As for air flow, I have a CAI, 62mm TB, 4-1 Header, 2.25 Exhuast, High-flow cat, and a flow-through muffler. I love how my car runs, but I sort of want to put a test pipe between my cat and my muffler. Will it make it quieter overall or only make it deeper? And will it do anything performance wise? Will I get some back pressure; like any? And it'll still be the same at high rpm's right; as in no restriction? The test pipe is 2.25 by the way.
http://www.cardomain.com/ride/2208703
As far as noise and tone is concerned its going to make it louder and more raspy, expecailly seeing as you dont have a resonator and your mufller is straight through rather than a dynomax or the type. Not saying what you have is a bad set up cuz its what I had on my Z but if you take the cat off and put on a test pipe its only going to make it more loud and raspy.
As far as performance your not pushing enough exhaust out now for it to make a difference and its going to screw with your o2 sensors unless you have a o2 sim. already hooked up so if anything it might decrease horsepower, and no you will have pretty much a backpressure that is non existant.
USJDM.....GOT YA B!TCH! wrote:As far as noise and tone is concerned its going to make it louder and more raspy, expecailly seeing as you dont have a resonator and your mufller is straight through rather than a dynomax or the type. Not saying what you have is a bad set up cuz its what I had on my Z but if you take the cat off and put on a test pipe its only going to make it more loud and raspy.
As far as performance your not pushing enough exhaust out now for it to make a difference and its going to screw with your o2 sensors unless you have a o2 sim. already hooked up so if anything it might decrease horsepower, and no you will have pretty much a backpressure that is non existant.
Nooo lol, I was asking about what would happen if I added a test pipe between my cat and my muffler. Not take out my cat and put the test pipe in, but put it in after the cat.
http://www.cardomain.com/ride/2208703
Just keep the high flow cat. Removing it will most likely make you exhaust louder. The minimal gain you could possibly make (maybe 1 or 2 HP) isn't worth the hassel of over-riding the CEL and getting around an emissions check(if you have one where you live).
Removing the Cat for more power is an old "wives tale" left over from the first models of cats, when they used pellet catalyst instead of the monolythic catalyst of today. The exhaust had to flow around the pellets, which were just packed into the case and restricted the gas flow. Monolythic cats have a straight though grid, which barely impeads the gas flow. If you look through a monolythic cat, you can see right through the grid (either square or honeycomb), the gases can flow stright through, just like looking through it.
Ahhh sorry about the misunderstanding. As far as that goes I have no idea. my bad man im sorry.
UMMMM....a TEST PIPE replaces the cat. If your replacing the piping from the cat to the muffler your adding a CATBACK EXHAUST.
There are 2 totally different things that you got confused here man.
Fact still stands....test pipe won't help much.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
Team Vision Racing (aka hypsy) wrote:UMMMM....a TEST PIPE replaces the cat. If your replacing the piping from the cat to the muffler your adding a CATBACK EXHAUST.
There are 2 totally different things that you got confused here man.
Fact still stands....test pipe won't help much.
No, I'm going to put the test pipe behind the cat. A test pipe doesn't HAVE to replace the cat, although I have done that before in the past. I'm not replacing anything at all really.
Lets go from baby steps so more people don't get confused on what I want to do.
Header goes down to a pipe that goes down to my high-flow cat, and then a pipe connects my high-flow cat to my muffler. Somewhere in the middle of the pipe that connects the high-flow cat and my muffler, I want to cut some piping off and put my test-pipe in that spot. I'm assuming it'll make the noise a bit deeper and hopefully a little quieter. I was just asking on what it would actually do.
http://www.cardomain.com/ride/2208703
sorry bout the subject change but how do you like the cams? did they add anything?
dario wrote:Team Vision Racing (aka hypsy) wrote:UMMMM....a TEST PIPE replaces the cat. If your replacing the piping from the cat to the muffler your adding a CATBACK EXHAUST.
There are 2 totally different things that you got confused here man.
Fact still stands....test pipe won't help much.
No, I'm going to put the test pipe behind the cat. A test pipe doesn't HAVE to replace the cat, although I have done that before in the past. I'm not replacing anything at all really.
Lets go from baby steps so more people don't get confused on what I want to do.
Header goes down to a pipe that goes down to my high-flow cat, and then a pipe connects my high-flow cat to my muffler. Somewhere in the middle of the pipe that connects the high-flow cat and my muffler, I want to cut some piping off and put my test-pipe in that spot. I'm assuming it'll make the noise a bit deeper and hopefully a little quieter. I was just asking on what it would actually do.
you can't be serious...........
its really funny when people get frustrated when others don't understand them because they're using the wrong terminology
ok.. baby steps now....
a test pipe is a section of pipe that REPLACES THE CAT anything else is JUST PIPE
they don't make pipes with little laboratories inside that do tests
i'm pretty sure you're talking about a RESONATOR
yes, it'll make the car quieter and deeper sounding, and effect on performance will be minimal
before you get frustrated with those trying to help, make sure you're asking your question correctly and calling your parts by the right name
GREAT thread
After his 2nd post I was just like
?!?
fortune cookie say:
better a delay than a disaster.
This is a test pipe
This is a catback
This is a resonator
And this is a bunny
If you're talking about a resonator it's far from being a test pipe, be careful of what words you use!!!
DaFlyinSkwirl (PJ) wrote:
they don't make pipes with little laboratories inside that do tests
had one on my 89, it told me my car was slow.
JBO Stickers! Get yours today!
I was once told i had a tiny unicorn in my exhaust causing all kinds of problems and taking dumps in my filters.
Damn guys, my bad. When I bought my "test pipe", it was labeled test pipe on the website and when it came into the mail. When I got it, it looked like a mini flow-through muffler so that's what I thought that was it. It's after a year of owning it, that I find out that it is a resonator.
http://www.cardomain.com/ride/2208703
