View Poll Results: 2.5" or 3" exhaust
Voters: 15. You may not vote on this poll
3" exhaust
#1
3" exhaust
O.K so iv been trying to come to a conclusion of wether a 3" exhaust would be any good with a na setup.. iv read the thread about some of the 5 gen guys going with a 3 inch.. but idk if that realy pertains to our cars being its a dual set-up and what not. basically im looking for some input from some knowledgeable members on this subject my exhasut has fallen apart do to the slam and some rail road tracks and i figure if there realy is a gain to be made from this ill do it now... so yea whats up guyss
#4
Not a good comparison. Cobra is supercharged V8. I have 2.5 from Y-Pipe to Mufflers that are dual 3in straight through design. there are clips on youtube.
#7
I wouldn't consider it "out of the question." Have you checked the dyno threads? ~15whp over the 2.5" Cattman. There are many other things to factor in other than just OD. Build quality is a big one as well. I'd talk to Brian Catts regarding the matter, I'm sure he'd have some quality input. Too many people disregard the 3" for NAs simply because they are stigmatized into FI cars being the only ones needing it...
#9
Supporting Maxima.org Member
iTrader: (16)
Join Date: Nov 2004
Location: Denver, Colorado
Posts: 2,761
What size is your existing catback pipes? I would get a Y-pipe instead, you will get a better kick from that as opposed to going 3" with all the stock exhaust parts up from.
Deus has headers and Y-pipe to go with his 3" exhaust.
Deus has headers and Y-pipe to go with his 3" exhaust.
#10
the xisting size is irelevant being i have to do something with it i caught it up on a rail rd track and ****ed it up the time and effort i gunna have to put into peiceing it together may not be worth it if there is a gain to be made with a 3".... i will get a y-pipe at some point just been caught up doing other mods.[quote=Apollos2;7054770]What size is your existing catback pipes? I would get a Y-pipe instead, you will get a better kick from that as opposed to going 3" with all the stock exhaust parts up from.
Deus has headers and Y-pipe to go with his 3" exhaust.
__________________
Deus has headers and Y-pipe to go with his 3" exhaust.
__________________
Last edited by 6spBaDAsS6ThGeN; 05-30-2009 at 02:53 PM.
#11
Supporting Maxima.org Member
iTrader: (16)
Join Date: Nov 2004
Location: Denver, Colorado
Posts: 2,761
Ahhh, didn't realize your catback is jacked. If you eventually plan on doing headers and Y-pipe then I might think about 3in exhaust. If not stick with the 2.5, still bigger than stock anyway. (I believe stock is 2in).
I'm running 2.5 all the way from my headers to the Nismo catback. Would .5 more inches really help? I don't know.
I'm running 2.5 all the way from my headers to the Nismo catback. Would .5 more inches really help? I don't know.
Last edited by Apollos2; 05-31-2009 at 06:44 AM.
#12
when i had my 5.5 i had cattman headers and y- pipe and the diffrence was nite and day... i will def do headers and a y just have mony tied up right now... idk i guess ill just keep the 2.5... just pondering as of now but whata you think about a true duel set-up
#14
a 3 inch exhuast is not going to do anything for any 4 cyclinder.
so I assume these cars are V6 and up.
Would like to see some dyno , bigger is not always better.
#15
#16
#18
Mild build no internals. http://www.k20a.org/forum/showthread...t=inch+exhaust
#21
Mild build no internals. http://www.k20a.org/forum/showthread...t=inch+exhaust
I was under impression that the OP wanted a 3 inch exhuast from the Y.
Also to the OP , the 6th gen is a Y pipe into 1 single pipe and back out 2 mufflers
There are a few people that are running True Dual Setup.
I am one of them
#22
But techinally he 2.5 catback to 3 inch , which would leave back pressure.
I was under impression that the OP wanted a 3 inch exhuast from the Y.
Also to the OP , the 6th gen is a Y pipe into 1 single pipe and back out 2 mufflers
There are a few people that are running True Dual Setup.
I am one of them
I was under impression that the OP wanted a 3 inch exhuast from the Y.
Also to the OP , the 6th gen is a Y pipe into 1 single pipe and back out 2 mufflers
There are a few people that are running True Dual Setup.
I am one of them
#23
Supporting Maxima.org Member
iTrader: (16)
Join Date: Nov 2004
Location: Denver, Colorado
Posts: 2,761
Mild build no internals. http://www.k20a.org/forum/showthread...t=inch+exhaust
I guess some could consider that mild...I don't really. But anyway, I'm not saying there is nothing to be gained by 3inch exhaust, just that it probably should be accompanied by mods that really need that big of an opening.
Read all those pages in that thread, several of those posters are in disagreement about those gains with the 3in exhaust even after the dyno. There is a little more to it.
"If you eventually plan on doing headers and Y-pipe then I might think about 3in exhaust. If not stick with the 2.5..."
My 2cents
#24
So this is a 98 Civic with ".......the only mods are an RBC intake manifold, 11" intake with velocity stack/filter combo, and long-tube Tri-Y header, tuned on K-Pro."
I guess some could consider that mild...I don't really. But anyway, I'm not saying there is nothing to be gained by 3inch exhaust, just that it probably should be accompanied by mods that really need that big of an opening.
Read all those pages in that thread, several of those posters are in disagreement about those gains with the 3in exhaust even after the dyno. There is a little more to it.
"If you eventually plan on doing headers and Y-pipe then I might think about 3in exhaust. If not stick with the 2.5..."
My 2cents
I guess some could consider that mild...I don't really. But anyway, I'm not saying there is nothing to be gained by 3inch exhaust, just that it probably should be accompanied by mods that really need that big of an opening.
Read all those pages in that thread, several of those posters are in disagreement about those gains with the 3in exhaust even after the dyno. There is a little more to it.
"If you eventually plan on doing headers and Y-pipe then I might think about 3in exhaust. If not stick with the 2.5..."
My 2cents
At any rate, cattman has enough back orders for his 3" exhaust and people are going to be running them with a variety of setups so hopefully we'll have some more dynos of it this summer.
Last edited by PulsarGTS; 05-31-2009 at 08:41 AM.
#25
is the op wanting to run 3" into a single muffler or run 3" into a dual muffler setup? If he wants to do that, what size piping would he be needing after the split because he wouldn't want 3" right?
#27
But techinally he 2.5 catback to 3 inch , which would leave back pressure.
I was under impression that the OP wanted a 3 inch exhuast from the Y.
Also to the OP , the 6th gen is a Y pipe into 1 single pipe and back out 2 mufflers
There are a few people that are running True Dual Setup.
I am one of them
I was under impression that the OP wanted a 3 inch exhuast from the Y.
Also to the OP , the 6th gen is a Y pipe into 1 single pipe and back out 2 mufflers
There are a few people that are running True Dual Setup.
I am one of them
Thread
Thread Starter
Forum
Replies
Last Post
My Coffee
New Member Introductions
15
06-06-2017 02:01 PM