That's where I don't agree. Mine is a 1.32 A/R and a 96mm wheel...
With a 2600 (on motor only) stall. I could foot brake 1200rpm into the beams, grab the trans brake and floor it as soon as I staged the car. I could be to 10psi before the bottom bulb went on without an issue.
So zero boost to full boost in 1 second. I can also go from 8psi to 20psi in under a second after a I let go of the trans brake.
Just depends on what your definition of "slow" spooling is I guess. But mine is not bad at all in my opinion.
Here is a video of mine from rolling on the throttle in the car... you can hear it doesn't take long to spool up at all.
https://drive.google.com/open?id=0B-3Ko4PYG9SvUUJGYXZQTkdQa28Here is one from a roll in first that I flat foot it. (you can hear the big ol' pedal hit the floor... lol
https://drive.google.com/open?id=0B-3Ko4PYG9SvY0QxMXluaUdhUWcThat being said, after I tightened the converter so it will only go to 2200rpm on motor, it's absolutely TERRIBLE on spool up. But I blame the converter, not the turbo A/R.
Just like anything, you just need to match the components to make them work good.