Aftermarket Exhaust systems

Discuss the RB20, RB25 and RB26 series engines.
Yellow4g63
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I'm starting this because I'm about to track down a Greddy Power Extream 2 that is 80mm piping. I have heard that these are really quiet? Anyone have any other that they think is quiet? Blitz?RSR?HK$?


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xjon
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Apexi dual N1- it was really loud on my KA. On the RB, I can hear the engine more and the exhaust has a nice rumble and does not sound ricey anymore. Check it out anytime since you're local.

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accel junky
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I have the Apexi GT spec but have not cranked it up yet.... any word on how loud/quiet that thing is?

Yellow4g63
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My friend has one on his S13. He still has the stock cat so its not that loud.

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NISMO_RB25
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i am with xjon on the apexi n1 dual. at idle it is very quiet, just a nice pleasant rumble.

s13rb25
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I went the cheap way and got the ssautochrome one. I must say that for 228.48 shipped im very happy with it. it came with hangers, gaskets and bolts. bolted right up. then my friend and I made a 3 in downpipe and it sounds great. low rumble at idle and get louder from there. Going from open stock dp to 3in from the o2 housing back was awesome. its quicker and doesnt sound like a boat at idle anymore. I would recommend the exhaust to anyone who doesnt want to spend alot for an exhaust but wants something perfect for a street car.

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Project240
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My 5Zigen Border Rocket exhaust is loud, a little louder than I'd like (80mm all they way back from the turbo dump pipe), but it sounds very nice. Nice deep burble at idle; when driving around, you can definitely hear me coming, but at least it's not a ricey fart sound. Sounds kinda like half of an old Ferrari engine with a turbo breathing into it :)

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rbsileighty
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Check the vid in my signature link for how a JIC 80mm system sounds on a 20. I think that is about as quiet as you get without becoming restrictive (has a presilenser and both pre/post mufflers are perforated cores).

Here is a Super Dragger kit on ebay from Jarco:http://cgi.ebay.com/ebaymotors...41905

I know these are fairly quiet on FD RX7's... which is an achievement! They are slightly restrictive since they have louvers in the final muffler, but I'd imagine this is the best compromise system.

I have a RS*R GTII system... which I'd imagine is loud since it has no premuffler. I'm going to add a straight through perforated core muffler if I think it's to loud.

gani
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got a tanabe exhaust pretty queit till you get on it

Darius
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What about the Apexi N1 single muffler? I don't really like the look of the dual and the performance probably isn't as good due to the friction losses in the splitter, muffler inlets, and muffler outlets. I know that's a factor of exhaust velocity, but in general the less bends the less head loss.

I'm considering that one ^^ and either the Greddy PE2 (80mm) or the Greddy TT. I had a Greddy SP on my Acura and loved the way it sounded, so I'm partial to Greddy. Does anybody have advice for or against any of these three systems?

Also, where can you buy dump pipe spacers?

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tx_widebody
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I have the Blitz NUR spec r, but havent started it yet does anyone know how those sound???

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nissanman04
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from what i've hear the nur spec is pretty loud. i have the realize tt, pretty quiet at idle and lower revs, nice growl when u wind it out. couldnt tell u what it would sound like on an rb since i wont have mine till spring.

TOPSECRT88
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I just installed the Nur Spec and its LOUD.

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tx_widebody
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but does it sound good, or is it ricey???

Yellow4g63
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I did go with the Power Extream 2 and It was quiet I loved it. I was trying to sell it but now I'm out of state working. If you can get the Power Extream 2 you will love it.

armysweitzer
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HKS Hi power 3.something inch with a 3 inch test pipe. Very quiet, i love it. I never hear anything but motor unless im at very high revs.

-Johann

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rbsileighty
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The link to the JIC isn't in my signature anymore... just fyi

My GTII is really loud... but it might be different for those running a converter... presilenser is definitely on the list of "to do" mods.

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Wulfgang
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Darius wrote:What about the Apexi N1 single muffler? I don't really like the look of the dual and the performance probably isn't as good due to the friction losses in the splitter, muffler inlets, and muffler outlets. I know that's a factor of exhaust velocity, but in general the less bends the less head loss.
According to numerous reviews, both the N1 and the N1 dual have top-of-the-line performance. You just can't get much better, even with no exhaust. Theoretically, the dual will be better than the single. Why? Because head losses due to bends/expansions/contractions/etc. go up with the square of velocity. With 50% more flow area, you decrease head losses by about 56%.

But either way, you won't be dissapointed. The dual will of course be a bit quieter, but if you like the single, get it. The dual has some issues with certain rear swaybars.

Btw, it is interesting you like the look of the single better than the dual. I chose the dual because I thought it looked better than the single. Not so Hondaish.

TOPSECRT88
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tx_widebody wrote:but does it sound good, or is it ricey???
No rice at all. The revv is unbeleivable. Hands down the best deep sounding exhaust ive heard. Extremely high quality. Plus if you buy from http://www.sr20shop.com (which is one of our sponsors btw) its only around $550.00 shipped. At most places it tops $600.00. You wont be disappointed. Although if you dont like loud i would stay away. Even with the silencer in its fairly loud, but eh, i like to be heard when i want to.

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Spazz
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i have the ssac, apexi n1 dual clone. sounds very throaty on the ka.on the rb its a little more quiet, and alot more throaty.the quality on it is so-so, and half the price of the apexi. I had to clean up the welds on the flanges. im happy with it.

Cornloaf
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i have the apex n1 single on mine - i have a video clip and u can hear all the way from idle to bouncing off the rev limiter. http://www.3rdgearvtec.net/And...s.mpg

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Kansei240sx
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I've got the series 2 megan racing exhuast with Full 3 inch piping and two minimal bends to a nice tip.... Its really freaking loud with my KA as of now, but its a smooth rumble and its extremely deep. I cant wait to hear it with the RB25 In.

drift freaq
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I am running the Buddy Club Spec II on my RB25 powered S13 Fastback. Its sick sounding and great for ground clearance . A excellent track exhaust though its a little untame when you open it up on the street with no silencer but I love the low growl it puts out.

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Kansei240sx
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Heres the megan system on my car.




Darius
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Anybody besides acceljunky running the Apexi GT Spec on their RB? The progressive 75-95mm piping on that thing is ginormous. I'm just worried that it will as loud as a bullhorn.

matt_calgary
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Yellow4g63 wrote:I'm starting this because I'm about to track down a Greddy Power Extream 2 that is 80mm piping. I have heard that these are really quiet? Anyone have any other that they think is quiet? Blitz?RSR?HK$?
I have an RS*R Exmag, when I put my test pipe on, didn't even change the tone of the exhaust. Awesome welds and perfect fitment.

When this ***** was on back-order for 6 months from Japan, I was looking at getting the Blitz TT as I heard it was quiet as well. I love this exhaust and isn't a giant fart can on hanging on the ground. The only thing I don't like about it is the two 90 degree bends right after the muffler, I havn't noticed any performance flops because of it though.

240240
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Magna flow with 3" alll the way back and its really not that loud.

s14 2510's
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I have apexi gt spec on my modded rb26 powerd s14 and I just bought RS*R Exmag for my s13. We will see how the two sound come spring. gt spec is huge and little to no bends as is the RS*R.

gawdzilla
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custom modded trust downpipe, into 2.5" crush bent aluminized piping, into stock 1.5" s14 exhaust

oh yea i have a cutout right before the 2.5". pretty loud w/ the cutout open, don't know what it sounds like w/ the cutout closed yet..

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Nameless EJ6
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3" mandrel bent straight pipe, no muffler. :P


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