Joe I guess I am talking about exhaust leak because I smell like before myToyota Supra's exhaust leak from a bad gasket. It smells like unhealthy bitter burned smell?I talk to the shop last night. They said my Catalyst is VERY rusty. I replaced two of stainless clad one-piece exhaust manifold gaskets, three other gaskets (almost same as Exhaust Manifold Service Kit). Before I replace them, there was noise when it hit 2900 rpm, but I do not hear it anymore. I will ask my technician about it is gasoline odor. So if it is a fuelodor, what should I replace? Thanks Joe for big help, and sorry for poor description. Blacnight >Blacknight, > > Are you talking exhaust leak or gasoline odor? If all >of your emissions > equipment is working properly the exhaust should emit >little odor. I believe > what you are trying to describe is a fuel odor. The >fact that all of the > exhaust components are far behind the passenger >compartment it is unlikely > that exhaust gases would enter that area. On the other >hand fuel odors are a > common De Lorean problem whenever there is a leak in >the fuel tank area.