Help with custom exhaust - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

cyguy · 05-02-2003, 06:33 PM

I want get a custom exhaust made for my car because I don't have the money to get a true cat-back. But anyways, what size piping would you guys recommend getting? I've heard to get 2.25" or 2.5". What's the difference? Please help, I just want to get the best for my money. thanks.

logo20 · 05-02-2003, 08:58 PM

if you read all the old threads about custom exhaust you'll find out that buying a cat-back system is the best you can get for your money unless you can find a shop that does MANDREL bend which would be very difficult to find. If you buy a cheap muffler and larger pipe with crush bends it would be a total waste of money. First the sound is gonna be horrible, and sencondly you might even lose performance.

Strider · 05-02-2003, 10:33 PM

yah, most shops do Mandrel bends, its juss a lil' bit more. I went with a 2.5 with header and intake on my old 240 and it felt great. But then again i can't compare it to a 2.25. i felt the loss of low end but my top end gained quite a bit

twitchy · 05-03-2003, 02:03 AM

Quote:

Originally posted by Strider
yah, most shops do Mandrel bends, its juss a lil' bit more. I went with a 2.5 with header and intake on my old 240 and it felt great. But then again i can't compare it to a 2.25. i felt the loss of low end but my top end gained quite a bit

agreed
I went a half inch bigger than stock, mandrel bent, cheap. Cut the cat off too. Huge high end gain, little off the bottom, and leave your car on, it only sounds ****ty and sucks the fuel if you remove it.

the head · 05-03-2003, 02:07 AM

i assume you mean cat
there are times that both of those statements are untrue twitchy don't make statements that broad it disinforms the community

nas240man · 05-03-2003, 07:56 AM

Quote:

what size piping would you guys recommend getting? I've heard to get 2.25" or 2.5"

I bent up a 2.5" for my car and have regretted it ever since, much louder then i thought it was going to be... so i say go 2.25" but thats just my $.02..

as for the mandrel bends, yea just call around and ask..and dont let them rip you off, shouldn't cost more than like 100-150 bucks total(bending pipe and installing it & muffler on the car)

twitchy · 05-03-2003, 11:25 AM

Quote:

Originally posted by the head
i assume you mean cat
there are times that both of those statements are untrue twitchy don't make statements that broad it disinforms the community

I did mean cat, sorry

let me be more precice then

On my 1993 240SX SE with STOCK exhaust system, I discovered that replacing the exhaust system from the downpipes (where they merge from 2 to 1) to the stock muffler and removing the catalytic converter and resonator added more PULL at the higher rpms than before (ie over about 5000) albeit seeming a tad more sluggish off the line. As well, I later reinstalled the cat since I couldnt take the nasty soundeffects without it any longer. When I put it back on, the differences were an increase in fuel mileage (close to stock again) as well as a reduction in the tinny rattly sound. The performance gains stayed the same, basically

hope you are all un-misinformed

logo20 · 05-03-2003, 01:46 PM

Quote:

You can get a custom cat-back just the way you want.
It's not like there are no muffler shops in the U.S. that can make up a good exhaust and you HAVE to buy a pre-made one from Japan- that is stupid, and just reflects the biased opinions/lack of experience/knowledge in the young 240 community.
(hint- find where domestic V8 guys go for exhaust around you)

I think you misunderstood me. I said UNLESS he finds a shop that does mandrel bends, it is alot better to buy a catback. I didn't say he "has" to buy a catback system, and IT IS NOT STUPID to buy a catback system from Japan over a custom exhaust that would save you $100-150, since a true system guarantee better sound and performance.

cyguy · 05-03-2003, 03:42 PM

thanks for all the help and suggestions. I think I'll call around and find the best deal I can get for MANDREL bending, but I'll still keep in mind a cat-bat (if I can get some money saved up for one).

twitchy · 05-04-2003, 01:46 AM

i forgot last night, if you do decide on a cat back system, avoid pacesetter (assuming they make one for your car)

my dad put one on his civic and it is rotten to hell with rust already (only a year old) and it bangs when you hit bumps and took 3 tries and some melting/bending/damage before it fit properly which it still doesnt.

Improvement in sound and power though.

05-02-2003, 06:33 PM	#1
cyguy Join Date: Jul 2002 Location: Bay Area, CA Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	Help with custom exhaust I want get a custom exhaust made for my car because I don't have the money to get a true cat-back. But anyways, what size piping would you guys recommend getting? I've heard to get 2.25" or 2.5". What's the difference? Please help, I just want to get the best for my money. thanks.

05-02-2003, 08:58 PM	#2
logo20 Zilvia Junkie Join Date: Apr 2002 Location: Houston, TX Posts: 345 Trader Rating: (0) Feedback Score: 0 reviews	if you read all the old threads about custom exhaust you'll find out that buying a cat-back system is the best you can get for your money unless you can find a shop that does MANDREL bend which would be very difficult to find. If you buy a cheap muffler and larger pipe with crush bends it would be a total waste of money. First the sound is gonna be horrible, and sencondly you might even lose performance. __________________ http://community.webshots.com/user/logo20

05-03-2003, 02:07 AM	#5
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	i assume you mean cat there are times that both of those statements are untrue twitchy don't make statements that broad it disinforms the community __________________ I never knew you could do that with an eggplant

05-02-2003, 10:33 PM	#3
Strider Zilvia Junkie Join Date: Sep 2001 Location: SoCal, Corona Posts: 461 Trader Rating: (0) Feedback Score: 0 reviews	yah, most shops do Mandrel bends, its juss a lil' bit more. I went with a 2.5 with header and intake on my old 240 and it felt great. But then again i can't compare it to a 2.25. i felt the loss of low end but my top end gained quite a bit

05-03-2003, 03:42 PM	#9
cyguy Join Date: Jul 2002 Location: Bay Area, CA Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	thanks for all the help and suggestions. I think I'll call around and find the best deal I can get for MANDREL bending, but I'll still keep in mind a cat-bat (if I can get some money saved up for one).

05-04-2003, 01:46 AM	#10
twitchy Zilvia FREAK! Join Date: Apr 2003 Location: Ontario Posts: 1,579 Trader Rating: (0) Feedback Score: 0 reviews	i forgot last night, if you do decide on a cat back system, avoid pacesetter (assuming they make one for your car) my dad put one on his civic and it is rotten to hell with rust already (only a year old) and it bangs when you hit bumps and took 3 tries and some melting/bending/damage before it fit properly which it still doesnt. Improvement in sound and power though.