04 GT.

Ok I just got done with the seafoam deal. Where you put it into the engine its self.. Like the dealer. Not much smoke.. Which is good and I let it set for an hr or so... Question is..

Is it normal for it to feel as if there is power loss after you're done with the decarbonizing of the engine.?

Cause I just took it for a drive, and ever so often it make a hissing sound followed by a tid bit of smoke.. Now that its not doing that anymore I'm wondering why it feels as if its running a bit rough..

And yes I did use a heavier then normal premix so to lube the system after words.