i brought a vr wagon yesterday,
washed the engine bay this mronig and now when it revs hard it has a fluttery type miss in it, im not sure if the coil pack was just old or it has sucked in to much water, and i checked all plugs and leads etc, and let it dry before driving
If you do things righ people wont know you have done anything at all...
leave it in the sun for a while... and maybe leave it running for as long as you can to produce some heat through the engine bay...
I done a degrease on my VS a few weeks back, had a similar problem.
After replacing, plugs, leads, checking coils, oxygen sensors, wd40ing every electrical connection I found - it turned out to be the fuel pump. try all the cheap things first - esp wd on the elecs just incase.