I'm interested in how this applies to the SPD turbo adapters. SPD has published what's supposed to be unbiased Dyno data showing I believe around a 40 whp gain with no tuning.
While those guys do seem pretty straightforward and to an extent I trust them, I trust folks like BK more. It seems that the data he's presented us says that the truck will not gain much from anything of the sort without tuning. Every time I mention this and post references from this site I get hammered on the 'Book. "So are you saying they're lying??"