Cat delete on 2018 5.3 silverado

[king_castro_91]

Hi everyone I'm thinking about straight piping my 2018 silverado 5.3 not for the sound but because I been doing research and it is convincing me that it will allow my engine to breathe better thus extending the life of the engine I'm wondering if anyone has had any experience with this and what real life pros and cons have you all experienced

[Buckwild27]

3 hours ago, king_castro_91 said:

Hi everyone I'm thinking about straight piping my 2018 silverado 5.3 not for the sound but because I been doing research and it is convincing me that it will allow my engine to breathe better thus extending the life of the engine I'm wondering if anyone has had any experience with this and what real life pros and cons have you all experienced

If you mean straight piped after the 2 required cats then. I have done this on my 2014. I'm assuming you have the AFM turned off. The truck will sound like crap in 4cyl mode straight piped. 

[KARNUT]

I’ve always done exhaust on my trucks. I don’t delete my cats. I’ve deleted mufflers. As I’ve gotten older I’ve wanted more of a tuned exhaust more in the background. As far as the cats wouldn’t that trip the light? And in some areas there could be a fine and no passing the vehicle inspection. And lastly cats flow pretty good these days. You could always save up for headers if you really want to increase exhaust flow. And if you don’t do something about the V-4 you’ll hate it. 

[asilverblazer]

15 hours ago, king_castro_91 said:

Hi everyone I'm thinking about straight piping my 2018 silverado 5.3 not for the sound but because I been doing research and it is convincing me that it will allow my engine to breathe better thus extending the life of the engine I'm wondering if anyone has had any experience with this and what real life pros and cons have you all experienced

You need better research materials. It WILL NOT extend the life of the engine.

Pros: ...

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Cons: Sound worse

Cost money

Check engine light

Failed inspection

Lower resale

 

What parts in front of the exhaust system do you think are going to last longer? 

 

Do you think your small intestines care what kind of shape your @$$hole is in?

[txab]

How will you beat the inspection process in your state?

[rlcole321]

I did long tubes and built a full 3" single exhaust (along with a DOD delete cam kit) on my 18 'Rado and use my factory two cats and all 4 O2's, using an open flowmaster muffler and resonator, it sounds great and great power and low end torque. But you'll need to learn how to use a HPTuner system.