i just bought an 89 hatch with a zc engine. its got a header with 2-1/2" exhaust and a big *** bomb muffler. i want to cut the muffler off, put a smaller performance muffler about where the stock muffler would be, then run a tailpipe out. the goal is to not see the muffler, be somewhat quiet, and still FLOW.

any suggestions?? thanks in advance...

 

This is all you need.



To learn more about them go herehttp://www.magnaflow.com/02pro...d.htm

 

Buy an HKS stock look with the perfomance! Rob

 

Wow. Reading this made me remember. the back of the june 03 Import Tuner
It is a greddy advertisement, but some valuable information.
the source of this information is "As Tested in Turbo Magazine Dec-02"
Maby this will help

The Data is from "The GReddy 80mm WRX cat-back exhaust system"
but hopefully this helps. I can't imagine that it is much different.


- dB(A)@ idle - dB(A)@3000- Peak HP

Stock - 87 - 86 - 191.8
GReddy - 94 - 92 - 200.9
M2 - 94 - 94 - 195.9
Super Sprint - 95 - 101 - 198.0
MRT Perf. - 96 - 104 - 198.8
HKS -97 - 102 - 202.9
Cobb Tuning - 97 - 103 - 200.0
5 Zigen -98 - 105 - 198.7
Apexi - 100 - 104 - 201.1
Tanabe - 101 - 107 - 197.7
Thermal - 101 - 108 - 198.3
Skunk2 - 102 - 106 - 199.3
Blitz - 104 - 103 - 200.2

There. That is off of a wrx, in june of 03 but that probably isn't much different.

I hope I helped and didn't waste my time and yours

 

hmmmmm i can't get the spaces in for some reason... whats the deal with that. it deleted them???


ok well if you really wanna know them i put them on a .txt/notepad file and i can send them to you if you want.

 

5Zigen, with 2 resonators. Anything is quiet enough with 2 resonators... plus the 5Zigen is pretty small as far as canisters go.

 

they no more DC how come??? anyways i'd probly go with DC or Thermal, they're pretty quiet until you open um up...

 

i would try the dynomax super turbo muffler. looks stock but flows so much better

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eresuncabron &raquo;</TD></TR><TR><TD CLASS="quote">

The Data is from "The GReddy 80mm WRX cat-back exhaust system"
but hopefully this helps. I can't imagine that it is much different.


</TD></TR></TABLE>

Turbo/NONturbo, big difference

 

Well the engine will natrually make more noise. but i was pointing out how some are still louder than others and some have a much better hp gain.

 

DC SPORTS= AEM
aem bought out dc sport.

 

i'm running 2.5" piping with a catco hi-flow cat, resonator and a dynomax turbo muffler...looks identical to stock and is painted entirely black....

and it doesn't make a damn sound, no whines no rattles just a deep sound....although i does roar at about 5k+

 

dynomax superturbo

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr. carpenter &raquo;</TD></TR><TR><TD CLASS="quote">dynomax superturbo</TD></TR></TABLE>

part # 17778 muffler
2 elbows with SS tips L - 42106 R - 42107

2 1/4" inlet , dual 2" outlets.

 

 

moroso spiral muffler flows like hell and not to costly http://www.jegs.com has it for $69 dollars, and not to loud

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eresuncabron &raquo;</TD></TR><TR><TD CLASS="quote">Wow. Reading this made me remember. the back of the june 03 Import Tuner
It is a greddy advertisement, but some valuable information.
the source of this information is "As Tested in Turbo Magazine Dec-02"
Maby this will help

The Data is from "The GReddy 80mm WRX cat-back exhaust system"
but hopefully this helps. I can't imagine that it is much different.


- dB(A)@ idle - dB(A)@3000- Peak HP

Stock - 87 - 86 - 191.8
GReddy - 94 - 92 - 200.9
M2 - 94 - 94 - 195.9
Super Sprint - 95 - 101 - 198.0
MRT Perf. - 96 - 104 - 198.8
HKS -97 - 102 - 202.9
Cobb Tuning - 97 - 103 - 200.0
5 Zigen -98 - 105 - 198.7
Apexi - 100 - 104 - 201.1
Tanabe - 101 - 107 - 197.7
Thermal - 101 - 108 - 198.3
Skunk2 - 102 - 106 - 199.3
Blitz - 104 - 103 - 200.2

There. That is off of a wrx, in june of 03 but that probably isn't much different.

I hope I helped and didn't waste my time and yours </TD></TR></TABLE>

I don't know how close those numbers will be on a crx.

It says that the greddy was 87 dB at idle... no way, not on my car AND I have a test pipe. My car is closer to 87dB when it's at 5k rpm. I don't think my car EVER reached 200 dB considering if it did I would NOT have been able to run at Laguna Seca.

Laguna (on open lap days) doesn't allow anything over 92 Db (I think). And they measure you as you come down the start/finish so you're at high rpms.

Unless those volumes were measured right at the tailpipe I would only take the figures as a relative comparison.

AFter all, the human voice is something like 65 dB when measured 1 foot from the mouth.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr. carpenter &raquo;</TD></TR><TR><TD CLASS="quote">dynomax superturbo</TD></TR></TABLE>


do these really give good power compared to the canister style mufflers? i was thinking about getting one for the stock look, but arnt sure if they produce as much hp/tq as the bigger ones.

 

i bought a dynomax superturbo and got it put on and it sounds good.

 

Where do you guys find good resonators from? I dont care if it's flanged or not...also what cat's are you using? Carsound?

Vince

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zcNOS &raquo;</TD></TR><TR><TD CLASS="quote">i bought a dynomax superturbo and got it put on and it sounds good.</TD></TR></TABLE>
me too

looks like dynomax's are starting to get a little more popular... I've had mine for about a year now... and I'm still in love with it
and you cant go wrong with a lifetime warranty

 

i got the apexi worldsport.... and the intake noise ownz the exhaust and a i got jdm 4-1 .... catco high flow cat

 

Greddy SP full catback with a 3" resonated test pipe!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AgentJam &raquo;</TD></TR><TR><TD CLASS="quote">.also what cat's are you using? Carsound?

</TD></TR></TABLE>

carsound is junk , I had the core fall completely apart on mine in less than a year.

now I run a test pipe but if I were to go with another cat it would be a Jegs/Summit hi-flow 2.5" deal.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rice_classic &raquo;</TD></TR><TR><TD CLASS="quote">

I don't know how close those numbers will be on a crx.

It says that the greddy was 87 dB at idle... no way, not on my car AND I have a test pipe. My car is closer to 87dB when it's at 5k rpm. I don't think my car EVER reached 200 dB considering if it did I would NOT have been able to run at Laguna Seca.

Laguna (on open lap days) doesn't allow anything over 92 Db (I think). And they measure you as you come down the start/finish so you're at high rpms.

Unless those volumes were measured right at the tailpipe I would only take the figures as a relative comparison.

AFter all, the human voice is something like 65 dB when measured 1 foot from the mouth.</TD></TR></TABLE>

you read the entire graph wrong guy...

dB(A)@ idle - dB(A)@3000- Peak HP

Stock - 87____________86_______191.8
GReddy - 94____________92_______200.9

the last number is HP on the dyno...