C

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great, better, easy, fit and stock.

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Our engine has analyzed and discovered that 69.4% of the reviews are reliable.

This product had a total of 83 reviews as of our last analysis date on Feb 22 2019.

Noticed a slight sound change and i can hear the turbo whistle a little better

This is an essential upgrade for lly engines due to poor flow of the factory turbo mouthpiece

2005 lly duramaxif you have an lly this is a must do upgrade

You dont have to do a pcv reroute but if you want to this product comes wiht aplug to put into the mouthpiece where the pcv connects