Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

2.25 or 2.5" for single cam boosting later

 
Old 08-08-2004, 12:43 PM
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Default 2.25 or 2.5" for single cam boosting later

im swapping my exhaust when i put in my jdm d15, which piping would be better, would 2.5 be too much for an na d15? does it make a difference when i boost?
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Old 08-08-2004, 12:47 PM
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Default Re: 2.25 or 2.5" for single cam boosting later (Art In Motion)

i have an 2.5" AEM exhaust on my stock little d16y8 and it's fine
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Old 08-08-2004, 12:51 PM
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Default Re: 2.25 or 2.5" for single cam boosting later (vsm98civic)

Yes, 2.5 is way too much for a D15.

I had 2.25" on my stock Si..... D15 boosted try 2.25"
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Old 08-08-2004, 12:54 PM
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Default Re: 2.25 or 2.5" for single cam boosting later (Poop111444)

2.5"
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Old 08-08-2004, 12:57 PM
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Default Re: 2.25 or 2.5" for single cam boosting later (egb18turbo)

mixed opinions...
how much louder will 2.5 be?
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Old 08-08-2004, 12:59 PM
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Default Re: 2.25 or 2.5" for single cam boosting later (Art In Motion)

both will be loud no doubt (add resonators), but my friend has a 14b boostin y7 stock and once he got a 2.5" exhaust on, it felt that there was power loss and so he wants an e-cut out (compared to open down pipe obviously lol)
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Old 08-08-2004, 01:00 PM
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Default Re: 2.25 or 2.5" for single cam boosting later (Art In Motion)

2.5 NA or boosted.

Spade proved this to me with his dyno numbers. 126whp with intake, header, exhuast, intake manifold
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Old 08-08-2004, 01:01 PM
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Default Re: 2.25 or 2.5" for single cam boosting later (JDM EK9)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM EK9 &raquo;</TD></TR><TR><TD CLASS="quote">2.5 NA or boosted.

Spade proved this to me with his dyno numbers. 126whp with intake, header, exhuast, intake manifold</TD></TR></TABLE>
thanks
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Old 08-08-2004, 01:02 PM
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2.5 should be fine...no sense in buying a 2.25 then buying a 2.5 after you boost. I have 2.5 on my D16 and plan on boosting it. Runs fine NA right now.
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Old 08-08-2004, 01:18 PM
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Default Re: (H23 EG Hybrid)

what about the muffler, is any one running boost with an es oval? i just want something clean and not too loud but is it too restricting for turbo?
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Old 08-08-2004, 01:23 PM
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boosted d16z6 w/ jdm d15 head
2.25" mandrel bent from cat back
"cherry bomb" muffler as a resinator
Unknown brand muffler
I give my setup a Its not too loud. It actually got really quiet once I put the turbo on.
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Old 08-08-2004, 01:24 PM
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Default Re: (Art In Motion)

I have a 2.25 on my d16z6. 2.5 will gain bottom end but lose top. u dont have VTEC so it doesnt really matter for u. both will be ricy haha resinators help...mine broke randomly while driving...sounds crappy. Good luck
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Old 08-08-2004, 02:31 PM
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Default Re: (HondaVTEC93)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaVTEC93 &raquo;</TD></TR><TR><TD CLASS="quote">I have a 2.25 on my d16z6. 2.5 will gain bottom end but lose top. u dont have VTEC so it doesnt really matter for u. both will be ricy haha resinators help...mine broke randomly while driving...sounds crappy. Good luck</TD></TR></TABLE>

im sorry to tell you this but you have it backwards
the smaller the piping the more low end you will have
because the backpressure helps low end tourque
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Old 08-08-2004, 03:09 PM
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Default Re: (wannabe_si)

ok im goin with 2.5, can someone answer my question about the muffler?
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Old 08-08-2004, 03:44 PM
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Default Re: (Art In Motion)

For boost definately 2.5 inch, as for the muffler make sure it is 2.5in as well
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Old 08-08-2004, 03:58 PM
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Default Re: (CivicGSR225)

Why would you want to put a resonator on it? I dont have a resonator on my Civic EX. I have 2.5 cat back mandrel bent into a mangnaflow muffler.
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Old 08-08-2004, 04:20 PM
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Default Re: (harwood39)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by harwood39 &raquo;</TD></TR><TR><TD CLASS="quote">Why would you want to put a resonator on it? I dont have a resonator on my Civic EX. I have 2.5 cat back mandrel bent into a mangnaflow muffler.</TD></TR></TABLE>
so it doesnt sound like ***
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Old 08-08-2004, 04:47 PM
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Default Re: (Art In Motion)

I have a magnaflow cat back. 2.25" piping with resonator. It's nice an quiet with a real deep tone. I love it, rattle a bit tho, dont know whats up there....
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Old 08-08-2004, 04:52 PM
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Default Re: (spyderracing32)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spyderracing32 &raquo;</TD></TR><TR><TD CLASS="quote">I have a magnaflow cat back. 2.25" piping with resonator. It's nice an quiet with a real deep tone. I love it, rattle a bit tho, dont know whats up there....</TD></TR></TABLE>
ive been looking around for one of those....where did you get it how much???
is it the really stock looking clean one or the caister style???
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Old 08-08-2004, 04:53 PM
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Default Re: (Art In Motion)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Art In Motion &raquo;</TD></TR><TR><TD CLASS="quote">
ive been looking around for one of those....where did you get it how much???
is it the really stock looking clean one or the caister style???</TD></TR></TABLE>

Ebay sells them all day long for a good price
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Old 08-08-2004, 04:54 PM
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Default Re: (vsm98civic)

i looked on ebay all i saw was the canister style!
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Old 08-08-2004, 06:10 PM
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Default Re: (Art In Motion)

Im going with 2.5" on my similar set up
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Old 08-08-2004, 07:32 PM
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I've got a twin loop...hella quiet. Only time it gets loud is when you go stomp on it. Mine would be a little more quiet if I were to run a HF cat...but I have a test pipe and it does just fine. Have yet to be pulled over or anything.

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Old 09-12-2004, 09:44 PM
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Default Re: (H23 EG Hybrid)

a good place to get them is at http://www.kteller.com
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Old 09-13-2004, 12:05 AM
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Default Re: (H23 EG Hybrid)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H23 EG Hybrid &raquo;</TD></TR><TR><TD CLASS="quote">I've got a twin loop...hella quiet. Only time it gets loud is when you go stomp on it. Mine would be a little more quiet if I were to run a HF cat...but I have a test pipe and it does just fine. Have yet to be pulled over or anything.

</TD></TR></TABLE>
w0w sooo sexy....
im running 2.5 inch under the gas tank (one bend), and im planning to turbo my lil d15. as stated earlier no use in getting a 2.25 then upping it when u turbo.
ive been pulled over once, but no tickets, jus a warning. not too loud, but really loud when u gun it.... my verdict is 2.5
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