what kind of y-pipe can i get with cats?what a good brand?

 

huh? are you asking what aftermarket y pipes you can purchase to use in conjunction with your existing catalytic converters? or are asking if aftermarket Y pipes come with cats attached to them?.. they do not, but I really have no idea what you are trying to ask.

exhaust system - headers -> two catalytic converters -> y pipe -> mid pipe with resonator -> muffler

 

do y pipes come with catalytic converters or do they attach to them?first time modifying a import or 350z..use to own a few mustangs and on them the x pipe or h pipe was the only thing between the headers and the catback and they either had the cats attached to them or they didnt..sorry about the question or how i wrote it down

 

it's okay. catalytic converters are separate pieces of equipment on our car - they connect from the headers, to the the two parts of the Y pipe.

when you are in the market for a new Y pipe you just slap it in place of the old Y pipe, your cats remain intact.

you can purchase high flow cats or test pipes (empty pipes that completely replace the two cat converters) if you want additional power.

 

ok so does replacing the y pipe with an aftermarket one do anything?
and what is a downpipe?

 

down pipes are for turbo setups. you don't need to worry about it, your car doesn't have one.

03-06 Y pipes are a little restrictive, I would say replacing it with an 07-08 HR or a better aftermarket one provide some pretty respectful gains. if you are not going to be purchasing an entire catback system (y pipe or X/H pipe, mid pipe(s), muffler(s)), and are only interested in a Y pipe, I recommend the Motordyne XYZ pipe.

 

my car already has the nismo catback and nismo intake so i was just looking for a y pipe..but i dont kno what brands are good or expensive..lookin for a good brand but kinda cheap like not to expensive

 

and what do you mean a little restrictive?

 

if you have a full nismo catback then you already have a nismo y pipe. that set up is pretty mild for gains, but gains from exhaust aren't massive to begin with.

what year is your Z? the best bang for the buck for you at this point is more then likely a plenum spacer. I would forget about high flowing cats or test pipes with the nismo Y pipe - it is prone to cracking them, lots of reported issues with that happening.

 

how do i know if it has the y pipe or not?never really checked because that how i bought it and thats what the guy said.
and its a 04. What do the plenum do and where does it connect?

 

https://my350z.com/forum/2003-2009-n...questions.html

time to study up about your car.

the plenum is the piece that is connected to your air intake tube. it's a part of the intake system. there are spacers for it that increases the volume of air it takes in and spreads it more evenly - creating more power.

 

u need to read...alot...and get under your car and look for yourself...if u have a nismo cat-back on the car then it has the nismo y pipe already...and downpipes as stated are for turbo cars..u really need to learn alot by reading around before postiing and doing anything to your car

 

thats waht im goin to do..thanks for all the help i appreciate it..