2018 silverado 5.3l headers and catless y pipe

[Chevyguyltz]

Hey guys I'm going to be installing headers and a catless y pipe on my truck this week. The shop that I trust for tuning is booked up until November. With that being said is it safe to drive the truck until then? I am going to be driving to Ohio and back on Sunday. So I just want to make sure it will be safe to drive. I do have a cold air intake and a corsa sport cat back exhaust currently on the truck. I do have a edge evolution cts3 tuner installed in the truck but went back to the stock tune because I'm not sure if being on their street tune while the headers and y pipe are on will mess up the motor. Any help is greatly appreciated 

[langston1726]

I’m guessing they’ll be some mixed opinions on this but I think as long as you’re not doing WOT pulls, it will probably be okay. Headers will typically make the truck run a little  lean with the added air flow. I ran mine untuned for a couple weeks after installing headers with no issues. You will have a check engine light though.

 

It might be worth asking what your tuner thinks. Btw that Corsa is going to be very loud with headers and no cats. I’ve heard a Vibrant resonator will really help calm down the rasp and clap. Then again you may want it loud. 

[newdude]

Can you put off the install until closer to the tuning date?  

[Chevyguyltz]

I could put off the install closer to the tuning date

[rlcole321]

So, you won't be running any Cat's on the truck?