Camaro missing

Took my engine to the shop to get a new cam lifters and bearings put in and now they got it all back together. Ran fine for them when they were test driving.
So i went to get it drove it home n half way home it started missing and sputtering. THey completly washed the engine and im thinking that maybe they got the optispark wet or something else wet.
It ran fine for like 10 miles then just started missing and slowly started getting worse. Could this be from gettin the opti wet or would the problems been right after the car got washed.

or what else are your ideas.

if they didnt cover your opti spark and sprayed it id say thats your problem, and if it is they would fix it!

Can the Opti spark be dried out or does it need to be replaced?

they washed my gf's engine when I brought her 97RS in the shop and it ran like garbage after.. I took it home and had to clean and dry the coils and wires and that seemed to fix it

id say you could dry it out. do you have an air compressor?

not too sure on the opti spark set up.. But I like Dry n' Go.. it removes moisture from auto electronics