water and electronics do not mix. if you wash your motor you need to cover all the major electronics. i lost an optispark in my 94 z28 by doing that, $500 mistake (back then).
-Jeff 98 GTP Black 4dr - fully loaded - short ram intake, tinted tails, hole in resonator. sold 98 camaro ss - 6spd fully loaded - cam, intake, exhaust, ford 9in rear 4.11s, 6point chromoly cage, tnt 150shot nitrous, nittos, etc.