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05-14-2007, 11:32 PM
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#1
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Join Date: Nov 2005
Location: North Jersey
Posts: 563
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Catalytic converter ?????
ok..... few questions....
1990 camaro tpi motor
1) if i take out my catalytic converter will my check engine light come on?
2) will the car run better or worse? (think my cat is clogged)
3) anyone have no cat or a gutted cat on their car? or should i buy a 50 doller azone one?
anyone????
thanks...
__________________
1990 IROC-z28 Convertible ... best et (15.9 @ 86.7)
1970 Chevelle ls5 ... best et (13.97 @ 101.3)
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05-15-2007, 07:10 AM
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#2
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Stalker
Join Date: Aug 2004
Posts: 12,080
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1, no, check engine light will not come on
2. if its clogged, it will definately run better without it
3. majority of my vehicles didnt have cats
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05-15-2007, 10:07 AM
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#3
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Join Date: Nov 2005
Location: North Jersey
Posts: 563
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thanks.... 2 more things... i heard that if theres no cat there isnt enough backpressure to start the car? that sounds totally wrong to me... and will the car run rich if i put a testpipe in its place???
thanks again..
__________________
1990 IROC-z28 Convertible ... best et (15.9 @ 86.7)
1970 Chevelle ls5 ... best et (13.97 @ 101.3)
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05-15-2007, 10:18 AM
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#4
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Join Date: Aug 2004
Location: Somerset County
Posts: 5,559
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thats dumb...the car will start fine. it will probably run ever-so-slightly rich but nothing to be concerned about
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1999 Corvette FRC
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05-15-2007, 11:09 AM
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#5
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10 Second Club; Has fan club
Join Date: Dec 2005
Location: Delmont nj
Posts: 4,369
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Quote:
Originally Posted by j0n
thats dumb...the car will start fine. it will probably run ever-so-slightly rich but nothing to be concerned about
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i agree with j0n 100% i havent had cats since i got my drivers license, youll be fine!
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01' Z06 62k miles. Vararam, Longtubes, off road xpipe, tuned by me. Times TBA
2001 Corvette, Bolt ons , tuned 10.75@124.56 mph 1.38 60' Sold
1997 Saturn Sc1 5spd DOHC swapped
Bolt ons, decked head, stock intake cam on exhaust side, lotsa weight redux
13.22@102.32 mph 1.93 60'
12's on moda? One day
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05-15-2007, 03:11 PM
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#6
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by Jared1970Chevelle
thanks.... 2 more things... i heard that if theres no cat there isnt enough backpressure to start the car? that sounds totally wrong to me... and will the car run rich if i put a testpipe in its place???
thanks again..
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BS. Your car will start fine.
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05-15-2007, 03:52 PM
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#7
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Join Date: Nov 2005
Location: North Jersey
Posts: 563
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yea i figured it was ******** but never heard of it before so i asked...lol...
how much louder will it be with no cat? or high flow cats compared to stock?
anyone got no cat on a tpi 1990 camaro?
__________________
1990 IROC-z28 Convertible ... best et (15.9 @ 86.7)
1970 Chevelle ls5 ... best et (13.97 @ 101.3)
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05-15-2007, 04:11 PM
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#8
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Join Date: Aug 2004
Location: Somerset County
Posts: 5,559
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Quote:
Originally Posted by Jared1970Chevelle
yea i figured it was ******** but never heard of it before so i asked...lol...
how much louder will it be with no cat? or high flow cats compared to stock?
anyone got no cat on a tpi 1990 camaro?
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with a stock catback and exhaust manifolds it wont be loud enough to notice
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1999 Corvette FRC
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05-15-2007, 04:54 PM
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#9
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NJFBOA Co-Founder
Join Date: Jul 2004
Location: All up in your kool aid!
Posts: 12,235
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if the rest of the exhaust is stock, it will be about as loud as a car with a cat back system.
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05-15-2007, 11:26 PM
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#10
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Join Date: Nov 2005
Location: North Jersey
Posts: 563
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sweet.... i got a flowmasta muffler on it now and it sounds like its got a cam in it.....trying to get that thumpy cam sound without putting one in... maybe ill go with a testpipe....
as long as its under 81 decibles....mr po po cant ticket
__________________
1990 IROC-z28 Convertible ... best et (15.9 @ 86.7)
1970 Chevelle ls5 ... best et (13.97 @ 101.3)
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05-16-2007, 02:49 AM
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#11
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Join Date: Feb 2005
Location: west orange nj
Posts: 2,415
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gut your cat its better just incase you get pulled over the cops see a cat underneath your car
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05-16-2007, 08:00 PM
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#12
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
Originally Posted by Jared1970Chevelle
trying to get that thumpy cam sound without putting one in...
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 thats the dumbest thing ive read in a while....rice.
anyway, the only reason removing a cat would have adverse effects, is if theres an o2 sensor after the cat, or when you have to go to inspection...oh and the smell is pretty obnoxious (at least on my car anyway)
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Matt
B18B1 FTW
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05-16-2007, 08:01 PM
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#13
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Join Date: Aug 2004
Location: Somerset County
Posts: 5,559
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y'know i never noticed any smell on my t/a, my friends all did though
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1999 Corvette FRC
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05-16-2007, 08:51 PM
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#14
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
Originally Posted by j0n
y'know i never noticed any smell on my t/a, my friends all did though
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my mustang is horrible...well i guess its cause my weatherstripping around my hatch doesnt really seal, and since the exhaust dumps under the car it gets sucked in there if i have my windows open/tops off...so i smell like exhaust after driving it
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Matt
B18B1 FTW
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05-17-2007, 05:31 PM
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#15
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Join Date: Nov 2005
Location: North Jersey
Posts: 563
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some dudes selling a high flow for 30 buks imma just buy that for a mild cam sound...
__________________
1990 IROC-z28 Convertible ... best et (15.9 @ 86.7)
1970 Chevelle ls5 ... best et (13.97 @ 101.3)
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