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don't really have sound clips, but I've got a video of me goofing around with my old GTS on a motorkhana day.

http://video.google.com/videoplay?docid=-3954516175113564220

mods: fujitsubo mandrel bent stainless extractors and a 2.5" exhaust with a "straight thru" cat, black widow resonator and a magnaflow muffler.

  • 1 year later...

Okay just hear me out please

sorry to do this eug. im aware that this question may have been answered but i have been on sau since 8.30 pm till nowlooking for my answer and cant seem to find the one for the exhaust i want.

I like loud cars i mean loud 3 blocks away.

so on my na i was thinking 3"inch the whole way with a hiflow cat and 4 1/2 inch cannon

1. what type of noise will i get???

2. is it the way to go for loud sound?

3. will the hi flow cat make it louder?

i have a R34 25GT

Edited by Eug
added search tags in topic description

1. the type of noise will depend on the material used. i would guess that something light like titanium would give a metalic sharp sound, whereas something like mild steel will give a deep growl.

2. the muffler type; straight pipes, twin pipes, single cannon, etc.

3. no cat/gutted cat will make it louder, a cat will add to the muffling effect. regardless i'd say the effects of cat or no cat would be minimal. what you're after can be achieved via cat back.

what type of loud are you after? think about the metal's properties and density.

my suggestion, if you're not concerned with too much power loss; a 2.25" exhaust with a 4"/5" stainless steel/titanium exhaust.

i'll let the thread stay, on the condition that you alter the title and the sub title with appropriate headings and tags so others can find it for future reference :D

cheers

eug

1. the type of noise will depend on the material used. i would guess that something light like titanium would give a metalic sharp sound, whereas something like mild steel will give a deep growl.

2. the muffler type; straight pipes, twin pipes, single cannon, etc.

3. no cat/gutted cat will make it louder, a cat will add to the muffling effect. regardless i'd say the effects of cat or no cat would be minimal. what you're after can be achieved via cat back.

what type of loud are you after? think about the metal's properties and density.

my suggestion, if you're not concerned with too much power loss; a 2.25" exhaust with a 4"/5" stainless steel/titanium exhaust.

i'll let the thread stay, on the condition that you alter the title and the sub title with appropriate headings and tags so others can find it for future reference :D

cheers

eug

Cheers eug

ah to be honest the sound im searching for is something that is loud sounds mean. that can be heard from a fair distance lol. lets just say LOUD!!! will the 3 inch straight through with the 4.5 inch cannon deliver on that??? after you mentioning the metal diffrences id probably go mild steel. thanks buddy

with a 3 inch you'll loose far to much low end that you wouldn't be happy with it, you can acheive the sound your looking from a 2 1/2 inch cat back with no resonater and a straight threw muffler and a cannon.

I had this set-up for a week on my Na 33 a few years back and it only lasted on the car for a week for me because it was way to loud could be heard from 3 + streets away.

Also remember an na will always be way louder and have higher pressure out the exhaust as there is no turbo to restrict the flow and rob power from the exhaust heance quietening it,

Sizing is also important in na's as you need to keep better backpressure as with a slight bit more backpressure the exhaust will actually flow better, this is not the case in a turbo exhaust as you just want all your exhaust pressure kept in the manifold into the turbo and then you need the freest flowing exhaust you can get.

I think Cara on here has a 3" system on her 34 and it sounds tough as, although her car is used for a lot of dyno comp's so having a bigger system will help as she no doubt gained a bit of high end power you'll almost never use on the street, she will have lost some low end torque and for a street car you want as much torque as u can get :D

hope that helps

Cheers Jarrod

Cheers eug

ah to be honest the sound im searching for is something that is loud sounds mean. that can be heard from a fair distance lol. lets just say LOUD!!! will the 3 inch straight through with the 4.5 inch cannon deliver on that??? after you mentioning the metal diffrences id probably go mild steel. thanks buddy

Hi R34TRK,

My NA 33 had a 3" cat-back system on it when I bought it... it's a 3", mandrel bent stainless steel system going into 2x 3" cannons. Let's just say LOUD!!!! I frequently set off car alarms in the carpark at work, just by driving past at well under 3k RPM. I've gotta say though, I felt it was lacking a little down-low torque, so I've now got a 2.5" cat-back, but which goes into the same twin 3" cannons... sounds almost as loud, but much more low-down torque. It's not for everyone... my GF finds it a little too loud... but ah well! with the 3" -> 2x3", it used to drone like crazy... never really bothered me but most of my passengers got sick of it pretty quickly! Now the drone is much less... still there at certain RPM, but not too bad.

