After installing these pipes I know I have gained something off of them. My turbos spool a little faster and knowing how smooth the bends are on the pipes with a larger diameter is a lot better on the performance. The install was pretty straight forward, after driving it I came back and made some small adjustments. Good addition to my truck.
Im mean for the price...
Its not cut very precise, its a little smaller than my throttle body, so there is a small lip (doubt thats great for air flow), i dont know that i can tell a difference, but its hard to say with out a dyno. To fix the lip i think i willput it in a vice and try and file it down some. But im kind of a perfectionist.