When I installed my Vararam, I'd went out and did three 0-60 runs with factory intake, installed the Vararam then did three 0-60 runs on the Vararam. I did not unhook battery when I did swap because I know it doesn't need to be. I averaged 2-tenths faster 0-60 post Vararam.He also admins he doesn't get a tune. You can't just increase airflow by a boat load and not adjust the engine to do anything with that air.
I mean that theoretical 10hp is an entire 2% increase over stock LOL.
Not sure what you can notice a 2% change on.
I'm still going with removing your battery cable (which is part of the install of the intake) will make a bigger difference.
I did notice an improvement with my last updated tune after my Vararam intake. More of a difference then getting the tune on the stock truck with just the exhaust changed. But to be clear not really a difference the matters, just a smoothness is the engine at wot during hard shifts, not going to make my truck very much faster, but not slower.