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Old 05-02-2003, 06:33 PM   #1
cyguy
 
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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.
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Old 05-02-2003, 08:58 PM   #2
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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.
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Old 05-02-2003, 10:33 PM   #3
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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
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Old 05-03-2003, 02:03 AM   #4
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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.
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Old 05-03-2003, 02:07 AM   #5
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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
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Old 05-03-2003, 07:56 AM   #6
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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)
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Old 05-03-2003, 11:25 AM   #7
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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
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Old 05-03-2003, 01:46 PM   #8
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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.

Last edited by logo20; 05-03-2003 at 01:51 PM..
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Old 05-03-2003, 03:42 PM   #9
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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).
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Old 05-04-2003, 01:46 AM   #10
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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.
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