high flow vs stock cat
02-19-2007, 05:45 AM
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high flow vs stock cat
hey guys i need a opinion and something im stuck on here. i hav a 98 civic ex with a catback exhaust. i have a high flow cat on there tho and its a little loud for my area attracting too much po-po attention. if i put the stock cat back on will it make my car quieter? how much quieter? opinions and suggestions please 
02-19-2007, 05:48 AM
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Re: high flow vs stock cat (JDean6pac)
Yes, it will quiet it down. A stock cat has baffling (the stuff used to catch the bad ****), which will quiet the tone down.
02-19-2007, 05:50 AM
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Re: high flow vs stock cat (idriveahonda)
if you have a high flow cat, its likely a resonator and quiets down the noise already
if you have a test pipe, then a real cat will help a small bit
if you have a test pipe, then a real cat will help a small bit
02-19-2007, 07:57 AM
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Re: high flow vs stock cat (JDean6pac)
that all has to do mainly do with your muffler
what would even be twice as good:
get a real resonator put on between your muffler and cat location
what would even be twice as good:
get a real resonator put on between your muffler and cat location
02-19-2007, 08:20 AM
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Re: high flow vs stock cat (dafuzzbudd)
The longer the muffler, the quieter the exhaust. I don't know if you're willing to hack up your exhaust but you could replace it with a long magnaflow oval. If I remember correctly, there's clearance for about an 18 inch muffler on a 92-95 Civic.
I have a DC header, Magnaflow high flow cat, 2.25 ID crush bent piping, the longest muffler that will fit and I'm going to replace all of my straight piping with 2 Magnaflow resonators. That and the turbo charger are going to make it probably as quiet as stock.
I have a DC header, Magnaflow high flow cat, 2.25 ID crush bent piping, the longest muffler that will fit and I'm going to replace all of my straight piping with 2 Magnaflow resonators. That and the turbo charger are going to make it probably as quiet as stock.
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02-19-2007, 10:42 AM
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Re: high flow vs stock cat (SkoundrelUSA)
definitely will quiet it down if you have a stock cat, but theres going to be backpressure, which will reduce hp. but its not a lot. that seems like the only option to do...to keep from 5-0...sticking back your stock cat on.
02-21-2007, 05:22 AM
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Re: high flow vs stock cat (pli)
yea but im not really worried about hp too much. i really ony want this car as is wiht a nice sound to it, maybe throw sum 16's on it and slam it til i get outa college wile i save up to do my swap.
02-21-2007, 05:55 AM
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Re: high flow vs stock cat (JDean6pac)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dafuzzbudd »</TD></TR><TR><TD CLASS="quote">question, im shopping for a resonator for my eg 2.5 piping,
what's the biggest size resonator i can fit?</TD></TR></TABLE>
im bidding on a 20 inch, hope it'll fit
Modified by dafuzzbudd at 10:52 AM 2/21/2007
what's the biggest size resonator i can fit?</TD></TR></TABLE>
im bidding on a 20 inch, hope it'll fit
Modified by dafuzzbudd at 10:52 AM 2/21/2007
02-21-2007, 07:21 AM
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Re: high flow vs stock cat (b16nonoy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16nonoy »</TD></TR><TR><TD CLASS="quote">try a resonator..I think that will quiet it down a little</TD></TR></TABLE>
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