What is the best exhaust fo a '91 240 SX SE

[phatkorean]

I did a search and really couldn't find my answer. I am getting ready to purchase a '91 240 SX SE but the exhaust needs to be replaced. I plan on a SR20DET swap in 12 months. With the new turbo and motor I only want to tune it to around 250-350 HP. Would I be cool with a 2.5" or 2.75" exhaust? Should I just settle for a 2.5" now and sell it later and buy a 3.0"+ exhaust later? And finally which exhaust would you guys recommend? Thanks for the help.

[hookedup240]

the ever popular n1 dual.

[Pacman]

Originally posted by hookedup240
the ever popular n1 dual.
] :stupid:

[phatkorean]

Any particular reason for the dual as opposed to the single? What about the pipe size? I'd like to use the same diameter pipe for a later turbo application. Again, I will only look to make about 250-350 HP.

[phatkorean]

Hmm, just talked to a friend and he said to go with an N1 with a silencer and then remove the silencer once I get the turbo.

[240Degrees]

silencers look pansy. a search would come up with a lot of stuff on both n1 and n1 dual exhausts. my n1 dual, NA engine, is pretty quiet. passengers don't realize i have an aftermarket exhaust if the windows are up. It's 3 inch piping too. You can't go wrong with the N1 single. go silencer if you like :) i just don't like how it looks.

[misnomer]

Issue with the n1 dual, pacman? Care to share why rather than pass around insults? The N1 dual is probably the most popular exhaust for the 240sx, couple that with a high flow cat and you'll be in good shape.

100hp is a large range to deal with. At the low end, a 2.5 or 2.75" exhaust will do you just fine. High end you'll want larger.

We needs more information. How quiet do you want it? How do you want it to look?

I definitely don't recommend getting an exhaust to use for a year and then upgrading. A 3" turbo exhaust is loud as hell, and will begin to work against you in performance on an N/A KA, stick with stock for a while if that's the route you want.

[phatkorean]

Well the car I am going to by NEEDS a new exhaust. I can tell because the muffler no longer connects to the mid pipe.


I don't really care for looks. Personally I think the tips on all aftermarket exhausts are too big. I mean the pipe coming out of the muffler is about yea big, but the tip is super yea big. Since I don't really care for the look of the exhaust the silencer won't matter to me. I like function over form.

100 HP is a lot of play room but I expect to top out at around the mid 300's. Everything has to be done in moderation on my budget. Car and exhaust now, engine later and upgraded turbo and intercooler much later. One year intervals for large purchases fit my budget nicely. That and sprinkling a fuel pump here and a sway bar there throughout the year. Hmm, I want a donut now for some reason.

I like the idea of getting the larger exhaust and using the silencer. I think it fits my application very well. It's a $50 part and it will allow me to use one exhaust for two engines. Even if I loose a little power now, it will be worth it in the end.

I think this will work for me unless of course someone can point out a flaw in my logic.

[FRpilot]

obx muffler.

[240Degrees]

well think of it like this. i BELIEVE(and someone correct me if im wrong) that the N1 single is a one piece catback, meaning it will cost more to ship. The N1 dual is 2 piece (i know for a fact), so it will be less to ship. If you go N1 single, shipping will be more, AND you still need to get the silencer ($50 or so), even though the exhaust is cheaper w/o shipping. The N1 Dual is more expensive, but cheaper to ship and it's pretty quiet so you don't need silencers AND it's a good exhaust for N/A and good when you go turbo because it's 3 inch piping also.

According to Enjuku Racing's prices:

N1 Single(389)+silencer($50)+shipping(varies, let's say $10-50 more than N1 Dual=$449-499
N1 Dual(499)

So it may cost up to 50 bucks more for N1 dual or cost the same. Check on the shipping prices from where you're buying it from. I don't know the shipping prices. They aren't factored in, but what IS factored in is how much MORE shipping would cost for a 1 piece. Sorry if that's confusing.

[BeteNoir]

Or you could go to a race shop that does mandrel bends on exhaust. The custom fab will cost around the same (installed) as the cost of the n1 + shipping.

Has anyone tried the Megan Racing (http://www.meganracing.com) cat-back?

[phatkorean]

Shipping costs don't concern me but I'll tell you what does. Here are the discriptions of both taken from SR20swap.com.

---------------------------------------------------
The Apexi N1

In the N-1 Endurance Race, efficiency is everything. With that in mind, the N-1 exhaust systems were born to satisfy the want for quick throttle response and to effectively handle the rigorous demands of high-horsepower engines. The pipes were engineered with the aid of sophisticated CAD systems to develop the straightest possible lines and least number of bends. The straight-through canister projects from the car at an angle, which helps smooth the exhaust flow. The canister is built from SUS 304 stainless steel and features a 115mm tip with aggressive style. 75mm / 85mm coated mild steel piping for turbo-charged cars.

