Our shorty hits full boost at 3000 rpm. Our full tubey will hit full boost at 2750 and start building boost at 2000 rpm. However BEGI's maybe a little different since there intercooler setup is different then ours and alot of other factors come into play regarding turbo responsiveness
Spoolup is affected by turbo sizing, manifold design, exhaust backpressure, downpipe design, boost controller and even altitude. It's very difficult to compare one setup to another.
Yeah, just not visual if the inspector knows what they are doing. It is illeagal to remove a CAT, but I don't care! Mine is gone due to the BEGI off-road downpipe.
Not yet, but I've got a desk full of paperwork. It's unlikely that any turbo system would pass a sniffer test at full boost, by the way. It runs too rich.