240SX Exhaust - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

millelu · 02-07-2005, 01:55 PM

I just discovered that my 240SX has two mufflers, one a little after the cat and then the one at the end. The one in the middle needs to be replaced since the entire area around the outlet is missing, which caused quite an increase in noise and emissions.

My question are as follows: Is there supposed to be a muffler there? Would replacing it with piping cause a loss of backpressure or anything like that?

Replicant_S14 · 02-07-2005, 02:03 PM

Quote:

Originally Posted by millelu

My question are as follows: Is there supposed to be a muffler there? Would replacing it with piping cause a loss of backpressure or anything like that?

Just have some tubing welded in it's place. You won't notice any difference.

***S14DB*** · 02-07-2005, 02:03 PM

That's your Resonator. It will be loud if you don't have a turbo.

Don't worry about backpressure it's a myth. Just have a muffler shop weld in a new res. Stock muffler sounds like crap without a res.

nismo2491 · 02-07-2005, 02:03 PM

that part doesn't effect emissions at all, noise yes.

replacing it with piping should be fine, it will get quieter because you will no longer have an exhaust leak, but it will be a bit louder than stock. if you don't mind a tad louder and a throatier groan then go for it.
KEvin

millelu · 02-07-2005, 02:14 PM

Thanks guys, I'm not the most mechanical guy in the world, more of a computer guy, but I sure love driving the things! I was planning on replacing my muffler then also with a Megan Racing M-N1. Anyone have any good or bad things to say about Megan Racing? I don't have a whole lot of money so I can't afford a brand new HKS or A'PEXi system, and the Megan looks pretty nice I think.

***S14DB*** · 02-07-2005, 02:30 PM

Search is your friend...

I would go with the SS Autochrome Exhaust http://www.zilvia.net/f/showthread.php?t=70941

DocTaDrifT · 02-07-2005, 02:45 PM

it seems like everyone is getting the SSAC exhaust

**Phlip** · 02-07-2005, 10:27 PM

Yep, it's the one I will be getting as well

02-07-2005, 01:55 PM	#1
millelu Join Date: Feb 2005 Location: Wisconsin Posts: 34 Trader Rating: (0) Feedback Score: 0 reviews	240SX Exhaust I just discovered that my 240SX has two mufflers, one a little after the cat and then the one at the end. The one in the middle needs to be replaced since the entire area around the outlet is missing, which caused quite an increase in noise and emissions. My question are as follows: Is there supposed to be a muffler there? Would replacing it with piping cause a loss of backpressure or anything like that?

02-07-2005, 02:03 PM	#4
nismo2491 Zilvia FREAK! Join Date: Feb 2004 Location: Southern MD Age: 41 Posts: 1,373 Trader Rating: (0) Feedback Score: 0 reviews	that part doesn't effect emissions at all, noise yes. replacing it with piping should be fine, it will get quieter because you will no longer have an exhaust leak, but it will be a bit louder than stock. if you don't mind a tad louder and a throatier groan then go for it. KEvin __________________ To quote the great Ron White: if life gives you lemons, make lemonade. and try to find somebody who's life gave them vodka, and have a party

02-07-2005, 10:27 PM	#8
Phlip Yes, I look like that Join Date: Mar 2002 Location: In my supervillain's lair Posts: 27,980 Trader Rating: (19) Rides Gallery: Phlip Feedback Score: 19 reviews	Yep, it's the one I will be getting as well __________________ Weirdo And I write too!

02-07-2005, 02:03 PM	#3
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	That's your Resonator. It will be loud if you don't have a turbo. Don't worry about backpressure it's a myth. Just have a muffler shop weld in a new res. Stock muffler sounds like crap without a res.

02-07-2005, 02:14 PM	#5
millelu Join Date: Feb 2005 Location: Wisconsin Posts: 34 Trader Rating: (0) Feedback Score: 0 reviews	Thanks guys, I'm not the most mechanical guy in the world, more of a computer guy, but I sure love driving the things! I was planning on replacing my muffler then also with a Megan Racing M-N1. Anyone have any good or bad things to say about Megan Racing? I don't have a whole lot of money so I can't afford a brand new HKS or A'PEXi system, and the Megan looks pretty nice I think.

02-07-2005, 02:30 PM	#6
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Search is your friend... I would go with the SS Autochrome Exhaust http://www.zilvia.net/f/showthread.php?t=70941

02-07-2005, 02:45 PM	#7
DocTaDrifT Zilvia Addict Join Date: Oct 2003 Location: Montebello Age: 38 Posts: 966 Trader Rating: (0) Feedback Score: 0 reviews	it seems like everyone is getting the SSAC exhaust