Ive had my flowmaster cat back on for about 4 years and changed them the other day to a sss exhaust, what i noticed is there was alot of water in the muffler and also the baffles inside were completly gone,is it common to get water in the exhaust, say a half a cup,even when i adjusted the new exhaust i had water dripping out a little.Just wanted to know if this is normal

 

That's a definate sign of short trip driving.
Condensation is building up in the exhaust and you are not warming it up enough to push it out.

If your trip is short get it up to temperature then throttle it up.

 

yeah i dont drive it very far i might have put 3000 miles on it in the last year and a half