Now the Apexi N1 Dual

N-1 Dual Mufflers are a variant of the popular single-tip N-1 Series Mufflers. The N-1 Dual piping splits into two smaller diameter pipes just after the catalytic converter and flow into a pair of 120mm canisters. The canisters are polished off with aggressive 90mm tips. The use of smaller piping diameter helps retain more mid-range torque. The Dual N-1 does not sacrifice peak horsepower because the dual pipes can handle more exhaust gas volume. Piping is treated with high-temperature titanium particle coating, and the canisters and tips are constructed of polished SUS 304 stainless steel.
-----------------------------------------------------

I'm going to assume that both exhausts are created using the same process (the mufflers and pipes are made from the same material and coated with the same high tempt coating) Now I'm a little concerned at the use of mild steel. I live in Northern Virginia and in the winter time salting the roads is a way of life. I wouldn't be too happy if my $500 exhaust began to rust. Will this high temp coating help to protect my exhaust? Can anyone else on the east coast vouch for the quality of these exhausts?

[s0ldats]

Originally posted by misnomer
Issue with the n1 dual, pacman? Care to share why rather than pass around insults? The N1 dual is probably the most popular exhaust for the 240sx, couple that with a high flow cat and you'll be in good shape.

if i'm not mistaken, i'm with stupid means he shares the same opinion as the other person, in this case hookedup240. so he has no issue with the n1 dual if my theory is correct.

[phatkorean]

Great, I just talked with JGYCustoms and one of the mechanics there recommened the HKS HI Power over the N1. He said the N1 was more for budget minded tuners and the HKS was a better overall exhaust AND it comes with a silencer. I thought I had my mind made up, but now I'm not so sure. I'm not concerned about the cost of the exhaust, I just want the best one I can get.

[Dousan_PG]

Originally posted by phatkorean
Great, I just talked with JGYCustoms and one of the mechanics there recommened the HKS HI Power over the N1. He said the N1 was more for budget minded tuners and the HKS was a better overall exhaust AND it comes with a silencer. I thought I had my mind made up, but now I'm not so sure. I'm not concerned about the cost of the exhaust, I just want the best one I can get.

what do they base their assumtions on?

LETS SEE A DYNO

haha
they are just giving their PREFERENCE, unless they can back that comment up with some SOLID facts, its all bs.

silences are for babies

[phatkorean]

No need to insult me by calling me a baby. I posted my reason for wanting a silencer. Besides, you're just giving your PREFERENCE, unless you can back that comment up with some SOLID facts, its all bs.

[Dousan_PG]

Originally posted by phatkorean
No need to insult me by calling me a baby. I posted my reason for wanting a silencer. Besides, you're just giving your PREFERENCE, unless you can back that comment up with some SOLID facts, its all
bs.

exactly
so your still at square 1



i didnt call you a baby

do you HAVE silencers? no, you dont even have an exhaust yet. so how can you be a baby? IDIOT. hahaha..there, that was calling you a name. :rolleyes:

instead of starting to pout right now and getting your panties all twisted up my me, why dont you do more resaerch and dig up sound clips and dynos rather then looking for handouts on questions that have been posted for many times

btw, i have a N1 dual. for temporary. changing again shortly :D





HAHAHAH
you dont even OWN a 240sx yet! hahahaha
why not focus on the car before the mods, eh?
typical newb...buy 240sx
get a sr20det

i/h/e right? :p hahaha

im in such a nasty mood today. :D

[phatkorean]

It is so easy to be rude over the net isn't it? If I want to be belittled I'll know to turn to you.

People like you give real enthusiasts a bad name. Just look at your grammar. It looks like it was written by a 10 year old boy who only cares about tuning because of Initial D and The Fast and the Furious.

Here I am just trying to get some info and all you can do is shout insults. I don’t feel the need to defend myself to an uneducated person but if you want to continue with this discussion, send it to me personally and don’t clutter up the boards.

[Dousan_PG]

Originally posted by phatkorean
It is so easy to be rude over the net isn't it? If I want to be belittled I'll know to turn to you.

People like you give real enthusiasts a bad name. Just look at your grammar. It looks like it was written by a 10 year old boy who only cares about tuning because of Initial D and The Fast and the Furious.

Here I am just trying to get some info and all you can do is shout insults. I don’t feel the need to defend myself to an uneducated person but if you want to continue with this discussion, send it to me personally and don’t clutter up the boards.

we all know i have bad grammar. that's no new story here. i also mxi up wodrs like thsi often from typing. nothing new, son.

haha
use the serach mode
there have been sound clips posted
go to the reviews section and find info on them

fast and furious? haha..you silly newbie!! hahaa..you know NOTHING about me or what i do OR how long i've owned my car and what modifications are on it.

sonny boy, go get your 240sx, put your SR20det in it, make your 250 rwhp and have fun.. join the rest of the bandwagon jumpers too. i heard they found these cool cliffs to jump off.


nah i have fun seeing you get all riled up. makes my day

oh and the n1 dual vs hks vs n1 single vs gp sports vs whatever else, DISCUSSED TOO MANY TIMES

same goes for the 2.5 or 3" piping threads

go search SEARCH search lad.

