ok heres the deal! my friends complain about driving behind me becasue they get a strong smell of gas comming from my exhaust. The car does not blow black smoke or anything so I dont know what it could be. The car does feel a little sluggish compaired to what it normally feels like at times? Should I be replacing my sparkplugs everytime I chance my oil? I also run 93 in the car at all times and I have a full exhaust. The car shoots little blue flames out of the exhaust from what im told at night when it is visible.

The car runs GREAT but I just want to address my friends complaints as I cant see anything wrong. Also how ofter do you change sparkplugs on a SR? I am running new plugs with about 4K on them so far.