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Effects of taking out my cat?
This is a discussion on Effects of taking out my cat? within the Firebird / WS6 forums, part of the Vehicle Specific category; Yeah ill end up getting it tuned pretty quick here. I was bored today so I took the catback off ...
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02-28-2011, 03:11 PM #21
Yeah ill end up getting it tuned pretty quick here. I was bored today so I took the catback off and I'm just running on the stock headers and cat. It sounds amazing but will it do any damage to anything?
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02-28-2011, 05:41 PM #22
- Join Date
- Apr 2008
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- Madison, WI
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- 7,001
1999 Formula WS6 M6-sold- 2001 Silverado Z71
Guys, this guy has a 94...he might not even have rear O2 sensors. Gut them and go!
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02-28-2011, 05:42 PM #23
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02-28-2011, 05:46 PM #24
- Join Date
- Apr 2008
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- Madison, WI
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- 7,001
1999 Formula WS6 M6-sold- 2001 Silverado Z71
Rear O2s are a OBD II thing. OBD II started in 1996, but some 95s vehicle also had some OBD II things like rear O2s.
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02-28-2011, 06:40 PM #25
never even looked at the year of vehicle. Good catch!
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02-28-2011, 07:53 PM #26
well i have a 98 ls1 camaro and i put lt's on it and its still open headers right now and i drove it around the block with no o2 sensors in and no lights never came on, and the car runs and idles fine, is this a problem????
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02-28-2011, 08:00 PM #27
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02-28-2011, 08:03 PM #28
Thats a MAF car correct and not the SD right?
You can get a cable and tune the thing yourself with your laptop.
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02-28-2011, 08:08 PM #29
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- Feb 2007
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- San Diego, CA
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- 5,824
2002 Z28 A4 NBM- Sadly now demodded :(
You won't pass smog here in The Valley of The Sun without the cat on a 94. Be prepared to swap out the pipe every 2 years.
IMHO, that's a thing I would do if I had an early LT1...
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02-28-2011, 08:10 PM #30
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03-01-2011, 04:26 AM #31
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03-03-2011, 12:28 PM #32
- Join Date
- Nov 2010
- Location
- orlando fl
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- 33
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- 132
black- firebird formula 99
you can trick the car by using anti spark plug foulers buy four 18mm drill them out to i think a 1/2 inch or a lil more take two of the foulers and screw them onto your o2 censor and screw it back in and clear the code
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03-03-2011, 01:52 PM #33
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- Nov 2006
- Location
- Indianapolis
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- 58
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- 5,165
Black- 2000 WS6 6spd Hooker LT
^^^Huh?
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03-03-2011, 03:13 PM #34
- Join Date
- Nov 2010
- Location
- orlando fl
- Age
- 33
- Posts
- 132
black- firebird formula 99
its just a spacer a cheap way to fool the car to think that the cats are still there once you take your cats out it throws the code i did it to my car after i took out my cats and cleared the code and its never came back
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03-03-2011, 05:16 PM #35
- Join Date
- Apr 2008
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- Madison, WI
- Posts
- 7,001
1999 Formula WS6 M6-sold- 2001 Silverado Z71
He's talking about mechanical O2 simulators.
I made a mechanical O2 simulator for my Blazer with a hollowed converter and it worked great. Go to the parts store and buy 2 Help!brand spark plug anti-foulers.
Drill out the one to make room for the sensor and then screw them together like this:
This spaces the O2 sensor away from direct exhaust flow which makes the sensor read lazy because it only sampling a small amount of exhaust and simulates a fully functional converter.
It works!!! I've tried it.
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03-03-2011, 05:19 PM #36
- Join Date
- Feb 2009
- Location
- Mansfield, PA
- Posts
- 22,146
Black & Blue- '02 WS.6 / '07 Suburban
^^ What's funny is that is what Innovate wants me to do for my wideband. Any time I open my cutout or mash WOT, the sensor wigs out and goes into error mode.
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03-04-2011, 02:24 AM #37
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03-04-2011, 03:40 AM #38
- Join Date
- Apr 2008
- Location
- Madison, WI
- Posts
- 7,001
1999 Formula WS6 M6-sold- 2001 Silverado Z71
I sold the blazer, but had it working fine for about 5 or 6 months of daily driving.
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