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This is a video of my 2015 Chevrolet Silverado with Kooks headers and a Bullet Performance Valved Exhaust System. This consists of an inline valve just before the muffler that is always open to flow the exhaust through the muffler and resonator. Once you actuate the vacuum pump, the valve will close and route the exhaust around the muffler and into a small chamber to quiet the exhaust down a lot.
It is not recommended to drive with the valve closed or keep it closed for very long as it is very restrictive. It is meant to keep the truck quiet just at times when needed such as next to the police or cold starts to keep the neighbors happy.
This system has the large resonator which is recommended for use with long tube headers. The standard catback either has a small resonator or no resonator at all. You can view more on their website at:
www.bulletperf.com
Or view the Silverado Exhaust here:
www.bulletperf....
Special thanks to Bu3oaf for getting me a great deal on this exhaust. Go subscribe to his channel and you can see more videos of this exhaust in action.
2015 Chevy Silverado RCSB
5.3L Ecotec3
Bullet Performance Valved Exhaust
3" from cat back to dual 4" tip behind right rear tire
Kooks 1-3/4 long tube headers
Green cat Y-Pipe
Volant CAI
Blackbear Performance Tune