Ideas for quicker responce (tuning question)

[Brock]

Helping a friend out with his 871 and gave him a quick original @m*m^2 job. His is a big cpl with big turbo.

He loves the power but the turbo won't spool and pull hard till about 1350rpm, so I tried closing the min table a bit on the lower end which helped a tad but it's still a bit laggy, he owns 7 trucks and all are 2250 or newer so I explained that those engine's all have quicker responce turbos and this big cpl won't have that snappy throttle responce but it'll pull hard on hills.

Either way, what would I have to do to give him a quicker spool down low? Do I need to tweek the fueling table a bit?

Thanks alot for the help guys, a little out of my league here but I'm helping a friend out as best I can like you guys once helped me! The circle continues lol.