[phatkorean]

Hmmmm, the HKS exhaust has 85mm piping which is about 3/8" wider than the Apexi exhaust. Plus the HKS exhaust comes in separate parts so if there where any damage to one of the sections I wouldn't be stuck replacing the whole exhaust. Even though it is more expensive, shipping is cheaper and it already has a silencer included. It looks like the price (including shipping) for the two would be about the same, but HKS has some better benefits. I want the silencer until I have an SR20DET and with the turbo I'd be able to do more with a larger pipe as opposed to a smaller pipe. Either way I don't think I can go wrong with my choices here. Apexi or HKS, they're both great companies with great products. I'm sure I won't be disappointed with either product. I have at least another day to decide so any last minute input would be great.

[Dousan_PG]

fyi
power wise, with a silencer, on NA car..it still feels slow
remove it and it does flow better
proof is on the dyno. :) my friend tried his. wow.

with turbo..i read on FA some guy lost like like 43 HP w/ the silencers. here's that thread:

http://forums.freshalloy.com/ubbthreads/showflat.php?Cat=&Board=UBB9&Number=67587095&page=1&view=collapsed&sb=5&o=&fpart=1

ah scott said about 8 hp (est) for NA application


apex n1 is one piece
dual is 2 peice

dual shipping SHOULD be cheaper then n1 single

[phatkorean]

I only plan on having the silencer on until I put in the SR20DET engine. Then the silencer comes off. I want the silencer because I don't want my exhaust to be too loud on the NA engine. If the sound isn't too loud with the silencer off then I'll just leave it off completely.

I'm not too concerned with the power of the car right now. I'll wait and deal with the power once I get the turbo engine.

[MacDrevi0us]

wait is misnomer saying that a 3" is bad on a N/A motor? is that really tru?

[ZenkiSilvia]

I would go for Blitz Nur Spec. It sounds good and looks decent. Wait sorry it sounds MEAN and looks good. =]

Maybe try the Fujitsubo 3'' or Greddy Power Extreme 3''. I would go with 3'' if you want a turbo later. I hear Greddy is pretty quiet due to it's nice resonator. project nissan has it for under 500 now as a special.

Goodluck!

[[email protected]]

i got a Apexi N1 evolution new at the apexi garage sell for a dirt cheap price so thats why i choose the apexi n1 exhaust haha its a pruuuudddyyy nioooce exhaust system was gonna go with a buddy club spec II crazy ass straight thru 3 in piping to a 4 inch tip haha bet that shit is good id say buddy club spec II would be the best bang for your buck.........375 to 400 bucks.

[PhoebusApollo]

N1 Dual! Mine made my friend so jealous he replaced his Mazda Speed RX7 exhaust with Apex'i.

You can get it shipped to your door for $600 now from Phase2. They had it to my door in like 5 days! I thoroughly recommend.

I would find out what his frickin mark up is for the HKS. 9/10 shops mark up HKS because noobs get a boner seeing something in a shop that was in Gran Turismo... "OH MY GAWD ITS THAT BITCHIN EXHAUST I PUT ON MY (IMAGINARY) CAR! I GAWT LIKE MAD BURNOUTZ WID IT! LOLZ!"

Oh and unless you're going to make a run at DEVLSH over at Exvitermini you're not going to push enough exhaust through it for 3/8" to matter. And really the pipe is I think 2.5" in the N1 Dual but it's two pipes almost immediately behind the cat (which you'll find out isn't really a cat!). You should really be more worried about who has better welds, how much does each option weight, listen to people who've had the exhaust and are they seeing rust anywhere, what are both exhausts made of.

[PhoebusApollo]

we all know i have bad grammar. that's no new story here. i also mxi up wodrs like thsi often from typing. nothing new, son.

haha
use the serach mode
there have been sound clips posted
go to the reviews section and find info on them

fast and furious? haha..you silly newbie!! hahaa..you know NOTHING about me or what i do OR how long i've owned my car and what modifications are on it.

sonny boy, go get your 240sx, put your SR20det in it, make your 250 rwhp and have fun.. join the rest of the bandwagon jumpers too. i heard they found these cool cliffs to jump off.


nah i have fun seeing you get all riled up. makes my day

oh and the n1 dual vs hks vs n1 single vs gp sports vs whatever else, DISCUSSED TOO MANY TIMES

same goes for the 2.5 or 3" piping threads

go search SEARCH search lad.

Yeah! Rook how he sperred Godzilla!

[kandyflip445]

Are you seriously trying to give advice to a post over a couple years old? :wtf:

[NISMO240SXXX]

WoW!!!:rl:
:ughug: :wackit:

[PhoebusApollo]

Hahaha, in my defense I wasn't the one that started posting to a 2 year old thread. I just didn't catch it that the dufus above me did.

[Phlip]

Hahaha, in my defense I wasn't the one that started posting to a 2 year old thread. I just didn't catch it that the dufus above me did.
Yeah, but that doesn't make you look like any less of an ackjass for posting in it the way you did.
There are at LEAST 3 active threads involving exhaust, I know because I have posted in all of them. I am locking this one now.