What are the concequences with a catless dp??? - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-29-2005, 11:51 AM   #21
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But the Cat won't slow you down.

Funny, didn't you as what the consequences were?
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Old 11-29-2005, 11:53 AM   #22
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Quote:
Originally Posted by Chad V
Why would you want to suffer performance and backpressure problems not to have it. I mean, you said you wanted a DP, but what do you think is going to improve with the cat deleted from the setup, mind you Im asking a performance question, cause without the cat, your exhaust will sound shotty and ugly.
how so? i know i got rid of my resonator and most ppl said it would sound like ****. i love it.
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Old 11-29-2005, 11:56 AM   #23
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You'll never get a visual inspection in indiana for no cat, I've removed it on three of my vehicles over the past several years, I even got a noise ordinance ticket one time with my old probe, but never hassled about the cat. Removing the cat will give you a noticable increase in exhaust resonation and raspyness. I would only remove it for performance, which would probably be minimal in this case. Because it really increases the exhaust tone levels inside the car which can sometimes be just plain annoying, especially with a flowmaster muffler.
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Old 11-29-2005, 12:07 PM   #24
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If your looking for a throaty sound, get a hi flow cat and a muffler instead of running the risk of getting caught without it, and dont give me the whole
Quote:
speeding isnt illegal till you get caught
cause itll be that time you dont remember when you take it to a dealer and put it on the life that you'll get fined.
Edit: its a figure of speech meaning itll be the one time you forget.

Just mind you, if you order a DP from ZZP, Intense or 3800 Performance, they include Hi-flows.
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Old 11-29-2005, 12:22 PM   #25
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thats not what i said. i said speeding is illegal and we all do it. im not gonna take it to a dealer.
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Old 11-29-2005, 12:30 PM   #26
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Quote:
Originally Posted by willwren
But the Cat won't slow you down.

Funny, didn't you as what the consequences were?
i asked what the car related concequences are, not legal or epa or anything like that.
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Old 11-29-2005, 01:24 PM   #27
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Quote:
Originally Posted by willwren
Hi-flow cats flow very well, tame the rotten sound our exhaust CAN make in the wrong setups, and for the 50 or 60 bucks at www.justmagnaflow.com , it can save you big headaches down the road.

Some OBD2 Bonnevilles may still need an O2 spoof downstream with a high-flow cat.

couldnt you just keep the stock o2 sensor? im not familiar with the 2000+ bonnies, but i know i plan on keeping my o2 sensor by using one of these http://cgi.ebay.com/ebaymotors/O2-Se...spagenameZWDVW it will go right after the cat, the same general location of the stock one. not sure if this could be adapted to work on a Bonneville or not, but just thought id share.
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Old 11-29-2005, 01:34 PM   #28
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Quote:
Originally Posted by LittleHoov
Quote:
Originally Posted by willwren
Hi-flow cats flow very well, tame the rotten sound our exhaust CAN make in the wrong setups, and for the 50 or 60 bucks at www.justmagnaflow.com , it can save you big headaches down the road.

Some OBD2 Bonnevilles may still need an O2 spoof downstream with a high-flow cat.

couldnt you just keep the stock o2 sensor? im not familiar with the 2000+ bonnies, but i know i plan on keeping my o2 sensor by using one of these http://cgi.ebay.com/ebaymotors/O2-Se...spagenameZWDVW it will go right after the cat, the same general location of the stock one. not sure if this could be adapted to work on a Bonneville or not, but just thought id share.
OBD2 Bonnevilles (and all other OBD2 vehicles ALREADY HAVE an O2 after the cat. You don't need that bung. The problem is the high-flow cats can sometimes mess with a rear O2, so some people have to switch to a spoof when they go with a performance cat.
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Old 11-29-2005, 01:45 PM   #29
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Quote:
Originally Posted by ELMACHOGERACHO
Quote:
Originally Posted by willwren
But the Cat won't slow you down.

Funny, didn't you as what the consequences were?
i asked what the car related concequences are, not legal or epa or anything like that.
Your car will sound like A * *
Your car will smell like A * *
Your fuel mileage may be A * *

And you'll gain nothing but A * *.
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Old 11-29-2005, 01:50 PM   #30
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And that sums uip the consequences of this one. Can I have my $250 or what?
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