Reviewed By Philip B (COLUMBIA, TN) Reviewed for a
2017GMC Sierra—6/1/2017 5:54 AM
The Magnaflow exits more to the side and the polished 6" tip looks much better than stock. Gets rid of the factory 3" diffuser and unattractive shroud.
Lower EGT keeps the PCM from reducing power on long hills pulling 15K load.