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Re: Flat6 motorsports
Posted: Thu Dec 29, 2022 6:27 am
by Pcarnut
elm310 wrote: Wed Dec 28, 2022 5:59 pm
Pcarnut wrote: Tue Dec 27, 2022 2:56 pm
elm310 wrote: Tue Dec 20, 2022 10:13 am
I'm leaving the sport muffler from Porsche on but changing to catless downpipes and headers from Soul Performance.
Eric
Changing to Catless down pipes will you still pass emissions?
My question is, without cats, does the car still pass emissions?
It should pass emissions, since the actual physical size and appearance doesn't change. They just look to make sure you have a cat. So, it should pass without problems.
Eric
Interesting. I thought they put something in the tailpipe to check emissions levels, but maybe that was the old days. I have noticed they use a mirror to look under my trucks when I donate to the government every year for the BS.
Re: Flat6 motorsports
Posted: Fri Dec 30, 2022 5:28 pm
by elm310
Pcarnut wrote: Thu Dec 29, 2022 6:27 am
elm310 wrote: Wed Dec 28, 2022 5:59 pm
Pcarnut wrote: Tue Dec 27, 2022 2:56 pm
My question is, without cats, does the car still pass emissions?
It should pass emissions, since the actual physical size and appearance doesn't change. They just look to make sure you have a cat. So, it should pass without problems.
Eric
Interesting. I thought they put something in the tailpipe to check emissions levels, but maybe that was the old days. I have noticed they use a mirror to look under my trucks when I donate to the government every year for the BS.
On '95 and older, they will have to run the vehicle on the dyno and stick the sniffer sensor in one of the tailpipes. Then it will read the amount of Co2 that the car is producing. The higher the amount then the car foals and it is usually because of no cats. On newer car '96 and newer, it is OBDII and all of the readings are done through the computer, they are only checking for readiness, check engine light or codes and RPMs no Co2 and the cats are visual check on certain cars only.
Re: Flat6 motorsports
Posted: Fri Dec 30, 2022 8:45 pm
by Pcarnut
elm310 wrote: Fri Dec 30, 2022 5:28 pm
Pcarnut wrote: Thu Dec 29, 2022 6:27 am
elm310 wrote: Wed Dec 28, 2022 5:59 pm
It should pass emissions, since the actual physical size and appearance doesn't change. They just look to make sure you have a cat. So, it should pass without problems.
Eric
Interesting. I thought they put something in the tailpipe to check emissions levels, but maybe that was the old days. I have noticed they use a mirror to look under my trucks when I donate to the government every year for the BS.
On '95 and older, they will have to run the vehicle on the dyno and stick the sniffer sensor in one of the tailpipes. Then it will read the amount of Co2 that the car is producing. The higher the amount then the car foals and it is usually because of no cats. On newer car '96 and newer, it is OBDII and all of the readings are done through the computer, they are only checking for readiness, check engine light or codes and RPMs no Co2 and the cats are visual check on certain cars only.
What is the increase in performance by deleting the Cats?
Re: Flat6 motorsports
Posted: Sun Jan 01, 2023 4:52 pm
by elm310
Pcarnut wrote: Fri Dec 30, 2022 8:45 pm
elm310 wrote: Fri Dec 30, 2022 5:28 pm
Pcarnut wrote: Thu Dec 29, 2022 6:27 am
Interesting. I thought they put something in the tailpipe to check emissions levels, but maybe that was the old days. I have noticed they use a mirror to look under my trucks when I donate to the government every year for the BS.
On '95 and older, they will have to run the vehicle on the dyno and stick the sniffer sensor in one of the tailpipes. Then it will read the amount of Co2 that the car is producing. The higher the amount then the car foals and it is usually because of no cats. On newer car '96 and newer, it is OBDII and all of the readings are done through the computer, they are only checking for readiness, check engine light or codes and RPMs no Co2 and the cats are visual check on certain cars only.
What is the increase in performance by deleting the Cats?
I will have to look it up. I do not remember, but I know that it was substantial compared to a catted one. Especially if compared to the stock down pipes.
Eric