which is better for an n/a fc.....im debating over the corksport single or the apexi n1 dual .... i ordered the corksport and cancelled it the day they got it in from being on back order i can still call them up and reorder but the reason i canceled is i changed my mind and im seriously considerin the apexi dual....since i have about a 940 budget for the car and im tryin to get good parts and not slack but the corksport is sooo much cheaper...its 340 with silencer and shipping the cheapest i can get the apexi with silencers and shipping now is for about 640....im reaallyyy unsure of wat to get so if ne of u can persuade me to one side so i can order and forget about it...post pics if u can... https://www.nopistons.com/forums/pub...1047683561.gif https://www.nopistons.com/forums/pub...1047683358.gif

thanx alot

I had the Corksport single on my NA and it sounded like **** and was ridiculously loud. As for single vs. dual, that's more a matter of opinion at least with looks. There are single systems that flow as good or better than dual systems and vice versa. The CS flows good, will last a long time, and is cheap but I just couldn't take how loud it was and the fart can tip didn't look right on my NA.

I'm all about the cheapness. If I can't decide between one thing and the other, I choose the cheaper one.



If you're like me, you'd choose the cheaper one. But that's just me, I'm not sure about the performance gains of one over the other.

I'm definitely with you there Baldy. Considering its full polished stainless, you can't beat the price of the CS. I should mention that I was running no cats when I had it installed.. had an RB pipe with presilencer. If you have your cats, I'm sure it would sound fine.

single is generally gonna be a little lighter



dual should be generally a tad quieter



flow depends on other things (cannister design, piping etc etc)



mike

if u look at a pic of the apexi dual u can see that there is a muffler before the tipp...im guessing since the muffler is a straight through design they use the premuffler i guess u could call it to silence it there for i might not even need the silencers...and i could get it for 570 from rxecret7.com which is the only site ive seen selling the dual by itself without the silencersbut with them its just about the same as neone else....but so far the other stores ive checked included the silencers so its without or with i guess

true j9fd3s...are u sayin the dual be quiet without the silencers cuz if i can,, i wont get the silencers...i just want it to be quiet ....not toooo quiet ..u know enuogh to know that theres a rotary about to kick ur ass right behind u lol

To be honest, I haven't noticed a huge difference in noise from the NA dual over the single, now I have never heard the corksport exhaust, so I can't comment on that, the dual was a bit deeper in tone, but I dunno that it was that much quieter.

N1 dual is loud! RB has the best sound, IMO.

Yes it is.

I have a Apexi GT Spec w/ silencer for sale for $300 + shipping. PM me if you're interested.



PICS

I was planning on going for a single. I wanted to buy just a muffler, and have a shop fab the rest, to cut on cost (cheap shop, in and out real quick).



Any recommendations on a decent SS muffler? RB is too damn expensive for me.

I'm currently running with RB headers+presilencer, and stock half-busted catback, and it's pretty loud, IMO. And sounds like ass. FCManiac, any idea how much louder CS would be than my current crap setup?

If you look at the muffler design of the CS and the fact that it has no resonator before the muffler, you'll understand why its so loud. Generally, the bigger the muff and the packing materials, the quieter it'll be. I think that is why most dual systems sound quieter. I imagine the GT Spec like Nemesis is selling is quieter than the N1 because the muffler is bigger and it looks to have a resonator... I'm no expert but that CS was loud as hell and you could tell why just by looking at its design. Its meant for high end power anyway, not noise reduction.



On my daily driver, I had a system built that performs very well and is quiet too. I got a straight through muffler and resonator by Magnaflow from bigexhaust.com. You can get a muffler there all stainless for $70-80. If you want to reduce the chainsaw rotary sound, have them weld in a resonator too. You can probably build a decent single system with resonator for around $200-250.

Actually all of you are wrong.



Exhaust tips calculate directly into horsepower while size calculates into torque.



A bigger can = bigger torque



multiple exhaust tips = more hp



And you people call yourselves car enthusiasts. I laugh, go watch TFATF another time.

cool, that's what I was looking to do. Do you remember what you got from magnaflow? Or should I just pick something?



I was thinking 2.5" in (with 2.5" from the presilenser, if the shop has it available), and I don't know what exit size. Is that too big for n/a? Should I go 2.25", or is it not that big a difference?



And I don't mean to ***** this thread, but is it bad to have everything welded up, rather than use hangers?

You need to measure and see how much room you have in there. I didn't get to that yet. I am thinking about a custom dual system with two of part # 14615. The system would be a 2.5" collector flanged off the presilencer to dual 2.25" pipes with a resonator before each muffler. I don't think you'd need more than 2.25 for NA. I'm not sure what you mean by not having hangers. On the DD, I took the muffler, resonator and tip to a shop and they welded everything including a cat flange and hangers and installed it all for $140 with 2.25" piping.



Here's the muffler I was thinking of: 14615

in my opinion duals are a bit louder and deeper, and look better to be more exact. i also have a single apexi dunk muffler that sounds pretty good single exit

I personally think the dual is better than a single, also it give the car a nice look to it too. Just my thought.

I am running RB dual from Mazdatrix on my 79 and love it.

When i was looking into this debate years ago, for the carburated cars, single gave you a little more low end, and duals gave you high end.

I am going with the RB dual from Mazdatrix on my 90 GTU's as soon as it comes out of the paint shop.

I didn't really care to read all of this but if your asking about what sounds better, looks better(oppinion ofcouarse) then you have to go with duals. Two mufflers of the same cuality of the corck sport(BTW quality is not ment for the SOUND of it only the manufacturing) it will sound much better since there are two mufflers doing work on the sound.



I love the look of a dual specialy when you don't have to say "yeah I converted to dual" You can just say it is like stock but better. https://www.nopistons.com/forums/pub...IR#>/smile.png



APEXi N1's wouldn't be my choice because they are just rice cans with large tips added to large pipes. I would say HKS, Greddy, Borla, And finally the best one of all for sound is Racing Beat mufflers.



You can't beat the BEAT. https://www.nopistons.com/forums/pub...DIR#>/wink.png



Santiago



https://www.nopistons.com/forums/pub...#>/biggrin.png

What I meant was, not having the rubber donut hangers. I watched the welder do duals on a Monte Carlo, and he used this small strips of metal with holes in it. He welded on end to the exhaust pipe, and welded the other end to somewhere on the car. I figured this looks more durable, considering rubber can get old. I know it's more permanent than rubber hangers, but I figured a welder can always remove it. Of course, I know very little about welding and metal work.

Does that mean that a dual with 1 tip per side is going to get me less hp that a dual with 2 tips per side will??



or does it just relate to number of cans? https://www.nopistons.com/forums/pub...IR#>/dunno.gif



https://www.nopistons.com/forums/pub...>/beerchug.gif https://www.nopistons.com/forums/pub...DIR#>/beer.gif

would single give more backpressure, for S4 aux. ports?