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Author
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Topic: will a stock h pipe be louder with 2 cats instead of 4?
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ed650
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Member # 9897
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posted
 
 
I have 4 cats and dont want to go offroad , so will removing 2 cats from a stock h pipe make it a bit louder? I am running bbk shortys and 10 series flowmasters.
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410w Hatch
306Ci Coupe
Posts: 1744 | From: menlo park | Registered: Apr 2010
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FivePTSlow
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Member # 7682
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posted
quote:
Originally posted by ed650:
I have 4 cats and dont want to go offroad , so will removing 2 cats from a stock h pipe make it a bit louder? I am running bbk shortys and 10 series flowmasters.
I've never removed the cats from a stock h pipe, but I have ran the 2 cat h pipes and they're always a little louder than stock, so I would imagince removing 2 cats would produce a similar result in being a little louder
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2011 GT/CS 5.0 + Boost(Procharger)
90 Bronco 5.8 Lifted
05 SRT-4 24PSI E-85 at least 50 million hp
07 Harley VROD NRS Stage 1
Posts: 1857 | From: Sacramento | Registered: May 2007
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84SVOrick
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Member # 9039
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posted
DONT RUIN A STOCK HPIPE, ID KEEP IT AN BUY AN O/R for $100, cheaper the having a muffler shop cut an weld sum piping.. then u can change it at any time...plus with 2 cats u wont pass inspection
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Bay Area Stunnaz
RIP Jeannera "FOXY302"
10/29/87-10/9/10
1984 SVO 302 HCI a basic bitch
1986 GT FOXY302 stolen and totaled R.I.P.
Posts: 1928 | From: Vallejo CA | Registered: Mar 2009
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triple b
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Member # 8763
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posted
i have a stock pipe i switch out when i smog it has the top two cat hollowed and the rear two are brand new cats it pass with flying color with H/C/I in the trickflow stg 2 cam
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1988 4cyl conv 306 HCI "sasha"
2004 tahoe
Sold- 87 GT, 72 chevelle, 63 biscane, 82 monte carlo, 73 nova, 88 silverado,
Posts: 1730 | From: sacramento ca | Registered: Nov 2008
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fredfifty
Since
9/2010
Member # 10320
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posted
a smog tech told me he didnt care if there was 4 cats, as long as you had 2...so i guess its entirely up to the tech on something like that...
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RIP EDSON VELORO
IM A NOOB, EXCUSE ME. THANKS.
92 LX Coupe 5.0 CARB'd BOLT-ONS SMOG LEGAL
62 Rag Impala
Posts: 4948 | Registered: Sep 2010
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1Sick91
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Member # 6776
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posted
looking for a smog place that isnt hard on the visual??? pm me
Posts: 217 | From: Vacaville, Ca | Registered: May 2006
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50DADDY
CAFords OG
Member # 3076
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posted
I hollowed out the front 2 cats on my 2002 GT,it sounded way better and it still pased smog.
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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jayzers46
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Member # 12093
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posted
I agree don't ruin your stock h pipe you can buy an offroad X off clist or brand new for about the same as modifying your pipe! I run an BBK X pipe no cats out borla stingers and is not obnoxiously loud and when smog time comes I bolt up my stock h pipe pass with flying colors and swap it out for another two years!
[ June 16, 2012, 04:58 PM: Message edited by: jayzers46 ]
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-The Jayzer
Posts: 56 | From: Folsom, CA | Registered: Jun 2012
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