Is there a difference in the pressure assist bowl 1.6gpf and 1.4gpf Kohler?

[dherzog]

I know the Flushmate system in both is the 1.6gpf. but is there a difference in the Kohler bowl? Is the same bowl used for the 1.6 as for the 1.4??
Thanks!

[Terry]

The bowl is the same.
The difference is in how the Flushmate tank is jetted.
Remove the restrictor on the 1.4 and it becomes a 1.6

[dherzog]

thank you!