what does it feel like when you have an exhaust manifold leak?

[TheSparo]

reason i ask is because my car recently started feeling like shit when driving, takes a while to spool, and runs really rough... went over IC piping and it doesn't seem to be the problem ... i have a top mount turbo setup and it is on a crappy SSAC manifold, so this is my first assumption...
so anybody know if this sounds like symptoms for an exhaust manifold leak?

[Dousan_PG]

loss of power
car makes 'farty' noise
smells funky around car when idling/driving

are somethings

[TheSparo]

so then my symptoms seem to resemble this?

[Dousan_PG]

hmm
why not pull it off and examine? holiday weekend. go get em