It's all up to the individual... I got EPA'd with my original exhaust... lol 90dB? pfft! no way! I got a 2.5" -> muffler -> 2.5" tip made up... that was bang on 90dB and it felt like my engine was missing compared to the old one!

Droning sux for passengers in a skyline as if you sit in the back your closer in the exhaust so its way louder.

Though i might also mention even after i changed my 2 1/2 inch system to a 2 1/4 system i had it tested and pulled 99DB which is 3 times louder autible noise than a 90Db exhaust system. you can make any exhaust size loud you just have to know what to and not to include on the system and how to make it flow, and exhaust shop should be able to make it up for you.

the only thing im scared of is that the fact everyone is telling me that i will loose way to much power.... i dont mind a bit but i still want the car to have some go. but then i think about the noise and how i want it loud.....

cara has a 3 inch and she hasnt said anything about way to much power loss

i have mates that have had 2.5 inch and it doesnt sound a whole lot diffrent, not what i expected any way thats why im thinking 3..

with a 3 inch you'll loose far to much low end that you wouldn't be happy with it, you can acheive the sound your looking from a 2 1/2 inch cat back with no resonater and a straight threw muffler and a cannon.

I had this set-up for a week on my Na 33 a few years back and it only lasted on the car for a week for me because it was way to loud could be heard from 3 + streets away.

Also remember an na will always be way louder and have higher pressure out the exhaust as there is no turbo to restrict the flow and rob power from the exhaust heance quietening it,

Sizing is also important in na's as you need to keep better backpressure as with a slight bit more backpressure the exhaust will actually flow better, this is not the case in a turbo exhaust as you just want all your exhaust pressure kept in the manifold into the turbo and then you need the freest flowing exhaust you can get.

I think Cara on here has a 3" system on her 34 and it sounds tough as, although her car is used for a lot of dyno comp's so having a bigger system will help as she no doubt gained a bit of high end power you'll almost never use on the street, she will have lost some low end torque and for a street car you want as much torque as u can get :(

hope that helps

Cheers Jarrod

cheers mate

but when it comes down to it a 3inch all the way is gonna be louder than a 2.5 inch yeh????

Edited by R34TRK
cheers mate

but when it comes down to it a 3inch all the way is gonna be louder than a 2.5 inch yeh????

louder, absolutly!!!! My 2.5" all the way is 90dB, legal, and sounds like it isn't even there compared to my old 3" to twin 3" cannons. VERY LOUD. There was a noticible low-down torque gain with the smaller exhaust... not that it was un-driveable or anything, but it felt like the power was shifted up the rev-range a bit too far for my likings.

louder, absolutly!!!! My 2.5" all the way is 90dB, legal, and sounds like it isn't even there compared to my old 3" to twin 3" cannons. VERY LOUD. There was a noticible low-down torque gain with the smaller exhaust... not that it was un-driveable or anything, but it felt like the power was shifted up the rev-range a bit too far for my likings.

welll im gonna give 3 inch a go see what happens.....

has any one on here got a N/A with 3 inch all the way and cannon

love to here it

thanks

I have a set of copy extractors, 2.5 inch mild steel exhaust, and a cannon of some sort on a RB20DE Cefiro. It's loud.

No loss of power.

I had to put in a hod dog type resonator though as it had a reverbaration at high RPM.

I have a set of copy extractors, 2.5 inch mild steel exhaust, and a cannon of some sort on a RB20DE Cefiro. It's loud.

No loss of power.

I had to put in a hod dog type resonator though as it had a reverbaration at high RPM.

2.5 inch is diff fromm 3 inch man

i want to see some one with N/a Running 3 inch through it

  • 2 weeks later...

Runnin a 3" Titanium Cat back w/straight pipe, easy fix for the droning is called volume on the stereo. I know I gained power from putting this exhaust on but I also have a pod filter and MSD Sport Compact Ignition box with Blaster coil, Iridium plugs and always keep cap and rotor fresh and also 8.5mm Super conductor wires. Car comes out Faster since the cat back was added. Oh yes it is loud as F*** But sounds so sweet.

Hows this, my old car 2.25 inch with a 4 and a half inch cannon.

drive by up to the speed limit ;) and then about 200m down the road double clutching shows you how loud mine was for it's size without compromising down low torque.

http://www.youtube.com/watch?v=Svf7hO7PjEo

So you can be loud AND have the peace of mind knowing that it is going to good use :)

pretty loud man... but wack on a turbo man.. u will get volume...and sound like a jet... instead of.

brrrrrrrrraaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbraaaaaaaaaaaaaaaaaaaaaaaaaaaaaabraaa

aaaaaaaaaaaaaaaaar

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