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Y pipe

khaledsamy36

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khaledsamy36 Enthusiast

khaledsamy36

Posted
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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 Senior Enthusiast

M1ck3y

Posted
Posted

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 Enthusiast

00pooterSS

Posted
Posted

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 Enthusiast

khaledsamy36

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Posted

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 Senior Enthusiast

SirenRed16

Posted
Posted
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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