C8 Tech/Performance Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by: CARiD

2m fabrication

Thread Tools
 
Search this Thread
 
Old Feb 3, 2021 | 05:04 PM
  #81  
Billy20's Avatar
Billy20
Pro
 
Joined: Apr 2020
Posts: 637
Likes: 221
From: Irvine CA
Default

Originally Posted by sparro
In case anyone is interested in doing headers on an HTC... don't, none of the current ones fit. Too tall and will hit. You'll have to wait for an HTC version to come out.
ARH has HTC headers
Reply
Old Feb 3, 2021 | 05:14 PM
  #82  
Tenny's Avatar
Tenny
Intermediate
 
Joined: Jul 2019
Posts: 37
Likes: 10
From: Houston TX
Default

Originally Posted by the_sim
I ordered this product to wrap my cats. I figured it was easy and cheap enough to wrap them before I install them.
Based on what I've read is that wrap like that will get the cats too hot and they'll die prematurely.
Reply
Old Feb 3, 2021 | 05:22 PM
  #83  
the_sim's Avatar
the_sim
Intermediate
 
Joined: Sep 2019
Posts: 46
Likes: 33
Default

Originally Posted by Tenny
Based on what I've read is that wrap like that will get the cats too hot and they'll die prematurely.
I guess I'm not wrapping the cats with this tape then.
Thanks!
Reply
Old Feb 3, 2021 | 05:28 PM
  #84  
Tenny's Avatar
Tenny
Intermediate
 
Joined: Jul 2019
Posts: 37
Likes: 10
From: Houston TX
Default

I think this will work "better" as it'll shield more, but not trap it in as much?
Amazon Amazon
Reply
Old Feb 3, 2021 | 07:49 PM
  #85  
the lark's Avatar
the lark
Burning Brakes
 
Joined: Aug 2019
Posts: 1,085
Likes: 582
Default


I always wrapped my converters. Never had one die early. But then again I do not keep my cars long. Here is a picture of my American racing headers . I wrapped them with the titanium lava wrap. From Amazon.

I also had my headers cats and mufflers and mid pipes jet coated. Then I wrapped them. I know it’s a little over kill. But you need to keep the engine compartment cool as possible.
This is a one off exhaust with 2 mufflers and it’s center exit. Like c5-6&7.

This is the left muffler. It’s jet coated black

This is the right side. The black muffler is behind the screen.
Reply
Old Feb 3, 2021 | 09:18 PM
  #86  
the_sim's Avatar
the_sim
Intermediate
 
Joined: Sep 2019
Posts: 46
Likes: 33
Default

Originally Posted by Tenny
Based on what I've read is that wrap like that will get the cats too hot and they'll die prematurely.
2M said that it was fine to wrap the cats. They said that cheap ceramic cats might fail if wrapped but not theirs.

Last edited by the_sim; Feb 3, 2021 at 09:49 PM.
Reply
Old Feb 3, 2021 | 09:47 PM
  #87  
Tenny's Avatar
Tenny
Intermediate
 
Joined: Jul 2019
Posts: 37
Likes: 10
From: Houston TX
Default

Originally Posted by the lark

I always wrapped my converters. Never had one die early. But then again I do not keep my cars long. Here is a picture of my American racing headers . I wrapped them with the titanium lava wrap. From Amazon.

I also had my headers cats and mufflers and mid pipes jet coated. Then I wrapped them. I know it’s a little over kill. But you need to keep the engine compartment cool as possible.
This is a one off exhaust with 2 mufflers and it’s center exit. Like c5-6&7.

This is the left muffler. It’s jet coated black

This is the right side. The black muffler is behind the screen.
Awesome, how much wrap did that take? Looks like 2" width.
Reply
Old Feb 3, 2021 | 09:49 PM
  #88  
Tenny's Avatar
Tenny
Intermediate
 
Joined: Jul 2019
Posts: 37
Likes: 10
From: Houston TX
Default

Originally Posted by the_sim
2M said that it was fine to warp the cats. They said that cheap ceramic cats might fail if wrapped but not theirs.
That makes this much easier. I guess becuase there's less of the material that it doesn't slow down as much so it doesn't heat up as much?

Either way I think I'll just wrap it for now. Everything I'm reading is people saying not to in general, but then several people say they have wrapped it and had no issues.

