Does the exhaust upgrade make a difference?
11-29-2009, 10:07 PM
#42
Whats up with RDX owners?
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http://www.ct-engineering.com/store/240111.html
-Adds a smooth, low, aggressive tone, and approximately 6-8 wheel hp
-Cat-back exhaust systems have been tested and do NOT make more power
-Cat-back exhaust systems have been tested and do NOT make more power
11-29-2009, 10:47 PM
#44
Ultra Negro
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Its easy to misunderstand the what CT says on their website.
http://www.ct-engineering.com/store/240111.html
The stock exhaust is pretty free-flowing. What they are saying is that they make 6-8 hp with the axlebacks, but installing a b-pipe shows no gains.
http://www.ct-engineering.com/store/240111.html
The stock exhaust is pretty free-flowing. What they are saying is that they make 6-8 hp with the axlebacks, but installing a b-pipe shows no gains.
Yeah but most exhaust is mainly for tone, except boosted applications.
11-30-2009, 03:15 AM
#46
Whats up with RDX owners?
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I wouldnt say its not restrictive what-so-ever. Its 2.25", the cat sucks, and the stamped y-split to the mufflers is garbage. Not only that, but the bends in the piping from the b-pipe to the mufflers is way too drastic. Upgrade to 2.5" piping all the way back including a 2.5" cat and a real welded y-split and you'll see gains, I guarantee it.
Last edited by civicdrivr; 11-30-2009 at 03:18 AM.
11-30-2009, 10:51 AM
#48
Suzuka Master
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i wouldnt say its not restrictive what-so-ever. Its 2.25", the cat sucks, and the stamped y-split to the mufflers is garbage. Not only that, but the bends in the piping from the b-pipe to the mufflers is way too drastic. Upgrade to 2.5" piping all the way back including a 2.5" cat and a real welded y-split and you'll see gains, i guarantee it.
11-30-2009, 11:03 AM
#49
Whats up with RDX owners?
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I dont see you loosing too much on the low end, not with 2.5". With 3", absolutely.
11-30-2009, 11:14 AM
#50
Whats up with RDX owners?
iTrader: (9)
Forgot to add, when dealing with our style of exhaust, you dont need the muffler pipe diameter to match the rest of the piping (i.e.- 2.5" piping doesnt need to go into a 2.5" muffler).
Basically, figure out the surface area (in my example, we'll use 2.5") and divide by two. Thats 1.25". Try to get a Y pipe that goes from 2.5" in to no smaller then 1.25" out (2.5" to 2" = good; 2.5" to 1" = bad) Do the same for the mufflers. As long as the surface area is the same or larger, you wont cause a restriction.
Basically, figure out the surface area (in my example, we'll use 2.5") and divide by two. Thats 1.25". Try to get a Y pipe that goes from 2.5" in to no smaller then 1.25" out (2.5" to 2" = good; 2.5" to 1" = bad) Do the same for the mufflers. As long as the surface area is the same or larger, you wont cause a restriction.
11-30-2009, 11:42 AM
#51
^^^^ so i COULD get the xlr8 cat, then upgrader the piping fom the mid muffler to the exhaust??? and then i'd see gains??
I'm either looking to remove the mid muffler on stockies... or leave it and put the CT cans on.
all I know is my exhaust from the CAT... on, is hurting me, and my headers are begging for some HELP
I'm either looking to remove the mid muffler on stockies... or leave it and put the CT cans on.
all I know is my exhaust from the CAT... on, is hurting me, and my headers are begging for some HELP
11-30-2009, 11:50 AM
#52
Whats up with RDX owners?
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Yea, thats the issue we run into with headers. They have a 2.5" collector, and the rest of the piping is 2.25". Its stupid not to upgrade the rest.
11-30-2009, 11:54 AM
#53
well, the piping from the cat to the mid muffler looks pretty beefy considering its a stock system... so
SAY i got the XLR8 cat, left the piping to the mid muffler the same, then changed the piping from the mid muffler to the CT cans. and obv got the CT cans
what would u think that would add?
I want to keep the mid muffler for the clean sound and so i'll have a lil back pressure still for low end tq.
think that get me 10-15? whp
SAY i got the XLR8 cat, left the piping to the mid muffler the same, then changed the piping from the mid muffler to the CT cans. and obv got the CT cans
what would u think that would add?
I want to keep the mid muffler for the clean sound and so i'll have a lil back pressure still for low end tq.
think that get me 10-15? whp
11-30-2009, 01:40 PM
#55
Whats up with RDX owners?
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Id say upgrade to 2.5" from the headers back. Get a nice y-pipe. Pick up a magnaflow resonator to stick in place of the mid muffler and install the CT cans. I think you will be pleased.
11-30-2009, 01:53 PM
#57
Whats up with RDX owners?
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Thats what the resonator is for.
11-30-2009, 04:05 PM
#59
ok so the ct header is 2.5" then the xlr8 cat is 2.5" then the (type S) exhaust pipe from the cat is 2.25" correct? How does even that work?
I'm thinking of BANG for $ here. so:
XLR8 cat
leave the 2.25" pipe from cat to mid muffler. (is 1/4 inch thattt restrictive)
then do the magnaflow midmuffler
and piping to the stokies... to see how it is..
and then go to the CT if i want more sound
I'm thinking of BANG for $ here. so:
XLR8 cat
leave the 2.25" pipe from cat to mid muffler. (is 1/4 inch thattt restrictive)
then do the magnaflow midmuffler
and piping to the stokies... to see how it is..
and then go to the CT if i want more sound
11-30-2009, 10:21 PM
#63
Ultra Negro
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I prefer the tanabe mainly because I think it looks better, and I love the way it sounds.
That and I only paid 463 shipped for it from some place that went out of bidness
11-30-2009, 10:32 PM
#66
Suzuka Master
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lol you didnt know that. i think you can only get the axle-backs now. i dont think they make the full catback anymore. the only reason im able to get the b-pipe is because im getting it used from a member on the boards.
11-30-2009, 11:04 PM
#68
Whats up with RDX owners?
iTrader: (9)
Yea, CT used to make the B-pipe. I dont think they ever sold it as a package deal though.
any shop can custom fab the b-pipe. it's just a freakin pipe
12-01-2009, 10:54 AM
#73
ill have the comptech headers, p2r test pipe, xlr8 high flow cat, and comptech muffles when they are delivered. Do i still need some custom piping to have a complete exhaust or is what i listed all i need?
12-01-2009, 10:59 AM
#74
3.5 psi
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If i were you i would just save your $ and wait until spring. No point doing your exhaust right before winter.
In the spring we'll have a meet and you can hear SG81's comptech and my exhaust. That's the best way to decide what you like.
In the spring we'll have a meet and you can hear SG81's comptech and my exhaust. That's the best way to decide what you like.
12-01-2009, 11:05 AM
#77
3.5 psi
iTrader: (1)
This is our exhaust:
Headers-cat------------resonator----(split into two pipes to mufflers)
If you want a complete 2.5" exhaust then you'll have to upgrade all the piping to 2.5". Our stock exhaust is 2.25".