How to remove stock cats
Thread Starter
Instructor
Joined: Aug 2017
Posts: 152
Likes: 24
From: Ottawa ON
How to remove stock cats
Hey guys,
I don't like to share my own YouTube videos on here but I figured I'd share this one because I have a feeling a lot of people will be doing some kind of cat delete or sport cat substitution, and I know that there is absolutely no tutorials online for it... So I figured I'd share this in hopes that it helps some of you DIY guys out!
I paired up with Fabspeed and did their cat bypass pipes because I wanted the car to be loud... They have a bunch of different options and this video will obviously work for any type of cat install / removal.
I want to be transparent - this video is essentially a before sound test (with DBs) and an install video. I'm going to be filming the after shots later today and will upload a separate video for that. If you guys are interested, let me know and I can post that one as well!
Hope this helps some of you out!
I don't like to share my own YouTube videos on here but I figured I'd share this one because I have a feeling a lot of people will be doing some kind of cat delete or sport cat substitution, and I know that there is absolutely no tutorials online for it... So I figured I'd share this in hopes that it helps some of you DIY guys out!
I paired up with Fabspeed and did their cat bypass pipes because I wanted the car to be loud... They have a bunch of different options and this video will obviously work for any type of cat install / removal.
I want to be transparent - this video is essentially a before sound test (with DBs) and an install video. I'm going to be filming the after shots later today and will upload a separate video for that. If you guys are interested, let me know and I can post that one as well!
Hope this helps some of you out!
Supporting Vendor
Joined: Jul 2019
Posts: 885
Likes: 887
From: Philadelphia
Typically removing catalytic should 80% of the time or more get a check engine light. On certain cars it’s odd like GT3 s and others you don’t get a light ......other times a dummy light. Car runs great like a mclaren but light is on. Some people can ignore it while others go mad and worry.
catbypass pipes are for 100% racing competition and off road use closed course only and not for USA public roads.
many years ago I designed mini- catalytic converters that are 400 cell and can be a good solution for running catbypass pipes or sport cats on cars that might get a p420/p430 code.
visualize 90 degree and 45 degree mini 2” long small catalytic converters in small pioes you screw into the 2ndary oxygen sensor port. With a jam nut you tighten them then install the factory 2ndary o2 sensor and tighten. Often does the trick because there is a seriously long cat installed. This is not a o2 fouler. Called an oxygen sensor spacer with catalytic converter
https://www.fabspeed.com/universal-9...nverters-pair/
catbypass pipes are for 100% racing competition and off road use closed course only and not for USA public roads.
many years ago I designed mini- catalytic converters that are 400 cell and can be a good solution for running catbypass pipes or sport cats on cars that might get a p420/p430 code.
visualize 90 degree and 45 degree mini 2” long small catalytic converters in small pioes you screw into the 2ndary oxygen sensor port. With a jam nut you tighten them then install the factory 2ndary o2 sensor and tighten. Often does the trick because there is a seriously long cat installed. This is not a o2 fouler. Called an oxygen sensor spacer with catalytic converter
https://www.fabspeed.com/universal-9...nverters-pair/
Team Owner
Joined: Feb 2013
Posts: 22,598
Likes: 14,556
Supporting Vendor
Joined: Jul 2019
Posts: 885
Likes: 887
From: Philadelphia
The stock OEM Corvette C8 catalytic converters weigh 26.35 pounds 12 kg
there are left and right side catalytic converters ceramic based matrixs and bolt-on heat shields.
The rear C8 stock OEM muffler weighs 76 pounds and 34.5 kg This is the complete system with 4 square welded tips. Its intersteing that GM did not have slide on / bolt-on tips like other mid-engine companies.
Hope everyone had a great weekend and is safe and happy.
there are left and right side catalytic converters ceramic based matrixs and bolt-on heat shields.
The rear C8 stock OEM muffler weighs 76 pounds and 34.5 kg This is the complete system with 4 square welded tips. Its intersteing that GM did not have slide on / bolt-on tips like other mid-engine companies.
Hope everyone had a great weekend and is safe and happy.
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Burning Brakes
Joined: Aug 2019
Posts: 1,085
Likes: 582
What size is the inlet & outlet pipe. 3 inch?
I own a car shop, and fabricate a lot of exhaust systems. I want to make my own converters. And order them now. Get a head start.
I'm still waiting for my car. Supposed to come off the line today.
I own a car shop, and fabricate a lot of exhaust systems. I want to make my own converters. And order them now. Get a head start.
I'm still waiting for my car. Supposed to come off the line today.
Instructor
Joined: Aug 2008
Posts: 220
Likes: 111
From: az
The stock OEM Corvette C8 catalytic converters weigh 26.35 pounds 12 kg
there are left and right side catalytic converters ceramic based matrixs and bolt-on heat shields.
The rear C8 stock OEM muffler weighs 76 pounds and 34.5 kg This is the complete system with 4 square welded tips. Its intersteing that GM did not have slide on / bolt-on tips like other mid-engine companies.
Hope everyone had a great weekend and is safe and happy.
there are left and right side catalytic converters ceramic based matrixs and bolt-on heat shields.
The rear C8 stock OEM muffler weighs 76 pounds and 34.5 kg This is the complete system with 4 square welded tips. Its intersteing that GM did not have slide on / bolt-on tips like other mid-engine companies.
Hope everyone had a great weekend and is safe and happy.
Last edited by SL41; Jun 16, 2020 at 10:24 AM.
Thread Starter
Instructor
Joined: Aug 2017
Posts: 152
Likes: 24
From: Ottawa ON
I have over 100 miles now without a CEL. Now I must say I've been using 94 octane fuel, don't think that this has a difference but I have seen a few people with the same setup say they had a CEL but they only had 91 octane available to them
Thread Starter
Instructor
Joined: Aug 2017
Posts: 152
Likes: 24
From: Ottawa ON
If you want I can go and measure my stock cats? Is that what you need?
