hey guys, i was just wondering whats the best exhast setup thats not that loud/hp gains?? full exhast from y pip to muffler.
thans jeff

 

Run a search. There are plenty of threads about the "quietest exhaust system." As for me, I have an aftermarket Y, the RT Cat, and a B-pipe with the stock muffler. Sounds just like stock. Hope that helps...

As for quietest aftermarket catbacks...it seems that most people seem pretty satisfied with the sound level of the Apexi exhaust...

 

what about some power gains??? done searches but did get the info i really wanted

 

you will probably get between 8-15 HP gain with the Y-pipe alone. the rest of the exhaust system will give you around 5HP i'm pretty sure. as for torque, there is an equation that has to do with the HP...

 

When I added my Y it made the exhaust rumble a bit, if you want quiet probably the best bet would be to get a custom b pipe with the largest resonator that'll fit from a local exhaust shop.. and a modded 5th gen muffler

 

ok from what ive learned on the org, changing everything but the stock muffler is good for noise as well as performance.

is the stock muffler really better or as good as a free flow aftermarket unit? i dont want to make a bad move by selling my stillen piece

 

go to http://www.motorvate.ca/auto/maxima/...~pipe_dyno.htm
it's got a dyno for the budget y pipe
18 hp average gain and 19 lbs/ft torque gain. for only $165 us dollars $250 canadian
now add a stillen catback for around $650 antoher 12-15 hp and a random tech highflow cat(10 hp?)<----guess. you're looking at 40+ hp
that's waht i'm working on. i'm ordering the y pipe as soon as one of those butt-wipes e mails me back. anyone know anywhere in the us that ships bugget y pipes?

 

ill bend over and take it in the *** if a catback gives 12-15 WHP on a N/A max....and doubtful an RT cat will add another 10...realistically, your looking at around 25-30 to the wheels with an intake/full exhaust setup.

and the most quietest setup would be ypipe -> rt/carsound cat -> bpipe w/resonator -> stock 2k2 muffler

best sounding aftermarket and quietest would be ypipe -> rt/carsound cat -> apexi ws catback

 

is the stock muffler really better or as good as a free flow aftermarket unit? i dont want to make a bad move by selling my stillen piece - bump that please

 

its not as free flowing, but its not that much worse....you'd probably see about a 1-2hp gain with your Stillen over stock.

 

i'm just wondering if its gonna choke up the rest of the exhaust.

if you have a fully modded exhaust system, is a stock 4th gen muffler a bad ending?

 

like i said, itll take an extra .004 seconds to get thru the muffler over the stillen, not causing much loss at all

 

 

yeah i know

 

I am also wondering this. Wouldn't changing everything on your exhast make some back pressure???

 

well modifying by changing exhaust components is usually done to lower back pressure and flow resistance no?

correct me if im wrong but, isnt it better to have some backpressure at low end?

 

Yes it is. That is why a variable capacity muffler is good. It restrics flow in low RPM's to create a little back pressure. Then at higher RPM's it opens up for the increased air flow. Thus always having the right amount of back pressure.

 

Y2k Muffler is good because it keeps the EXHAUST VELOCITY higher in the low end without restricting high end exhaust EXHAUST VELOCITY.

 

Is that not what I said? Or should I have use the term "velocity" instead of "back pressure".

 

yikes

so is the 4th gen muffler not capable of this? i thought our mufflers were also equipped to provide the high points like that..using the baffle.
im baffled.

 

I emailed Cattman, and he said his catback for 4th gens was pretty quiet, but it had gains, so you might want to look into their catbacks as well.

 

Y-pipe, high flow cat, B-pipe with resonator, and a Magnaflow muffler.

The muffler and resonators are what is going to keep your exhaust from not sounding like a ricer.

I got a 5x11 muffler that is 22" long. It's almost the same exact dimensions as stock and very quiet. A low rumble is heard at idle and it opens up nice and deep at WOT.

 

whoa whoa whoa, the second you throw on a Y-pipe, say byebye quiet. The interior cabin noise gets quite annoying.

 

stock muffler- from 4 gen. good or bad

 

Is that noise at WOT or just regular driving , or both?

 

Ok, if you can deal with minimal interior noise get a cattman y and a greddy sp. since the sp doesnt use a straight through design its nearly impossible to hear unless you have your ear up to the muffler.
IF its such a big deal that you cant stand interior noise dont get exhaust. sorry

 

Have anyone applied those temperature wraps on the y-pipes to quiet it down?