Y pipe

[khaledsamy36]

Looking for someone with the same setup , ( I have 2017 Sierra 5.3 with borla atak cat back , since my car is lifted with big tires , looking to add some power ( without voiding the warranty ) .

I know y pipe will add power but also it will add sound , anyone fixed a y pipe without dramatically increasing the exhaust sound as I don’t want to wake the Neighbors

 

 

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[M1ck3y]

If your changing the ypipe you mays well do headers. They both affect warranty. A lot of the power gain from headers is from the y pipe with high flow cats/offroad, and all of the noise is because of that.

[00pooterSS]

The factory y pipe is actually nicely made and the tubes are pretty big. Replacing only the Y pipe would be a headache an you probably wouldn't gain any power.

I noticed more of a power gain from cutting the exhaust flapper out and changing the muffler next to it than I noticed from long tube headers and an off road y pipe. 

[khaledsamy36]

After checking with dealer here , headers by itself will not void warranty , programming will .
So anyone aware of a headers that does not throw CEL ?
I have ARH headers ( mid length in my corvette and it does not through CEL ) , not able to find the same for Sierra .




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[SirenRed16]

After checking with dealer here , headers by itself will not void warranty , programming will .
So anyone aware of a headers that does not throw CEL ?
I have ARH headers ( mid length in my corvette and it does not through CEL ) , not able to find the same for Sierra .




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I'm not 100% sure but I believe shorty headers won't throw CEL. I would also get the dealer saying the headers won't void warranty in writing for future reference.

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