what size of exhaust for sr20ve

[Civilian]

N1 barrel = NOISE...

i recently changed my barrrel from an S.R. N1 style jasma barrel to an oval shape nismo barrel and my car gone from VERY NOISY to only noisy when vvl activates...

[Chiney]

come on guys
educate me

apexi n1 ?
mandrel bends?

wat exhaust system u have smiley?

[Civilian]

normal 2.5" mild steel pipe, crush bent with one resonator and a nismo oval shape barrel, when u see me to collect the ballast, u'll hear how it sounds...

[Chiney]

iight cool den

[YDA Auto Accessories]

chiney let me hear it too nah man.i want to run out my exhaust like weekend and thing

[Chiney]

wat u running?

[streetsleeper2]

Chiney, I have an apexi n1 barrel. Its very quiet when not in vvl but when those big cams hit it gets really really loud.

[YDA Auto Accessories]

chiney i running a vvl

[Chiney]

well at that kinda rpm..i wud expect to hear anything bawling..

i jus dont wanna be crusing around with a brap brap noise..

[KrAzYBoY]

Chiney, I have an apexi n1 barrel. Its very quiet when not in vvl but when those big cams hit it gets really really loud.

What car this in? Remember he want a system for a Wingroad, not a Primera or B14, (I dunno if, or how different the system is in each car)

[Chiney]

streetsleeper2 true with wat he says

wat size u running from front to back?

i`m thinkin of 2" from the extractors to the resonator and then 2.5" to the exhaust..

[streetsleeper2]

Ihave it on a primera.
2.25" right through. The 2" would just defeat the purpose of the 2.5

[Chiney]

these engines dont require 2.5 as is u know
jus leaves room for upgrade

i`m subjet to be corrected

but more than likey its 2.5 for me

[Zed Sqd]

nothing more than 2.25 mandrel bent would be needed once u remain relatively stock, remeber you dont want the exhaust to flow too freely

thee max i'd go is 2.5 with some serious mods

correct!

basics...
for a slightly modified system from just few bolt-on upgrades, you should keep with the 2.25" pipe. this is important to maintain a proper exhaust gas velocity to "suck out" the exhaust gases from the headers. go too big and velocity will drop and you wont get as much power. 2.5" is good for heavier upgrades.

avoid as much bends as you can in the piping to muffler as they restrict flow. the straighter the better. try to create as little backpressure as possible. mandrel bends are much better than crush bends and are less restrictive to gas flow. the same for a perforated core, round, straight-through flow muffler as opposed to an offset, oval one. the longer the muffler/resonator, the more noise reduction. gradually move from the header diameter size (probably 1.75") to the 2.25" outlet at the muffler tip. this is also necessary to create suction. e.g. for NA engines, 1.75" headers, to 2" downpipe to catalytic converter to resonator, to 2.25" striaght out to the muffler <--open to correction.

[Zed Sqd]

My stock exhaust is 2.25"

Hmmmm. On what car with what engine?

...wat exhaust to u guys recommend for a low tone..not the brap brap effect ??

go with the 2.25" pipe, use a long resonator, go with the perforated core, round, straight-through flow muffler. yeah you will get noise with this setup, but that is the result of a straight flow setup (can't fight that when you want horsepower), but this is where the long resonator comes in. e.g. i think the resonator from the Civics are long and give a nice tone. the resulting system is one that is not as loud and noisy as the others, but also has a nice low tone.

[Chiney]

thx man!!!!!

[KrAzYBoY]

My stock exhaust is 2.25"

Hmmmm. On what car with what engine?
ZV-S Wingroad

[Zed Sqd]

KrAzYBoY, NEO VVL with M6?

what size the headers look like? and does it follow a 4-1 to the exhaust tip or a 4-2-1?
tryin to get an idea of what Nissan was thinking when it was pushed out. like how much room they left for modifications or was the intention to market a "buy-and-drive" beast

[Chiney]

engine bought and paid for

[KrAzYBoY]

KrAzYBoY, NEO VVL with M6?
YEAH!

what size the headers look like? and does it follow a 4-1 to the exhaust tip or a 4-2-1?
tryin to get an idea of what Nissan was thinking when it was pushed out. like how much room they left for modifications or was the intention to market a "buy-and-drive" beast

This, i do not know The original heat shield is blocking the headers though, but i will have to find out.

[Zed Sqd]

Any updates fellahs?

speedfreak44, by chance your friend still has the QG18 exhaust system lying around? I'd like to get some details on it.

[Chiney]

not yet bro
i am currently running the stock gq15 piping and i wont lie

it kicking up a real storm
car REAL wokin!!

[speedfreak44]

Any updates fellahs?

speedfreak44, by chance your friend still has the QG18 exhaust system lying around? I'd like to get some details on it.

sry for the late reply, will ask him today

[YDA Auto Accessories]

Any updates fellahs?

speedfreak44, by chance your friend still has the QG18 exhaust system lying around? I'd like to get some details on it.

nah man i left it by the muffler guys when i ran out my exhaust

[KrAzYBoY]

come on guys
educate me

apexi n1 ?
mandrel bends?

You can also tr the jasma barrels.

[Zed Sqd]

mandrel bends.....definitely.

well i ASSUME the loud noise will be due to the wider outlet on the N1 than the inlet.
i have a magnaflow (also straight through) but 2.25 inlet and outlet <- supposed to replace the loudness with a deeper rumble.

will send an update and post a detailed pic when it's installed month end.

[triniboyb25]

hey i am looking to buy the n1 cams, where can i GET THE N1 CAMS to but?????

[Anil_Sooknanan]

I got the cams for sale