I'm not sure where anybody said anything about big increases anywhere.....in this thread, or the one posted showing the TB shootout. It's a well known fact that most of the mods on these trucks only gain a few HP here and there (except for pulley, different tune or blower porting). However, as I'm sure you are aware, it's cumulative. You seem to be putting down the mod, as if it's any more of a waste of money than so many other mods people are doing on these trucks.

If you're so concerned with the entire powerband, I'll bet the stock TB makes better power and torque from idle all the way to 3500 RPM. Is that the better way to go? I doubt it. However, if given the choice between a TB that acts more like a stocker (BBK) regarding idle characteristics and not hanging up as the Accufab (frequently) does (did a search a while back and found this to be the case), plus beats it out in a HP comparison on a truck that is already modded enough to make >450 RWHP, I believe that makes it a much better choice. Not only that, it costs less than the Accufab. I had two Accufab's, and the throttle blade in the closed position was further away from one side of the housing than the other (both Accfabs were like this), and I even tried several TPS adjustments in tandem with backing out the set screw to bring the idle down. Still idled around 850 RPM no matter what, and still hung up around 1300 RPM for a few seconds after taking your foot off the gas (no matter what).

I have been involved in racing and working on many different vehicles, including my own supercharged Mustangs, so I am not a beginner when it comes to adjusting things. So, I am convinced that I got unlucky with the two (2) Accufab pieces, or they are just inconsistent. The first BBK piece worked like a charm.

So, being a better working, higher HP an less expensive piece, that's why (for me) I felt it was a no-brainer. I know there are others on here who like their Accufabs.

 

And having no use for pointless polishing or engraved lightning bolts, I like the looks of the BBK much better also.