Yeah well, it's slappy. I have a Washburn bass. It's way slappy. Best bass slappin' I can think of quick was this one of Sara Lee when she was 22. Look familiar? Years later she was the girl in the bathtub in the Love Shack video.
And that's a modified Precision she's slappin' heck out of - a distinctly non-slappy bass. I traded guitars with our Underwear Optional bassist Wendy for a while cuz she wanted slappin' practice, and I'll tell ya', her Precision wouldn't slap for s4i+. But Sara's had a Badass bridge put on this one so that oughta raise and stiffen it up some.