Last edited by Tenny; Feb 3, 2021 at 09:49 PM.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-1

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-2

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-3

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-4

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-5

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-6

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-7

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-8

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-9

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
Old Feb 4, 2021 | 06:15 AM
  #89  
the lark's Avatar
the lark
Burning Brakes
 
Joined: Aug 2019
Posts: 1,085
Likes: 582
Default

Originally Posted by Tenny
Awesome, how much wrap did that take? Looks like 2" width.
One roll per header. Both cats took about 2/3rds of a roll.
Reply
Old Feb 4, 2021 | 09:08 AM
  #90  
Tenny's Avatar
Tenny
Intermediate
 
Joined: Jul 2019
Posts: 37
Likes: 10
From: Houston TX
Default

Originally Posted by the lark
One roll per header. Both cats took about 2/3rds of a roll.
50ft rolls? 30 ft rolls? Sorry I am just trying to make sure I have enough when it comes in.

I ordered two rolls last night which will arrive on Sunday and the headers arrive Monday. I'm going to get a baseline dyno today, after I install both (nothing else has been done) I'll do another dyno on a "similar" day weather wise. I originally wanted to do just the headers, then just the cats, then both but too much work and the shops are all charging way too much for dyno time. Don't want to wait for 4 dyno days...
Reply
Old Feb 7, 2021 | 05:38 PM
  #91  
Kiser64's Avatar
Kiser64
Racer
10 Year Member
 
Joined: Jul 2011
Posts: 466
Likes: 24
From: Saint Augustine Florida
St. Jude Donor '12
Default

Originally Posted by the lark

I always wrapped my converters. Never had one die early. But then again I do not keep my cars long. Here is a picture of my American racing headers . I wrapped them with the titanium lava wrap. From Amazon.

I also had my headers cats and mufflers and mid pipes jet coated. Then I wrapped them. I know it’s a little over kill. But you need to keep the engine compartment cool as possible.
This is a one off exhaust with 2 mufflers and it’s center exit. Like c5-6&7.

This is the left muffler. It’s jet coated black

This is the right side. The black muffler is behind the screen.
So....Can we get a shot from the rear with the center exit exhaust and a pic of the engine compartment? Thanks in advance-just planning ahead...!!
Reply
Old Feb 7, 2021 | 07:31 PM
  #92  
the lark's Avatar
the lark
Burning Brakes
 
Joined: Aug 2019
Posts: 1,085
Likes: 582
Default




It’s not done yet. I removed the square tips. And replaced them with borla tips Naturally I had to modify the rear diffuser to except the center exit exhaust. So it’s now being made into carbon fiber. After I get it back I will post some finished pics with a video.

Reply
Old Feb 8, 2021 | 04:59 PM
  #93  
Tenny's Avatar
Tenny
Intermediate
 
Joined: Jul 2019
Posts: 37
Likes: 10
From: Houston TX
Default

Name:  PzABgV8.png
Views: 1281
Size:  4.91 MB

Name:  STO46vI.jpg
Views: 1174
Size:  360.1 KB

They arrived on friday and I got it all wrapped on Friday/Sat (used 3x 2"x50' rolls) then removed the old ones on Sat afternoon/evening and installed them on Sunday morning. Sounds great, no idea on performance. Took them for more of a drive today and they sound great. I tried to get a video of the popping with a gopro and it was all wind noise.

After about 10 miles of driving I did get a CEL.
Name:  utUH20N.png
Views: 1153
Size:  650.9 KB

Anyone else get a CEL from the sport cats?

The P25A2 came on when the car was on the dyno and the shop didn't know how to dyno the C8.... Although it went off Saturday before I started working on it. Not sure if it's still just hanging around or what. The rest seem to be related to the cats / cylinder deactivation / fuel pump.
Reply
Old Feb 9, 2021 | 04:27 AM
  #94  
HeadTurner's Avatar
HeadTurner
Racer
15 Year Member
 
Joined: Sep 2008
Posts: 472
Likes: 78
From: San Antonio TX
Default

No CEL for me, I have had them on for about 600 miles. Maybe you have a connector that is not snapped in all the way.

