then water flooded the exhaust system every time the engine was shut off.

btw, it also doesn't show the water injection system, which *is*above the
water
line.

Jax, with all due respect, I owned a P30 and had the engine rebuilt. No part
of
the engine was above the waterline, except part of the throttle assembly. The
P30 spec sheet shows the A4 below the waterline as did the original P30
manual.
Furthermore, even Don Moyer mentioned this fact to me when discussing the
installation.

RB