2020 6.6 L8T 3rd Cat Delete

[L8Tmike]

Just wanted to point out that I hollowed out the 3rd cat and it felt a lot better.  And shift point went up to 5500rpm from 5300rpm. Truck only has 400 miles but I’m a believer in breaking them In hard . Anyway the sound is still quiet which I like . I hate loud . It ok me about 2 hours because the pipe is curved so it was kind of hard to break up the stuff . Used a breaker bar and had to start the car about 7 times And accelerate to blow the stuff out . Juts unbolt The cat back and stick a metal bar And  start hitting with a hammer till it’s all gone . Free mod and you can feel it . 

[newdude]

Placebo......just like cat back exhaust.....

 

 

[Gagliano7]

On 3/10/2020 at 9:15 AM, newdude said:

Placebo......just like cat back exhaust.....

 

 

There is data to  backup catbacks adding power but you are right that you can't feel 5 to 10hp like some try to claim.