[Z06] How many horses are no cat X-pipe worth vs. catted X-pipe on 425RWHP car?
05-16-2011, 07:40 PM
#1
Instructor
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Location: Lebanon New Hampshire
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How many horses are no cat X-pipe worth vs. catted X-pipe on 425RWHP car?
I am sure it has been asked many times but I searched and can't find any information...
I live in NH and I can easily get away with not having cats. If it is worth some extra horses I will opt for the non catted x pipe when I buy my LG streets and X-pipe.
I also don't want stinky exhaust, but that is probably more a function of a good, precise, tune.
I live in NH and I can easily get away with not having cats. If it is worth some extra horses I will opt for the non catted x pipe when I buy my LG streets and X-pipe.
I also don't want stinky exhaust, but that is probably more a function of a good, precise, tune.
05-16-2011, 08:31 PM
#4
Burning Brakes
05-17-2011, 01:08 PM
#6
Melting Slicks
05-17-2011, 02:35 PM
#8
Race Director
Cam overlap, and tuning are the most important factors in the stink equation. I think you'll be lucky to see much improvement in no cats/HF cats situation. I would guess -3 to +4 HP difference. It may actually dyno less. Not worth changing, assuming the cats are doing their job.
05-17-2011, 04:19 PM
#11
Team Owner
They are an emissions device that adds cost, weight, heat, and reduces power. But there are a lot of members in this section who have cats for whatever reason who will get all offended if you don't. 
05-17-2011, 05:50 PM
#12
For some reason if you drive a minivan 30k miles a year you are okay but if you drive your corvette without cats 2000 miles a year you are a polluter and destroying the earth
05-18-2011, 11:54 PM
#13
Melting Slicks
05-20-2011, 06:58 AM
#14
Melting Slicks
I'm not a tree hugger, but can't understand why people would not use cats for anything less than a track car. 5 hp, 10 hp, 20#, so what? You'll never feel or see the difference, and your 2000 mile a year car will make a years worth of pollutants.
Non catted cars may not all stink of fuel, but you can definately tell the non catted cars when you drive behind them.
Flame away....
05-20-2011, 07:35 AM
#15
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agreed!
I'm not a tree hugger, but can't understand why people would not use cats for anything less than a track car. 5 hp, 10 hp, 20#, so what? You'll never feel or see the difference, and your 2000 mile a year car will make a years worth of pollutants.
Non catted cars may not all stink of fuel, but you can definately tell the non catted cars when you drive behind them.
Flame away....
I'm not a tree hugger, but can't understand why people would not use cats for anything less than a track car. 5 hp, 10 hp, 20#, so what? You'll never feel or see the difference, and your 2000 mile a year car will make a years worth of pollutants.
Non catted cars may not all stink of fuel, but you can definately tell the non catted cars when you drive behind them.
Flame away....
