[Unknown SSRS]

I am very disapointed atm... Got my car tuned and read 421rwhp and 368 tq. It wad on a Mainline Dyno. Before cam(NIGHT FURY CAM) 381RWHP AND 334 TQ.

SO QUESTION IS anyone familar with the mainline Dyno? Does it read that much lower?

I had the intake,headers and hi flow cats before the cam