Cat bypass quetions
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Intermediate
Joined: Apr 2022
Posts: 45
Likes: 25
From: Florida
Cat bypass quetions
I have a C8 with the performance exhaust. It's too quiet for my liking since I came from a F Type R. I've been deliberating between sport cats and cat-bypass for some time and have decided to go with cat-bypass pipes from 2M. Mostly because I've never had a straight piped car and my allocation will be coming up for the Z06 in about a year so I figured I'd just go for it since it's just a year to try it out. Also we don't do emissions in Florida.
Questions I have for those that have done this:
1. Which gaskets did you go with? I've read the 2M gaskets are pretty terrible. If you did the OEM ones, what's the part number? I can't find it anywhere
2. These don't come with the O2 spacer/mini cat correct? You need to buy it separately? I reached out to 2M a week ago and it's been radio silence
3. If I need to buy O2 spacer/mini cat separately, which one do you recommend? The one from 2M? Or is there a better one?
4. What has been everyone's experience with these with CELs? I read that you *shouldn't* get a CEL if you use O2 spacer/mini cat but it would be reassuring to hear people comment that have had them for some time.
Appreciate it. Looking to order these Monday to liven up the exhaust.
Questions I have for those that have done this:
1. Which gaskets did you go with? I've read the 2M gaskets are pretty terrible. If you did the OEM ones, what's the part number? I can't find it anywhere
2. These don't come with the O2 spacer/mini cat correct? You need to buy it separately? I reached out to 2M a week ago and it's been radio silence
3. If I need to buy O2 spacer/mini cat separately, which one do you recommend? The one from 2M? Or is there a better one?
4. What has been everyone's experience with these with CELs? I read that you *shouldn't* get a CEL if you use O2 spacer/mini cat but it would be reassuring to hear people comment that have had them for some time.
Appreciate it. Looking to order these Monday to liven up the exhaust.
Pro
Joined: Aug 2012
Posts: 657
Likes: 192
From: Memphis Tennessee
1. Which gaskets did you go with? I've read the 2M gaskets are pretty terrible. If you did the OEM ones, what's the part number? I can't find it anywhere
2. These don't come with the O2 spacer/mini cat correct? You need to buy it separately? I reached out to 2M a week ago and it's been radio silence
3. If I need to buy O2 spacer/mini cat separately, which one do you recommend? The one from 2M? Or is there a better one?
4. What has been everyone's experience with these with CELs? I read that you *shouldn't* get a CEL if you use O2 spacer/mini cat but it would be reassuring to hear people comment that have had them for some time.
2. These don't come with the O2 spacer/mini cat correct? You need to buy it separately? I reached out to 2M a week ago and it's been radio silence
3. If I need to buy O2 spacer/mini cat separately, which one do you recommend? The one from 2M? Or is there a better one?
4. What has been everyone's experience with these with CELs? I read that you *shouldn't* get a CEL if you use O2 spacer/mini cat but it would be reassuring to hear people comment that have had them for some time.
1.) Listed in my link below
2.) They do come with the cat delete pipes from 2M. It's even listed on their website on the page for them. The reason it's been radio silent is because their customer support gets hammered by people asking questions that are easily found either on the product page or in the FAQ on their site.
3.) See #2
4.) I've had their cat deletes/o2 spacers for over 5000 miles and have never had a CEL come on.
I'd recommend going with the cat deletes instead of the sport cats. It'll be the best sounding/loudest and less weight in the car.
Link to write-up - https://www.corvetteforum.com/forums...post1603888106
Link to sound clip -
Dig
Joined: Jan 2006
Posts: 5,467
Likes: 1,127
From: Port Saint Lucie FLORIDA & HONDURAS
See below for a write-up I did on this already with their cat deletes but I'll answer your questions as best I can from memory:
1.) Listed in my link below
2.) They do come with the cat delete pipes from 2M. It's even listed on their website on the page for them. The reason it's been radio silent is because their customer support gets hammered by people asking questions that are easily found either on the product page or in the FAQ on their site.
3.) See #2
4.) I've had their cat deletes/o2 spacers for over 5000 miles and have never had a CEL come on.
I'd recommend going with the cat deletes instead of the sport cats. It'll be the best sounding/loudest and less weight in the car.
Link to write-up - https://www.corvetteforum.com/forums...post1603888106
Link to sound clip - https://www.youtube.com/watch?v=QALtR-yfqxM&t=7s
1.) Listed in my link below
2.) They do come with the cat delete pipes from 2M. It's even listed on their website on the page for them. The reason it's been radio silent is because their customer support gets hammered by people asking questions that are easily found either on the product page or in the FAQ on their site.
3.) See #2
4.) I've had their cat deletes/o2 spacers for over 5000 miles and have never had a CEL come on.
I'd recommend going with the cat deletes instead of the sport cats. It'll be the best sounding/loudest and less weight in the car.
Link to write-up - https://www.corvetteforum.com/forums...post1603888106
Link to sound clip - https://www.youtube.com/watch?v=QALtR-yfqxM&t=7s
Pro
Joined: Aug 2012
Posts: 657
Likes: 192
From: Memphis Tennessee
Well, I also have a muffler delete on top of the cat delete so it is pretty loud on the outside lol. You'll be plenty happy as I like my cars to be as loud as possible. So if I'm happy you'll be happy.
