Just so happens that I ran a FBO 16 SHO (intake, dp's, full exhaust, front mount IC, tq mounts, E30 tune, and meth) and walked him from a dig with my current mods minus the GH IC. Funny, I removed the GH IC and went back to stock. My car made more boost, and went faster on both my draggy and Livewire without a tune modification. His car was tuned by Ortiz, and mine is tuned by AJP.
His car had more mods, held more boost higher in the RPM range, and had meth......
He was making noise here in AZ all over FB, and I took him to Gapplebees with LESS.
For reference my SHO went 12.56 at 109 E30 tune only (tune and plugs) with a K&N drop in.