GMC Sierra 1500 Flowmaster Exhaust

stock 305 motor drive-by at approximately 1700 RPMs in third gear.

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2014 Sierra 5.3L Corsa Sport - In Cab Exhaust
A short video with the sound of a Corsa Sport cat back Exhaust system inside the cab of a 2014 Sierra with the windows up. You can hear the Exhaust note as well as when it flips to V4 mode. Here is the Startup sound: https://www.youtube.com/watch?v=q1YqYYcqBv4 Here is another in cab Exhaust video: https://www.youtube.com/watch?v=7vT2zEx7Uqw





2012 GMC Sierra Before&After Exhaust. (FLOWMASTER SUPER 10)
The truck has the 5.3 v8, 3inch in, 2 and a 1/2 inch out, 3 and a 1/2 inch rolled tips.





Flowmaster Cat-Back Exhaust Install on 2011 GMC Sierra
Installation of a Flowmaster Force II Cat-Back Exhaust (#817523) on a 2011 GMC Sierra. I made this video because I was researching installing one of these on my truck and I couldn't find anything for a GM Truck. I saw some Mustangs, some Camaros, some Ford trucks, etc. But nobody had documented what it would be like for a GM truck. So here you go. All in all, it was pretty easy and only took a couple hours. I can't promise how close they are, but the instructions and kit were for 2007-2012 GM Trucks. So this would most likely apply to them as well, with perhaps a few deviations. Also, sorry for the fact that it's all close ups, but when your truck is on ramps and your lying underneath it you can only zoom out so far. [15 Oct 13] One more thing as a note on warranties. Here is a snippet from the Flowmaster FAQ: "There are some modifications that have the potential to void a vehicle's factory warranty, but modifying the Exhaust system after the catalytic converter is not one of them. All Flowmaster Exhaust systems are designed vehicle specific and do not violate manufacturers factory warranty. If you're having problems regarding this issue, please contact www.sema.org for more information regarding consumer's rights on performance aftermarket parts."





Gmc sierra 6.2 straight pipe vs borla XR-1
Just a before and after Exhaust video. Single straight pipe to a 15x5 borla XR-1. Part number 40086




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