I just put on a super B special and I am wondering what everyone's opinion is to achieve a little better low end response. I know that this turbo is very laggy, but I have ridden in other trucks with the same turbo (24v's though) and it seems like they spool up a bit better. Any suggestions would be greatly appreciated.

 

Also, I am only able to get about 30lbs of boost out of the turbo right now and can't figure out why I can't get up to 40+lbs. I'm pretty sure I have enough fuel, but I could be wrong.

 

The 12V doesnt flow as well without an aftermarket cam, but that shouldnt matter so much off the bottom.
You may benefit from fiddling with the AFC to add more fuel in the low end.
Is the turbo gated at 30? You can pressurize the system with an air compressor and see when the gate opens up.