smell of fuel in the cabin when under boost, is this potentially a problem?

[b5v6]

the reason i ask if it is a problem is i found a threat about someone having a similar problem while sitting at a traffic signal with the climate control on. the reason i didn't bump that thread is for two reasons: i don't have problems with the weather strippings in my engine bay like the others in that thread did; and the odor of fuel is only present seconds after boosting.

so my question is what can cause this? my initial thoughts are the seal between the intake manifold/head, maybe my injector seals, and maybe my fpr seals. anything additional i should look at? it may be worth mentioning i have the old style new south performance gasket. i already re-installed it 2 weeks ago, this time with a stronger, gasoline resistant gasket sealer. maybe i'm set on it being the intake manifold gasket and that's not the problem. any suggestions, tips, or methods for testing would be greatly appreciated.

[pyongwonse]

i just replaced my turbo-manifold gasket, turbo gaskets, and turbo-cat gasket and smells are gone.

test pipe is gonna do it too