Getting the full exhaust
07-20-2008, 04:51 AM
#1
Instructor
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Getting the full exhaust
Hey guys I had just change the mufflers or should i say the chambers of my car to borla. And I already got use to the noise. ANd the guy from the muffler shop recommended to go with the full straight pipe and with the cats off. Can you guys help me. Is it going to be real loud or how.
P.S dont really knoe that much about the exhaust stuff.
P.S dont really knoe that much about the exhaust stuff.
07-20-2008, 08:22 AM
#4
Instructor
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I am sure it varies state to state but in Arkansas it is illegal to remove cats from gas burning vehicles with out replacing them. We don't even have any muffler shops around here that would even offer to do it as they could get closed down.
07-20-2008, 09:43 AM
#5
Burning Brakes
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High flow cats with catback exhaust would be recommended. Lack of back pressure to the engine leads to engine problems. The pros do it because they only plan on getting 1 race in before rebuilding.
07-20-2008, 11:04 AM
#9
Melting Slicks
07-20-2008, 11:14 AM
#10
Team Owner
07-20-2008, 11:41 AM
#12
Le Mans Master
Hey guys I had just change the mufflers or should i say the chambers of my car to borla. And I already got use to the noise. ANd the guy from the muffler shop recommended to go with the full straight pipe and with the cats off. Can you guys help me. Is it going to be real loud or how.
P.S dont really knoe that much about the exhaust stuff.
P.S dont really knoe that much about the exhaust stuff.
Both changes are completely obnoxious. Obnoxious people will disagree.
07-20-2008, 11:47 AM
#13
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You mean take off the Borlas and run straight pipes? The car will be outrageously, painfully loud. Take off the cats and you've turned a ULEV into a code-throwing, inspection-failing, fume-generator for no perceptible power gain.
Both changes are completely obnoxious. Obnoxious people will disagree.
Both changes are completely obnoxious. Obnoxious people will disagree.
07-20-2008, 11:53 AM
#14
Team Owner
Pro Mechanic
Although that post is terrible, the posts that claim taking the cats off will provide no discernible benefit are correct, but not because of what the above poster is claiming. The stock cats flow well enough that removing them will not help performance (on a stock or stockish car) discernibly. AND you would have to get a tune, to prevent error codes. And yes, it would unnecessarily spew emissions w/no cats. Basically, if you're asking about removing the cats, neither your car nor your car knowledge are to the point that you should be removing the cats, IMO.
Last edited by Tom400CFI; 07-20-2008 at 12:02 PM.
07-20-2008, 11:54 AM
#15
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07-20-2008, 01:03 PM
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You mean take off the Borlas and run straight pipes? The car will be outrageously, painfully loud. Take off the cats and you've turned a ULEV into a code-throwing, inspection-failing, fume-generator for no perceptible power gain.
Both changes are completely obnoxious. Obnoxious people will disagree.
Both changes are completely obnoxious. Obnoxious people will disagree.
Instead of wasting you money run the full Borla Exhaust. You will have more flow, better sound and you won't have to worry about inspections or error messages.