The C8 does not like to be on the Dyno... you will have to turn all Traction control off and drive it for a few minutes on the Dyno to get through all the faults then you can do a couple pulls. P.S. make sure Frunk and Hatch are closed.

Reply
Old Feb 9, 2021 | 08:52 AM
  #95  
Tenny's Avatar
Tenny
Intermediate
 
Joined: Jul 2019
Posts: 37
Likes: 10
From: Houston TX
Default

Originally Posted by HeadTurner
No CEL for me, I have had them on for about 600 miles. Maybe you have a connector that is not snapped in all the way.

The C8 does not like to be on the Dyno... you will have to turn all Traction control off and drive it for a few minutes on the Dyno to get through all the faults then you can do a couple pulls. P.S. make sure Frunk and Hatch are closed.
Yeah I learned that on the dyno you need to drive until the abs pops on. Sadly it through the drivetrain faults before then.

Did you reset the ecu when you put it back together? I didn't disconnect the battery when I worked on it.

I'm wondering if it's looking how efficient it was before (original cat) and comparing it to now (sport cat) and noticing it isn't as good as previously. Where as if I reset the ecu maybe it would set the baseline as the sport cat and be happy.
Reply
Old Feb 9, 2021 | 10:05 AM
  #96  
sparro's Avatar
sparro
Thread Starter
Instructor
Liked
Loved
Community Favorite
 
Joined: May 2019
Posts: 211
Likes: 133
From: Toronto, Ontario, CANADA
Default

I have only the cats installed, headers were too tall for the vert. So far no CEL and the sound is loud. I did wrap the cats with some blankets to keep some heat down in the enclosed vert engine bay.

Reply
Old Feb 9, 2021 | 10:15 AM
  #97  
sparro's Avatar
sparro
Thread Starter
Instructor
Liked
Loved
Community Favorite
 
Joined: May 2019
Posts: 211
Likes: 133
From: Toronto, Ontario, CANADA
Default

I partially wrapped my cats too...


Reply

Get notified of new replies

To 2m fabrication

Old Feb 9, 2021 | 11:24 AM
  #98  
Tenny's Avatar
Tenny
Intermediate
 
Joined: Jul 2019
Posts: 37
Likes: 10
From: Houston TX
Default

Originally Posted by sparro
I have only the cats installed, headers were too tall for the vert. So far no CEL and the sound is loud. I did wrap the cats with some blankets to keep some heat down in the enclosed vert engine bay.

https://www.youtube.com/watch?v=lUbF...annel=WRPDRIVE
Did you clear the ECU / disconnect battery when you installed? What heat wrap did you use on the cats? I am probably going to switch to something different eventually. The cats shouldn't be terribly hard to pull out and swap back in.

Last edited by Tenny; Feb 9, 2021 at 11:24 AM.
Reply
Old Feb 9, 2021 | 07:59 PM
  #99  
sparro's Avatar
sparro
Thread Starter
Instructor
Liked
Loved
Community Favorite
 
Joined: May 2019
Posts: 211
Likes: 133
From: Toronto, Ontario, CANADA
Default

Originally Posted by Tenny
Did you clear the ECU / disconnect battery when you installed? What heat wrap did you use on the cats? I am probably going to switch to something different eventually. The cats shouldn't be terribly hard to pull out and swap back in.
I did not disconnect the battery when I did my install. When I did some test starts to check for exhaust leaks "without the air box on and about three connectors unconnected" my CEL came on and threw some errors in the display panel. After I confirmed there were no exhaust leaks I shut it off and then disconnected the positive terminal for about 10 minutes to clear whatever it was throwing. I reinstalled the airbox and connected all the electrical connecters and I was good. No codes so far and it sounds great. I get pops and cracks and its loud!
Reply
Old Feb 9, 2021 | 08:13 PM
  #100  
the lark's Avatar
the lark
Burning Brakes
 
Joined: Aug 2019
Posts: 1,085
Likes: 582
Default

Sounds like the converters may not have enough precious metals in them.
If so the light will keep coming on.
Also, go get your self a code reader, that way you can read your codes. And erase them properly.
Don’t keep unplugging the battery, to clear the codes. Not good.
Reply



All times are GMT -4. The time now is 09:30 AM.

story-0
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-1
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-2
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-3
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-4
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-5
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-6
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-7
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-8
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-9
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE