaust?

[2BNVS]

yer the rear is a straight thru, i went and got a quote today on how much it would cost to replace it with a 3'' pipe and was 100 bucks, so ill most likely go thru with it, so when i take it off Zman ill let u know, not sure how much it would be for u to install it on to an existing exhaust, probs round the same as for me replacing it with a pipe...

cheers...ben.

[akeenan]

i took mine out and replaced it with a straight pipe. And i am very happy.

[Zman]

akeenan , did you notice much of a difference in sound and power?

[sumfatchin]

my old system used to have a center muffler and a rear muffler, first i took of the center one cause it wasnt loud enough, that made a difference, but not enough for passangers to even notice it...

finnally i pulled of the rear muffler and replaced it with a smalish 3 inch cannon muffler, with very little baffling material (whatever its called).

Its definatly alot louder, but the problem with skylines (moreso ones with stock turbos), is that they are impossible to make loud, i got the dude at the exhaust shop to start it up with the system off and it still wasn't all that loud...

improvment in power is very minimal, maby a couple of kws?, but more than likely, you wont notice it.

[sumfatchin]

dude, 100 bucks is a rip off... think of how much work he has to do...

it took my guy about 10 minutes, i was watching him do it, cost $40

[Zman]

fatchin, where'd u get it done at?

[sumfatchin]

i cant remember the place, it was out at penrith i think.

just go in and ask if they'l do it for 40 dollars

[Zman]

i just got a pic of my exhaust,

wahts this ...

[GILTY]

I got mine done aswell, and it cost me $40 as well...$100 is a complete rip off!!!

Mine sounds sweet, a little droney between 2200rpm and about 2500 rpm, but nothing I can't deal with!

The RB series engines sound great, so in my books the louder the better. Sounds gold on full noise whilst drifting with the BOV going off all over the place.

[Jetdat]

Zman;

looks like a hot dog.

[GILTY]

resonator

[akeenan]

akeenan , did you notice much of a difference in sound and power?

no difference in power. difference is sound though. it all depends what type of system you have. obviously if you take out a muffler it will make the car louder.

that is a resonator

[Revhead]

I had the same dilemma a while ago - I had a 3" dump, 3" cat, and two straight-through 3" mufflers. I had a shop remove my centre muffler and replace it with a flaged piece of 3" pipe. Also had them make a dropped pipe, which comes out under the passenger seat and eliminates the cat too, for drags etc.

Anyway, after removing the centre muffler, my car was certainly louder and had a deeper note, but doesn't drone and has quite a nice note. With the dropped pipe on, it's not "that" loud at idle, but you can hear the turbo spool from about 1200rpm, and it sounds like a Nascar when the revs build up around 5k But yeah, whether it's too loud or not will depend on the muffling qualities of your remaining muffler. Mine seems to have been perfect, yours might make it too loud or too quiet. Just try it and see. Don't expect a massive power difference though.

[benm]

Interesting... I too have the 2 mufflers. My exhaust consists of:

3" Custom front/dump pipe -> 3" Cat -> 3" Nismo exhaust with a middle and rear muffler -> 4" Nismo Tip.

I'm thinking of getting this middle muffler cut out and replaced with just a 3" straight through pipe (or possibly getting it done so that i can swap between a muffler or straight through pipe, daily driving vs track/drag).

So about $40 and 30mins and it should be done eh?