Exhaust flapper valve

[captras]

What is the purpose of the flapper valve? Are there any negative effects removing it or locking it open?

[MotoMedic]

Seriously? I think this is the fourth new exhaust valve topic created this week! ha

 

captras - Sorry to call you out but repeat topics are a big issue on this forum! Please check out these two topics before posting:

http://www.gm-trucks.com/forums/topic/156600-most-common-2014-topics-please-read-before-posting/

http://www.gm-trucks.com/forums/topic/157915-2014-sub-forums-please-read/

 

You can find the exhaust valve topic here:

http://www.gm-trucks.com/forums/topic/153020-exhaust-adaptive-valve/

 

Thanks!